+/* +------------------------------------+
+ * | Inspire Internet Relay Chat Daemon |
+ * +------------------------------------+
+ *
+ * Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
+ * E-mail:
+ * <brain@chatspike.net>
+ * <Craig@chatspike.net>
+ *
+ * Written by Craig Edwards, Craig McLure, and others.
+ * This program is free but copyrighted software; see
+ * the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
#include <connection.h>
#include <unistd.h>
#include <fcntl.h>
+#include <poll.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/utsname.h>
-#include <errno.h>
#include <vector>
+#include <string>
+#include <deque>
+#include <sstream>
#include "inspircd.h"
#include "modules.h"
+#include "inspstring.h"
+#include "helperfuncs.h"
+
+using namespace std;
+
extern std::vector<Module*> modules;
extern std::vector<ircd_module*> factory;
-extern int MODCOUNT;
-
-#define STATE_CLEAR 1
-#define STATE_WAIT_FOR_ACK 2
+std::deque<std::string> xsums;
-packet::packet()
-{
- srand(time(NULL));
- id = random();
-}
+extern int MODCOUNT;
-packet::~packet()
+extern time_t TIME;
+
+
+/**
+ * The InspIRCd mesh network is maintained by a tree of objects which reference *themselves*.
+ * Every local server has an array of 32 *serverrecs, known as me[]. Each of these represents
+ * a local listening port, and is not null if the user has opened a listening port on the server.
+ * It is assumed nobody will ever want to open more than 32 listening server ports at any one
+ * time (i mean come on, why would you want more, the ircd works fine with ONE).
+ * Each me[] entry has multiple classes within it of type ircd_connector. These are stored in a vector
+ * and each represents a server linked via this socket. If the connection was created outbound,
+ * the connection is bound to the default ip address by using me[defaultRoute] (defaultRoute being
+ * a global variable which indicates the default server to make connections on). If the connection
+ * was created inbound, it is attached to the port the connection came in on. There may be as many
+ * ircd_connector objects as needed in each me[] entry. Each ircd_connector implements the specifics
+ * of an ircd connection in the mesh, however each ircd may have multiple ircd_connector connections
+ * to it, to maintain the mesh link.
+ */
+
+char* xsumtable = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
+
+// creates a random id for a line for detection of duplicate messages
+std::string CreateSum()
{
+ char sum[9];
+ sum[0] = ':';
+ sum[8] = '\0';
+ for(int q = 1; q < 8; q++)
+ sum[q] = xsumtable[rand()%52];
+ return sum;
}
connection::connection()
{
- key = GenKey();
fd = 0;
- state = STATE_CLEAR;
- buffer.clear();
}
-bool connection::CreateListener(char* host, int p)
+bool connection::CreateListener(char* newhost, int p)
{
sockaddr_in host_address;
int flags;
int on = 0;
struct linger linger = { 0 };
- fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+ this->port = p;
+
+ fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (fd <= 0)
{
return false;
}
+ setsockopt(fd,SOL_SOCKET,SO_REUSEADDR,(const char*)&on,sizeof(on));
+ linger.l_onoff = 1;
+ linger.l_linger = 1;
+ setsockopt(fd,SOL_SOCKET,SO_LINGER,(const char*)&linger,sizeof(linger));
+
+ // attempt to increase socket sendq and recvq as high as its possible
+ // to get them on linux.
+ int sendbuf = 32768;
+ int recvbuf = 32768;
+ setsockopt(fd,SOL_SOCKET,SO_SNDBUF,(const void *)&sendbuf,sizeof(sendbuf));
+ setsockopt(fd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf));
+
memset((void*)&host_address, 0, sizeof(host_address));
host_address.sin_family = AF_INET;
- if (!strcmp(host,""))
+ if (!strcmp(newhost,""))
{
host_address.sin_addr.s_addr = htonl(INADDR_ANY);
}
else
{
- inet_aton(host,&addy);
+ inet_aton(newhost,&addy);
host_address.sin_addr = addy;
}
this->port = p;
- setsockopt(fd,SOL_SOCKET,SO_REUSEADDR,(const char*)&on,sizeof(on));
- linger.l_onoff = 1;
- linger.l_linger = 0;
- setsockopt(fd,SOL_SOCKET,SO_LINGER,(const char*)&linger,sizeof(linger));
+ listen(this->fd,5);
- buffer.clear();
-
return true;
}
-bool connection::BeginLink(char* targethost, int port, char* password)
+char* ircd_connector::GetServerIP()
{
- char connect[MAXBUF];
-
- if (this->fd)
- {
- sprintf(connect,"S %s %s :%s",getservername().c_str(),password,getserverdesc().c_str());
- this->haspassed = false;
- return this->SendPacket(connect, targethost, port, 0);
- }
- return false;
+ return this->host;
}
-// targethost: in dot notation a.b.c.d
-void connection::TerminateLink(char* targethost)
+int ircd_connector::GetServerPort()
{
+ return this->port;
}
-// host: in dot notation a.b.c.d
-// port: host byte order
-bool connection::SendPacket(char *message, char* host, int port, long ourkey)
+bool ircd_connector::SetHostAndPort(char* newhost, int newport)
{
- sockaddr_in host_address;
- in_addr addy;
- packet p;
+ strncpy(this->host,newhost,160);
+ this->port = newport;
+ return true;
+}
- memset((void*)&host_address, 0, sizeof(host_address));
+bool ircd_connector::SetHostAddress(char* newhost, int newport)
+{
+ strncpy(this->host,newhost,160);
+ this->port = newport;
+ memset((void*)&addr, 0, sizeof(addr));
+ addr.sin_family = AF_INET;
+ inet_aton(host,&addr.sin_addr);
+ addr.sin_port = htons(port);
+ return true;
+}
- host_address.sin_family = AF_INET;
- inet_aton(host,&addy);
- host_address.sin_addr = addy;
+void ircd_connector::SetServerPort(int p)
+{
+ this->port = p;
+}
- host_address.sin_port = htons(port);
+void ircd_connector::AddBuffer(std::string a)
+{
+ std::string b = "";
+ for (int i = 0; i < a.length(); i++)
+ if (a[i] != '\r')
+ b = b + a[i];
+
+ std::stringstream stream(ircdbuffer);
+ stream << b;
+ log(DEBUG,"AddBuffer: %s",b.c_str());
+ ircdbuffer = stream.str();
+}
- strcpy(p.data,message);
- p.type = PT_SYN_WITH_DATA;
- p.key = ourkey;
+bool ircd_connector::BufferIsComplete()
+{
+ for (int i = 0; i < ircdbuffer.length(); i++)
+ if (ircdbuffer[i] == '\n')
+ return true;
+ return false;
+}
+void ircd_connector::ClearBuffer()
+{
+ ircdbuffer = "";
+}
- FOREACH_MOD OnPacketTransmit(p.data);
+std::string ircd_connector::GetBuffer()
+{
+ // Fix by Brain 28th Apr 2005
+ // seems my stringstream code isnt liked by linux
+ // EVEN THOUGH IT IS CORRECT! Fixed by using a different
+ // (SLOWER) algorithm...
+ char* line = (char*)ircdbuffer.c_str();
+ std::string ret = "";
+ while ((*line != '\n') && (strlen(line)))
+ {
+ ret = ret + *line;
+ line++;
+ }
+ if ((*line == '\n') || (*line == '\r'))
+ line++;
+ ircdbuffer = line;
+ return ret;
+}
- log(DEBUG,"main: Connection::SendPacket() sent '%s' to %s:%d",p.data,host,port);
+bool ircd_connector::MakeOutboundConnection(char* newhost, int newport)
+{
+ log(DEBUG,"MakeOutboundConnection: Original param: %s",newhost);
+ ClearBuffer();
+ hostent* hoste = gethostbyname(newhost);
+ if (!hoste)
+ {
+ log(DEBUG,"MakeOutboundConnection: gethostbyname was NULL, setting %s",newhost);
+ this->SetHostAddress(newhost,newport);
+ SetHostAndPort(newhost,newport);
+ }
+ else
+ {
+ struct in_addr* ia = (in_addr*)hoste->h_addr;
+ log(DEBUG,"MakeOutboundConnection: gethostbyname was valid, setting %s",inet_ntoa(*ia));
+ this->SetHostAddress(inet_ntoa(*ia),newport);
+ SetHostAndPort(inet_ntoa(*ia),newport);
+ }
- // returns false if the packet could not be sent (e.g. target host down)
- if (sendto(this->fd,&p,sizeof(p),0,(sockaddr*)&host_address,sizeof(host_address))<0)
+ this->fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+ if (this->fd >= 0)
{
- log(DEBUG,"sendto() failed for Connection::SendPacket() with a packet of size %d: %s",sizeof(p),strerror(errno));
- return false;
+ if(connect(this->fd, (sockaddr*)&this->addr,sizeof(this->addr)))
+ {
+ WriteOpers("connect() failed for %s",host);
+ RemoveServer(this->servername.c_str());
+ return false;
+ }
+ int flags = fcntl(this->fd, F_GETFL, 0);
+ fcntl(this->fd, F_SETFL, flags | O_NONBLOCK);
+ int sendbuf = 32768;
+ int recvbuf = 32768;
+ setsockopt(this->fd,SOL_SOCKET,SO_SNDBUF,(const void *)&sendbuf,sizeof(sendbuf));
+ setsockopt(this->fd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf));
+ return true;
+ }
+ else
+ {
+ WriteOpers("socket() failed!");
+ RemoveServer(this->servername.c_str());
}
- this->state = STATE_WAIT_FOR_ACK;
+ return false;
+}
- // host_address remains unchanged. we only want to receive from where we just sent the packet to.
+
+bool connection::BeginLink(char* targethost, int newport, char* password, char* servername, int myport)
+{
+ char connect[MAXBUF];
- // retry the packet up to 5 times
- for (int retries = 0; retries < 5; retries++)
+ ircd_connector connector;
+ ircd_connector *cn = this->FindHost(servername);
+
+
+ if (cn)
{
- socklen_t host_address_size;
- host_address.sin_family=AF_INET;
- host_address_size=sizeof(host_address);
+ WriteOpers("CONNECT aborted: Server %s already exists",servername);
+ return false;
+ }
+
- // wait for ack, or timeout.
- // if reached a timeout, send again.
- // the packet id in the ack must match that in the original packet
- // this MUST operate in lock/step fashion!!!
- int cycles = 0;
- packet p2;
- do
- {
- fd_set sfd;
- timeval tval;
- tval.tv_usec = 100;
- tval.tv_sec = 0;
- FD_ZERO(&sfd);
- FD_SET(fd,&sfd);
- int res = select(65535, &sfd, NULL, NULL, &tval);
- cycles++;
- }
- while ((recvfrom(fd,&p2,sizeof(p2),0,(sockaddr*)&host_address,&host_address_size)<0) && (cycles < 10));
-
- if (cycles >= 10)
+ if (this->fd)
+ {
+ if (connector.MakeOutboundConnection(targethost,newport))
{
- log(DEFAULT,"ERROR! connection::SendPacket() waited >10000 nanosecs for an ACK. Will resend up to 5 times");
+ // targethost has been turned into an ip...
+ // we dont want this as the server name.
+ connector.SetServerName(servername);
+ snprintf(connect,MAXBUF,"S %s %s %lu %lu :%s",getservername().c_str(),password,(unsigned long)myport,(unsigned long)GetRevision(),getserverdesc().c_str());
+ connector.SetState(STATE_NOAUTH_OUTBOUND);
+ connector.SetHostAndPort(targethost, newport);
+ this->connectors.push_back(connector);
+ return this->SendPacket(connect, servername);
}
else
{
- if (p2.type != PT_ACK_ONLY)
- {
- packet_buf pb;
- pb.p.id = p.id;
- pb.p.key = p.key;
- pb.p.type = p.type;
- strcpy(pb.p.data,p.data);
- strcpy(pb.host,inet_ntoa(host_address.sin_addr));
- pb.port = ntohs(host_address.sin_port);
- this->buffer.push_back(pb);
-
- log(DEFAULT,"ERROR! connection::SendPacket() received a data response and was expecting an ACK!!!");
- this->state = STATE_CLEAR;
- return true;
- }
-
- if (p2.id != p.id)
- {
- log(DEFAULT,"ERROR! connection::SendPacket() received an ack for a packet it didnt send!");
- this->state = STATE_CLEAR;
- return false;
- }
- else
- {
- log(DEFAULT,"Successfully received ACK");
- this->state = STATE_CLEAR;
- return true;
- break;
- }
+ connector.SetState(STATE_DISCONNECTED);
+ WriteOpers("Could not create outbound connection to %s:%d",targethost,newport);
}
}
- log(DEFAULT,"We never received an ack. Something fishy going on, host is dead.");
- this->state = STATE_CLEAR;
return false;
+}
+void ircd_connector::SetVersionString(std::string newversion)
+{
+ log(DEBUG,"Set version of %s to %s",this->servername.c_str(),newversion.c_str());
+ this->version = newversion;
}
-bool connection::SendSYN(char* host, int port)
+std::string ircd_connector::GetVersionString()
{
- sockaddr_in host_address;
- in_addr addy;
- packet p;
+ return this->version;
+}
- memset((void*)&host_address, 0, sizeof(host_address));
+bool connection::MeshCookie(char* targethost, int newport, unsigned long cookie, char* servername)
+{
+ char connect[MAXBUF];
+
+ ircd_connector connector;
+
+ WriteOpers("Establishing meshed link to %s:%d",servername,newport);
- host_address.sin_family = AF_INET;
- inet_aton(host,&addy);
- host_address.sin_addr = addy;
+ if (this->fd)
+ {
+ if (connector.MakeOutboundConnection(targethost,newport))
+ {
+ // targethost has been turned into an ip...
+ // we dont want this as the server name.
+ connector.SetServerName(servername);
+ snprintf(connect,MAXBUF,"- %lu %s :%s",cookie,getservername().c_str(),getserverdesc().c_str());
+ connector.SetState(STATE_NOAUTH_OUTBOUND);
+ connector.SetHostAndPort(targethost, newport);
+ connector.SetState(STATE_CONNECTED);
+ this->connectors.push_back(connector);
+ return this->SendPacket(connect, servername);
+ }
+ else
+ {
+ connector.SetState(STATE_DISCONNECTED);
+ WriteOpers("Could not create outbound connection to %s:%d",targethost,newport);
+ }
+ }
+ return false;
+}
- host_address.sin_port = htons(port);
+bool connection::AddIncoming(int newfd, char* targethost, int sourceport)
+{
+ ircd_connector connector;
+
+ // targethost has been turned into an ip...
+ // we dont want this as the server name.
+ connector.SetServerName(targethost);
+ connector.SetDescriptor(newfd);
+ connector.SetState(STATE_NOAUTH_INBOUND);
+ int flags = fcntl(newfd, F_GETFL, 0);
+ fcntl(newfd, F_SETFL, flags | O_NONBLOCK);
+ int sendbuf = 32768;
+ int recvbuf = 32768;
+ setsockopt(newfd,SOL_SOCKET,SO_SNDBUF,(const void *)&sendbuf,sizeof(sendbuf));
+ setsockopt(newfd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf));
+ connector.SetHostAndPort(targethost, sourceport);
+ connector.SetState(STATE_NOAUTH_INBOUND);
+ log(DEBUG,"connection::AddIncoming() Added connection: %s:%d",targethost,sourceport);
+ this->connectors.push_back(connector);
+ return true;
+}
- p.type = PT_SYN_ONLY;
- p.key = key;
- strcpy(p.data,"");
+void connection::TerminateLink(char* targethost)
+{
+ // this locates the targethost in the connection::connectors vector of the class,
+ // and terminates it by sending it an SQUIT token and closing its descriptor.
+ // TerminateLink with a null string causes a terminate of ALL links
+}
- if (sendto(fd,&p,sizeof(p),0,(sockaddr*)&host_address,sizeof(host_address))<0)
+
+// Returns a pointer to the connector for 'host'
+ircd_connector* connection::FindHost(std::string findhost)
+{
+ for (int i = 0; i < this->connectors.size(); i++)
{
- return false;
+ if (this->connectors[i].GetServerName() == findhost)
+ {
+ return &this->connectors[i];
+ }
}
- return true;
+ return NULL;
+}
+std::string ircd_connector::GetServerName()
+{
+ return this->servername;
}
-bool connection::SendACK(char* host, int port, int reply_id)
+std::string ircd_connector::GetDescription()
{
- sockaddr_in host_address;
- in_addr addy;
- packet p;
+ return this->description;
+}
- memset((void*)&host_address, 0, sizeof(host_address));
+void ircd_connector::SetServerName(std::string serv)
+{
+ this->servername = serv;
+}
- host_address.sin_family = AF_INET;
- inet_aton(host,&addy);
- host_address.sin_addr = addy;
+void ircd_connector::SetDescription(std::string desc)
+{
+ this->description = desc;
+}
- host_address.sin_port = htons(port);
- p.type = PT_ACK_ONLY;
- p.key = key;
- p.id = reply_id;
- strcpy(p.data,"");
+int ircd_connector::GetDescriptor()
+{
+ return this->fd;
+}
- if (sendto(fd,&p,sizeof(p),0,(sockaddr*)&host_address,sizeof(host_address))<0)
+int ircd_connector::GetState()
+{
+ return this->state;
+}
+
+
+void ircd_connector::SetState(int newstate)
+{
+ this->state = newstate;
+ if (state == STATE_DISCONNECTED)
{
- return false;
+ NetSendMyRoutingTable();
}
-
}
+void ircd_connector::CloseConnection()
+{
+ int flags = fcntl(this->fd, F_GETFL, 0);
+ fcntl(this->fd, F_SETFL, flags ^ O_NONBLOCK);
+ close(this->fd);
+ flags = fcntl(this->fd, F_GETFL, 0);
+ fcntl(this->fd, F_SETFL, flags | O_NONBLOCK);
+}
-// Generates a server key. This is pseudo-random.
-// the server always uses the same server-key in all communications
-// across the network. All other servers must remember the server key
-// of servers in the network, e.g.:
-//
-// ServerA: key=5555555555
-// ServerB: key=6666666666
-// I am ServerC: key=77777777777
-//
-// If ServerC sees a packet from ServerA, and the key stored for ServerA
-// is 0, then cache the key as the servers key.
-// after this point, any packet from ServerA which does not contain its key,
-// 555555555, will be silently dropped.
-// This should prevent blind spoofing, as to fake a server you must know its
-// assigned key, and to do that you must receive messages that are origintated
-// from it or hack the running executable.
-//
-// During the AUTH phase (when server passwords are checked, the key in any
-// packet MUST be 0). Only the initial SERVER/PASS packets may have a key
-// of 0 (and any ACK responses to them).
-//
-
-long connection::GenKey()
+void ircd_connector::SetDescriptor(int newfd)
{
- srand(time(NULL));
- return (random()*time(NULL));
+ this->fd = newfd;
}
-// host: in dot notation a.b.c.d
-// port: host byte order
-bool connection::RecvPacket(char *message, char* host, int &prt, long &theirkey)
+bool connection::SendPacket(char *message, const char* sendhost)
{
- // returns false if no packet waiting for receive, e.g. EAGAIN or ECONNRESET
- sockaddr_in host_address;
- socklen_t host_address_size;
- packet p;
-
- memset((void*)&host_address, 0, sizeof(host_address));
+ if ((!message) || (!sendhost))
+ return true;
- host_address.sin_family=AF_INET;
- host_address_size=sizeof(host_address);
+ ircd_connector* cn = this->FindHost(sendhost);
+
+ if (!strchr(message,'\n'))
+ {
+ strlcat(message,"\n",MAXBUF);
+ }
- //int recvfrom(int s, void *buf, size_t len, int flags, struct sockaddr *from, socklen_t *fromlen);
- if (recvfrom(fd,&p,sizeof(p),0,(sockaddr*)&host_address,&host_address_size)<0)
+ if (cn)
{
- if (buffer.size()>0)
+ log(DEBUG,"main: Connection::SendPacket() sent '%s' to %s",message,cn->GetServerName().c_str());
+
+ if (cn->GetState() == STATE_DISCONNECTED)
{
- log(DEBUG,"Fetching a buffered packet size %d",buffer.size());
- strcpy(message,buffer[0].p.data);
- theirkey = buffer[0].p.key;
- strcpy(host,buffer[0].host);
- prt = buffer[0].port;
-
- buffer.erase(buffer.begin());
-
- return true;
+ log(DEBUG,"\n\n\n\nMain route to %s is down, seeking alternative\n\n\n\n",sendhost);
+ // fix: can only route one hop to avoid a loop
+ if (strncmp(message,"R ",2))
+ {
+ log(DEBUG,"Not a double reroute");
+ // this route is down, we must re-route the packet through an available point in the mesh.
+ for (int k = 0; k < this->connectors.size(); k++)
+ {
+ log(DEBUG,"Check connector %d: %s",k,this->connectors[k].GetServerName().c_str());
+ // search for another point in the mesh which can 'reach' where we want to go
+ for (int m = 0; m < this->connectors[k].routes.size(); m++)
+ {
+ log(DEBUG,"Check connector %d: %s route %s",k,this->connectors[k].GetServerName().c_str(),this->connectors[k].routes[m].c_str());
+ if (!strcasecmp(this->connectors[k].routes[m].c_str(),sendhost))
+ {
+ log(DEBUG,"Found alternative route for packet: %s",this->connectors[k].GetServerName().c_str());
+ char buffer[MAXBUF];
+ snprintf(buffer,MAXBUF,"R %s %s",sendhost,message);
+ this->SendPacket(buffer,this->connectors[k].GetServerName().c_str());
+ return true;
+ }
+ }
+ }
+ }
+ char buffer[MAXBUF];
+ snprintf(buffer,MAXBUF,"& %s",sendhost);
+ NetSendToAllExcept(sendhost,buffer);
+ log(DEBUG,"\n\nThere are no routes to %s, we're gonna boot the server off!\n\n",sendhost);
+ DoSplit(sendhost);
+ return false;
}
- return false;
- }
- log(DEBUG,"connection::RecvPacket(): received packet type %d '%s' from '%s'",p.type,p.data,inet_ntoa(host_address.sin_addr));
+ // returns false if the packet could not be sent (e.g. target host down)
+ if (send(cn->GetDescriptor(),message,strlen(message),0)<0)
+ {
+ log(DEBUG,"send() failed for Connection::SendPacket(): %s",strerror(errno));
+ log(DEBUG,"Disabling connector: %s",cn->GetServerName().c_str());
+ cn->CloseConnection();
+ cn->SetState(STATE_DISCONNECTED);
+ // retry the packet along a new route so either arrival OR failure are gauranteed (bugfix)
+ return this->SendPacket(message,sendhost);
+ }
+ return true;
+ }
+}
- if (p.type == PT_SYN_ONLY)
+bool already_have_sum(std::string sum)
+{
+ for (int i = 0; i < xsums.size(); i++)
{
- strcpy(message,p.data);
- strcpy(host,inet_ntoa(host_address.sin_addr));
- prt = ntohs(host_address.sin_port);
- SendACK(host,this->port,p.id);
- return false;
+ if (xsums[i] == sum)
+ {
+ return true;
+ }
}
-
- if (p.type == PT_ACK_ONLY)
+ if (xsums.size() >= 128)
{
- strcpy(message,p.data);
- strcpy(host,inet_ntoa(host_address.sin_addr));
- prt = ntohs(host_address.sin_port);
- this->state = STATE_CLEAR;
- return false;
+ xsums.pop_front();
}
+ xsums.push_back(sum);
+ return false;
+}
- if (p.type == PT_SYN_WITH_DATA)
- {
- strcpy(message,p.data);
- strcpy(host,inet_ntoa(host_address.sin_addr));
- theirkey = p.key;
- prt = ntohs(host_address.sin_port); // the port we received it on
- SendACK(host,prt,p.id);
+// receives a packet from any where there is data waiting, first come, first served
+// fills the message and host values with the host where the data came from.
- if (buffer.size()>0)
+bool connection::RecvPacket(std::deque<std::string> &messages, char* recvhost,std::deque<std::string> &sums)
+{
+ char data[65536];
+ memset(data, 0, 65536);
+ for (int i = 0; i < this->connectors.size(); i++)
+ {
+ if (this->connectors[i].GetState() != STATE_DISCONNECTED)
{
- log(DEBUG,"Fetching a buffered packet size %d",buffer.size());
- packet_buf pb;
- pb.p.id = p.id;
- pb.p.key = p.key;
- pb.p.type = p.type;
- strcpy(pb.p.data,p.data);
- strcpy(pb.host,inet_ntoa(host_address.sin_addr));
- pb.port = ntohs(host_address.sin_port);
- this->buffer.push_back(pb);
-
- strcpy(message,buffer[0].p.data);
- theirkey = buffer[0].p.key;
- strcpy(host,buffer[0].host);
- prt = buffer[0].port;
-
- buffer.erase(buffer.begin());
+ // returns false if the packet could not be sent (e.g. target host down)
+ int rcvsize = 0;
+
+ // check if theres any data on this socket
+ // if not, continue onwards to the next.
+ pollfd polls;
+ polls.fd = this->connectors[i].GetDescriptor();
+ polls.events = POLLIN;
+ int ret = poll(&polls,1,1);
+ if (ret <= 0) continue;
+
+ rcvsize = recv(this->connectors[i].GetDescriptor(),data,65000,0);
+ data[rcvsize] = '\0';
+ if (rcvsize == -1)
+ {
+ if (errno != EAGAIN)
+ {
+ log(DEBUG,"recv() failed for Connection::RecvPacket(): %s",strerror(errno));
+ log(DEBUG,"Disabling connector: %s",this->connectors[i].GetServerName().c_str());
+ this->connectors[i].CloseConnection();
+ this->connectors[i].SetState(STATE_DISCONNECTED);
+ }
+ }
+ int pushed = 0;
+ if (rcvsize > 0)
+ {
+ this->connectors[i].AddBuffer(data);
+ if (this->connectors[i].BufferIsComplete())
+ {
+ while (this->connectors[i].BufferIsComplete())
+ {
+ std::string text = this->connectors[i].GetBuffer();
+ if (text != "")
+ {
+ if ((text[0] == ':') && (text.find(" ") != std::string::npos))
+ {
+ std::string orig = text;
+ log(DEBUG,"Original: %s",text.c_str());
+ std::string sum = text.substr(1,text.find(" ")-1);
+ text = text.substr(text.find(" ")+1,text.length());
+ std::string possible_token = text.substr(1,text.find(" ")-1);
+ if (possible_token.length() > 1)
+ {
+ sums.push_back("*");
+ text = orig;
+ log(DEBUG,"Non-mesh, non-tokenized string passed up the chain");
+ }
+ else
+ {
+ log(DEBUG,"Packet sum: '%s'",sum.c_str());
+ if ((already_have_sum(sum)) && (sum != "*"))
+ {
+ // we don't accept dupes
+ log(DEBUG,"Duplicate packet sum %s from server %s dropped",sum.c_str(),this->connectors[i].GetServerName().c_str());
+ continue;
+ }
+ sums.push_back(sum.c_str());
+ }
+ }
+ else sums.push_back("*");
+ messages.push_back(text.c_str());
+ strlcpy(recvhost,this->connectors[i].GetServerName().c_str(),160);
+ log(DEBUG,"Connection::RecvPacket() %d:%s->%s",pushed++,recvhost,text.c_str());
+ }
+ }
+ return true;
+ }
+ }
}
-
- return true;
}
-
- log(DEBUG,"connection::RecvPacket(): Invalid packet type %d (protocol error)",p.type);
- return true;
+ // nothing new yet -- message and host will be undefined
+ return false;
}
projects / user / henk / code / inspircd.git / blobdiff