* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
- * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
- * E-mail:
- * <brain@chatspike.net>
- * <Craig@chatspike.net>
- *
- * Written by Craig Edwards, Craig McLure, and others.
+ * InspIRCd: (C) 2002-2009 InspIRCd Development Team
+ * See: http://wiki.inspircd.org/Credits
+ *
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
-using namespace std;
+/* $Core */
-#include "inspircd_config.h"
-#include <sys/time.h>
-#include <sys/resource.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <string>
-#include <unistd.h>
-#include <fcntl.h>
-#include <poll.h>
-#include <sstream>
-#include <iostream>
-#include <fstream>
-#include <stdexcept>
-#include "socket.h"
#include "inspircd.h"
-#include "inspircd_io.h"
-#include "inspstring.h"
-#include "helperfuncs.h"
+#include "socket.h"
#include "socketengine.h"
+using irc::sockets::sockaddrs;
+/** This will bind a socket to a port. It works for UDP/TCP.
+ * It can only bind to IP addresses, if you wish to bind to hostnames
+ * you should first resolve them using class 'Resolver'.
+ */
+bool InspIRCd::BindSocket(int sockfd, int port, const char* addr, bool dolisten)
+{
+ sockaddrs servaddr;
+ int ret;
-extern InspIRCd* ServerInstance;
-extern ServerConfig* Config;
-extern time_t TIME;
-
-InspSocket* socket_ref[MAX_DESCRIPTORS];
+ if (*addr == '*' || *addr == '\0')
+ addr = NULL;
-InspSocket::InspSocket()
-{
- this->state = I_DISCONNECTED;
- this->fd = -1;
- this->ClosePending = false;
-}
+ if (port == -1 && !addr)
+ {
+ /* Port -1: Means UDP IPV4 port binding - Special case
+ * used by DNS engine.
+ */
+ memset(&servaddr, 0, sizeof(servaddr));
+ servaddr.in4.sin_family = AF_INET;
+ }
+ else if (!irc::sockets::aptosa(addr, port, &servaddr))
+ return false;
-InspSocket::InspSocket(int newfd, char* ip)
-{
- this->fd = newfd;
- this->state = I_CONNECTED;
- this->IP = ip;
- this->ClosePending = false;
- ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
- socket_ref[this->fd] = this;
-}
+ ret = SE->Bind(sockfd, &servaddr.sa, sa_size(servaddr));
-InspSocket::InspSocket(const std::string &ahost, int aport, bool listening, unsigned long maxtime) : fd(-1), host(ahost)
-{
- this->ClosePending = false;
- this->outbuffer.clear();
- if (listening) {
- if ((this->fd = OpenTCPSocket()) == ERROR)
- {
- this->fd = -1;
- this->state = I_ERROR;
- this->OnError(I_ERR_SOCKET);
- log(DEBUG,"OpenTCPSocket() error");
- return;
- }
- else
+ if (ret < 0)
+ {
+ return false;
+ }
+ else
+ {
+ if (dolisten)
{
- if (BindSocket(this->fd,this->client,this->server,aport,(char*)ahost.c_str()) == ERROR)
+ if (SE->Listen(sockfd, Config->MaxConn) == -1)
{
- this->Close();
- this->fd = -1;
- this->state = I_ERROR;
- this->OnError(I_ERR_BIND);
- log(DEBUG,"BindSocket() error %s",strerror(errno));
- return;
+ this->Logs->Log("SOCKET",DEFAULT,"ERROR in listen(): %s",strerror(errno));
+ return false;
}
else
{
- this->state = I_LISTENING;
- ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
- socket_ref[this->fd] = this;
- log(DEBUG,"New socket now in I_LISTENING state");
- return;
+ this->Logs->Log("SOCKET",DEBUG,"New socket binding for %d with listen: %s:%d", sockfd, addr, port);
+ SE->NonBlocking(sockfd);
+ return true;
}
- }
- }
- else
- {
- this->host = ahost;
- this->port = aport;
-
- if (!inet_aton(host.c_str(),&addy))
- {
- log(DEBUG,"Attempting to resolve %s",this->host.c_str());
- /* Its not an ip, spawn the resolver */
- this->dns.SetNS(std::string(Config->DNSServer));
- this->dns.ForwardLookupWithFD(host,fd);
- timeout_end = time(NULL) + maxtime;
- timeout = false;
- this->state = I_RESOLVING;
- socket_ref[this->fd] = this;
- }
- else
- {
- log(DEBUG,"No need to resolve %s",this->host.c_str());
- this->IP = host;
- timeout_end = time(NULL) + maxtime;
- this->DoConnect();
- }
- }
-}
-
-void InspSocket::SetQueues(int nfd)
-{
- // attempt to increase socket sendq and recvq as high as its possible
- int sendbuf = 32768;
- int recvbuf = 32768;
- setsockopt(nfd,SOL_SOCKET,SO_SNDBUF,(const void *)&sendbuf,sizeof(sendbuf));
- setsockopt(nfd,SOL_SOCKET,SO_RCVBUF,(const void *)&recvbuf,sizeof(sendbuf));
-}
-
-bool InspSocket::DoResolve()
-{
- log(DEBUG,"In DoResolve(), trying to resolve IP");
- if (this->dns.HasResult())
- {
- log(DEBUG,"Socket has result");
- std::string res_ip = dns.GetResultIP();
- if (res_ip != "")
- {
- log(DEBUG,"Socket result set to %s",res_ip.c_str());
- this->IP = res_ip;
- socket_ref[this->fd] = NULL;
}
else
{
- log(DEBUG,"Socket DNS failure");
- this->Close();
- this->state = I_ERROR;
- this->OnError(I_ERR_RESOLVE);
- this->fd = -1;
- return false;
- }
- return this->DoConnect();
- }
- log(DEBUG,"No result for socket yet!");
- return true;
-}
-
-bool InspSocket::DoConnect()
-{
- log(DEBUG,"In DoConnect()");
- if ((this->fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
- {
- log(DEBUG,"Cant socket()");
- this->state = I_ERROR;
- this->OnError(I_ERR_SOCKET);
- this->fd = -1;
- return false;
- }
-
- log(DEBUG,"Part 2 DoConnect() %s",this->IP.c_str());
- inet_aton(this->IP.c_str(),&addy);
- addr.sin_family = AF_INET;
- addr.sin_addr = addy;
- addr.sin_port = htons(this->port);
-
- int flags;
- flags = fcntl(this->fd, F_GETFL, 0);
- fcntl(this->fd, F_SETFL, flags | O_NONBLOCK);
-
- if (connect(this->fd, (sockaddr*)&this->addr,sizeof(this->addr)) == -1)
- {
- if (errno != EINPROGRESS)
- {
- log(DEBUG,"Error connect() %d: %s",this->fd,strerror(errno));
- this->OnError(I_ERR_CONNECT);
- this->state = I_ERROR;
- this->Close();
- this->fd = -1;
- return false;
+ this->Logs->Log("SOCKET",DEBUG,"New socket binding for %d without listen: %s:%d", sockfd, addr, port);
+ return true;
}
}
- this->state = I_CONNECTING;
- ServerInstance->SE->AddFd(this->fd,false,X_ESTAB_MODULE);
- socket_ref[this->fd] = this;
- this->SetQueues(this->fd);
- log(DEBUG,"Returning true from InspSocket::DoConnect");
- return true;
}
-
-void InspSocket::Close()
+// Open a TCP Socket
+int irc::sockets::OpenTCPSocket(const char* addr, int socktype)
{
- if (this->fd != -1)
+ int sockfd;
+ int on = 1;
+ addr = addr;
+ struct linger linger = { 0, 0 };
+ if (!*addr)
{
- this->OnClose();
- shutdown(this->fd,2);
- close(this->fd);
- socket_ref[this->fd] = NULL;
- this->fd = -1;
+#ifdef IPV6
+ sockfd = socket (PF_INET6, socktype, 0);
+ if (sockfd < 0)
+#endif
+ sockfd = socket (PF_INET, socktype, 0);
}
-}
-
-std::string InspSocket::GetIP()
-{
- return this->IP;
-}
+ else if (strchr(addr,':'))
+ sockfd = socket (PF_INET6, socktype, 0);
+ else
+ sockfd = socket (PF_INET, socktype, 0);
-char* InspSocket::Read()
-{
- if ((fd < 0) || (fd > MAX_DESCRIPTORS))
- return NULL;
- int n = recv(this->fd,this->ibuf,sizeof(this->ibuf),0);
- if ((n > 0) && (n <= (int)sizeof(this->ibuf)))
+ if (sockfd < 0)
{
- ibuf[n] = 0;
- return ibuf;
+ return ERROR;
}
else
{
- if (errno == EAGAIN)
- {
- return "";
- }
- else
- {
- log(DEBUG,"EOF or error on socket: %s",strerror(errno));
- return NULL;
- }
+ setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+ /* This is BSD compatible, setting l_onoff to 0 is *NOT* http://web.irc.org/mla/ircd-dev/msg02259.html */
+ linger.l_onoff = 1;
+ linger.l_linger = 1;
+ setsockopt(sockfd, SOL_SOCKET, SO_LINGER, &linger, sizeof(linger));
+ return (sockfd);
}
}
-void InspSocket::MarkAsClosed()
+// XXX: it would be VERY nice to genericize this so all listen stuff (server/client) could use the one function. -- w00t
+int InspIRCd::BindPorts(FailedPortList &failed_ports)
{
- log(DEBUG,"Marked as closed");
- this->ClosePending = true;
-}
+ char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF], Desc[MAXBUF];
+ int bound = 0;
+ std::vector<ListenSocketBase*> old_ports(ports.begin(), ports.end());
-// There are two possible outcomes to this function.
-// It will either write all of the data, or an undefined amount.
-// If an undefined amount is written the connection has failed
-// and should be aborted.
-int InspSocket::Write(const std::string &data)
-{
- if (this->ClosePending)
- return false;
- /* Try and append the data to the back of the queue, and send it on its way
- */
- outbuffer.push_back(data);
- return (!this->FlushWriteBuffer());
-}
+ for (int count = 0; count < Config->ConfValueEnum("bind"); count++)
+ {
+ Config->ConfValue("bind", "port", count, configToken, MAXBUF);
+ Config->ConfValue("bind", "address", count, Addr, MAXBUF);
+ Config->ConfValue("bind", "type", count, Type, MAXBUF);
+ Config->ConfValue("bind", "ssl", count, Desc, MAXBUF);
-bool InspSocket::FlushWriteBuffer()
-{
- if (this->ClosePending)
- return true;
+ if (strncmp(Addr, "::ffff:", 7) == 0)
+ this->Logs->Log("SOCKET",DEFAULT, "Using 4in6 (::ffff:) isn't recommended. You should bind IPv4 addresses directly instead.");
- if ((this->fd > -1) && (this->state == I_CONNECTED))
- {
- if (outbuffer.size())
+ if ((!*Type) || (!strcmp(Type,"clients")))
{
- log(DEBUG,"Writing %d to socket",outbuffer.size())
- int result = write(this->fd,outbuffer[0].c_str(),outbuffer[0].length());
- if (result > 0)
+ irc::portparser portrange(configToken, false);
+ int portno = -1;
+ while (0 != (portno = portrange.GetToken()))
{
- log(DEBUG,"Wrote %d to socket",result);
- if ((unsigned int)result == outbuffer[0].length())
+ if (*Addr == '*')
+ *Addr = 0;
+
+ irc::sockets::sockaddrs bindspec;
+ irc::sockets::aptosa(Addr, portno, &bindspec);
+ std::string bind_readable = irc::sockets::satouser(&bindspec);
+
+ bool skip = false;
+ for (std::vector<ListenSocketBase *>::iterator n = old_ports.begin(); n != old_ports.end(); ++n)
{
- /* The whole block was written (usually a line)
- * Pop the block off the front of the queue
- */
- log(DEBUG,"Popping front item, now %d items left",outbuffer.size());
- outbuffer.pop_front();
+ if ((*n)->GetBindDesc() == bind_readable)
+ {
+ skip = true;
+ old_ports.erase(n);
+ break;
+ }
}
- else
+ if (!skip)
{
- log(DEBUG,"Cutting front item");
- std::string temp = outbuffer[0].substr(result);
- outbuffer[0] = temp;
- log(DEBUG,"Front item is now: ",outbuffer[0].c_str());
+ ClientListenSocket *ll = new ClientListenSocket(this, portno, Addr);
+ if (ll->GetFd() > -1)
+ {
+ bound++;
+ ll->SetDescription(*Desc ? Desc : "plaintext");
+ ports.push_back(ll);
+ }
+ else
+ {
+ failed_ports.push_back(std::make_pair(bind_readable, strerror(errno)));
+ }
}
}
- else if ((result == -1) && (errno != EAGAIN))
- {
- log(DEBUG,"Write error on socket: %s",strerror(errno));
- this->OnError(I_ERR_WRITE);
- this->state = I_ERROR;
- return true;
- }
}
}
- return false;
+
+ std::vector<ListenSocketBase *>::iterator n = ports.begin();
+ for (std::vector<ListenSocketBase *>::iterator o = old_ports.begin(); o != old_ports.end(); ++o)
+ {
+ while (n != ports.end() && *n != *o)
+ n++;
+ if (n == ports.end())
+ {
+ this->Logs->Log("SOCKET",ERROR,"Port bindings slipped out of vector, aborting close!");
+ break;
+ }
+
+ this->Logs->Log("SOCKET",DEFAULT, "Port binding %s was removed from the config file, closing.",
+ (*n)->GetBindDesc().c_str());
+ delete *n;
+
+ // this keeps the iterator valid, pointing to the next element
+ n = ports.erase(n);
+ }
+
+ return bound;
}
-bool InspSocket::Timeout(time_t current)
+bool irc::sockets::aptosa(const char* addr, int port, irc::sockets::sockaddrs* sa)
{
- if (!socket_ref[this->fd] || !ServerInstance->SE->HasFd(this->fd))
+ memset(sa, 0, sizeof(*sa));
+ if (!addr || !*addr)
{
- log(DEBUG,"No FD or socket ref");
- return false;
+#ifdef IPV6
+ sa->in6.sin6_family = AF_INET6;
+ sa->in6.sin6_port = htons(port);
+#else
+ sa->in4.sin_family = AF_INET;
+ sa->in4.sin_port = htons(port);
+#endif
+ return true;
}
-
- if (this->ClosePending)
+ else if (inet_pton(AF_INET, addr, &sa->in4.sin_addr) > 0)
{
- log(DEBUG,"Close is pending");
+ sa->in4.sin_family = AF_INET;
+ sa->in4.sin_port = htons(port);
return true;
}
-
- if (((this->state == I_RESOLVING) || (this->state == I_CONNECTING)) && (current > timeout_end))
+ else if (inet_pton(AF_INET6, addr, &sa->in6.sin6_addr) > 0)
{
- log(DEBUG,"Timed out, current=%lu timeout_end=%lu");
- // for non-listening sockets, the timeout can occur
- // which causes termination of the connection after
- // the given number of seconds without a successful
- // connection.
- this->OnTimeout();
- this->OnError(I_ERR_TIMEOUT);
- timeout = true;
- this->state = I_ERROR;
+ sa->in6.sin6_family = AF_INET6;
+ sa->in6.sin6_port = htons(port);
return true;
}
- return this->FlushWriteBuffer();
+ return false;
}
-bool InspSocket::Poll()
-{
- if (!socket_ref[this->fd] || !ServerInstance->SE->HasFd(this->fd))
- return false;
-
- int incoming = -1;
- bool n = true;
-
- if ((fd < 0) || (fd > MAX_DESCRIPTORS) || (this->ClosePending))
- return false;
-
- switch (this->state)
+bool irc::sockets::satoap(const irc::sockets::sockaddrs* sa, std::string& addr, int &port) {
+ char addrv[INET6_ADDRSTRLEN+1];
+ if (sa->sa.sa_family == AF_INET)
{
- case I_RESOLVING:
- log(DEBUG,"State = I_RESOLVING, calling DoResolve()");
- return this->DoResolve();
- break;
- case I_CONNECTING:
- log(DEBUG,"State = I_CONNECTING");
- this->SetState(I_CONNECTED);
- /* Our socket was in write-state, so delete it and re-add it
- * in read-state.
- */
- ServerInstance->SE->DelFd(this->fd);
- ServerInstance->SE->AddFd(this->fd,true,X_ESTAB_MODULE);
- return this->OnConnected();
- break;
- case I_LISTENING:
- length = sizeof (client);
- incoming = accept (this->fd, (sockaddr*)&client,&length);
- this->SetQueues(incoming);
- this->OnIncomingConnection(incoming,inet_ntoa(client.sin_addr));
- return true;
- break;
- case I_CONNECTED:
- n = this->OnDataReady();
- /* Flush any pending, but not till after theyre done with the event
- * so there are less write calls involved.
- * Both FlushWriteBuffer AND the return result of OnDataReady must
- * return true for this to be ok.
- */
- return (n && !this->FlushWriteBuffer());
- break;
- default:
- break;
+ if (!inet_ntop(AF_INET, &sa->in4.sin_addr, addrv, sizeof(addrv)))
+ return false;
+ addr = addrv;
+ port = ntohs(sa->in4.sin_port);
+ return true;
}
- return true;
-}
-
-void InspSocket::SetState(InspSocketState s)
-{
- log(DEBUG,"Socket state change");
- this->state = s;
+ else if (sa->sa.sa_family == AF_INET6)
+ {
+ if (!inet_ntop(AF_INET6, &sa->in6.sin6_addr, addrv, sizeof(addrv)))
+ return false;
+ addr = addrv;
+ port = ntohs(sa->in6.sin6_port);
+ return true;
+ }
+ return false;
}
-InspSocketState InspSocket::GetState()
-{
- return this->state;
-}
+static const char all_zero[16] = {0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0 };
-int InspSocket::GetFd()
-{
- return this->fd;
+std::string irc::sockets::satouser(const irc::sockets::sockaddrs* sa) {
+ char buffer[MAXBUF];
+ if (sa->sa.sa_family == AF_INET)
+ {
+ if (sa->in4.sin_addr.s_addr == 0)
+ {
+ sprintf(buffer, "*:%u", ntohs(sa->in4.sin_port));
+ }
+ else
+ {
+ const uint8_t* bits = reinterpret_cast<const uint8_t*>(&sa->in4.sin_addr);
+ sprintf(buffer, "%d.%d.%d.%d:%u", bits[0], bits[1], bits[2], bits[3], ntohs(sa->in4.sin_port));
+ }
+ }
+ else if (sa->sa.sa_family == AF_INET6)
+ {
+ if (!memcmp(all_zero, &sa->in6.sin6_addr, 16))
+ {
+ sprintf(buffer, "*:%u", ntohs(sa->in6.sin6_port));
+ }
+ else
+ {
+ buffer[0] = '[';
+ if (!inet_ntop(AF_INET6, &sa->in6.sin6_addr, buffer+1, MAXBUF - 10))
+ return "<unknown>"; // should never happen, buffer is large enough
+ int len = strlen(buffer);
+ // no need for snprintf, buffer has at least 9 chars left, max short len = 5
+ sprintf(buffer + len, "]:%u", ntohs(sa->in6.sin6_port));
+ }
+ }
+ else
+ return "<unknown>";
+ return std::string(buffer);
}
-bool InspSocket::OnConnected() { return true; }
-void InspSocket::OnError(InspSocketError e) { return; }
-int InspSocket::OnDisconnect() { return 0; }
-int InspSocket::OnIncomingConnection(int newfd, char* ip) { return 0; }
-bool InspSocket::OnDataReady() { return true; }
-void InspSocket::OnTimeout() { return; }
-void InspSocket::OnClose() { return; }
-
-InspSocket::~InspSocket()
+int irc::sockets::sa_size(irc::sockets::sockaddrs& sa)
{
- this->Close();
+ if (sa.sa.sa_family == AF_INET)
+ return sizeof(sa.in4);
+ if (sa.sa.sa_family == AF_INET6)
+ return sizeof(sa.in6);
+ return 0;
}
projects / user / henk / code / inspircd.git / blobdiff