2 * ngIRCd -- The Next Generation IRC Daemon
3 * Copyright (c)2001-2014 Alexander Barton (alex@barton.de) and Contributors.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 * Please read the file COPYING, README and AUTHORS for more information.
22 * Connection management
36 #include <sys/socket.h>
38 #include <sys/types.h>
40 #include <netinet/in.h>
42 #ifdef HAVE_NETINET_IP_H
43 # ifdef HAVE_NETINET_IN_SYSTM_H
44 # include <netinet/in_systm.h>
46 # include <netinet/ip.h>
50 # include <tcpd.h> /* for TCP Wrappers */
63 #include "conn-encoding.h"
66 #include "conn-func.h"
68 #include "ng_ipaddr.h"
73 #define SERVER_WAIT (NONE - 1)
75 #define MAX_COMMANDS 3
76 #define MAX_COMMANDS_SERVER_MIN 10
77 #define MAX_COMMANDS_SERVICE 10
79 #define SD_LISTEN_FDS_START 3
81 static bool Handle_Write PARAMS(( CONN_ID Idx ));
82 static bool Conn_Write PARAMS(( CONN_ID Idx, char *Data, size_t Len ));
83 static int New_Connection PARAMS(( int Sock, bool IsSSL ));
84 static CONN_ID Socket2Index PARAMS(( int Sock ));
85 static void Read_Request PARAMS(( CONN_ID Idx ));
86 static unsigned int Handle_Buffer PARAMS(( CONN_ID Idx ));
87 static void Check_Connections PARAMS(( void ));
88 static void Check_Servers PARAMS(( void ));
89 static void Init_Conn_Struct PARAMS(( CONN_ID Idx ));
90 static bool Init_Socket PARAMS(( int Sock ));
91 static void New_Server PARAMS(( int Server, ng_ipaddr_t *dest ));
92 static void Simple_Message PARAMS(( int Sock, const char *Msg ));
93 static int NewListener PARAMS(( const char *listen_addr, UINT16 Port ));
94 static void Account_Connection PARAMS((void));
96 static array My_Listeners;
97 static array My_ConnArray;
98 static size_t NumConnections, NumConnectionsMax, NumConnectionsAccepted;
101 int allow_severity = LOG_INFO;
102 int deny_severity = LOG_ERR;
105 static void server_login PARAMS((CONN_ID idx));
108 extern struct SSLOptions Conf_SSLOptions;
109 static void cb_connserver_login_ssl PARAMS((int sock, short what));
110 static void cb_clientserver_ssl PARAMS((int sock, short what));
112 static void cb_Read_Resolver_Result PARAMS((int sock, UNUSED short what));
113 static void cb_Connect_to_Server PARAMS((int sock, UNUSED short what));
114 static void cb_clientserver PARAMS((int sock, short what));
120 * Get number of sockets available from systemd(8).
122 * ngIRCd needs to implement its own sd_listen_fds(3) function and can't
123 * use the one provided by systemd itself, because the sockets will be
124 * used in a forked child process with a new PID, and this would trigger
125 * an error in the standard implementation.
127 * @return Number of sockets available, -1 if sockets have already been
128 * initialized, or 0 when no sockets have been passed.
131 my_sd_listen_fds(void)
136 /* Check if LISTEN_PID exists; but we ignore the result, because
137 * normally ngircd forks a child before checking this, and therefore
138 * the PID set in the environment is always wrong ... */
139 e = getenv("LISTEN_PID");
143 e = getenv("LISTEN_FDS");
148 unsetenv("LISTEN_FDS");
156 * IO callback for listening sockets: handle new connections. This callback
157 * gets called when a new non-SSL connection should be accepted.
159 * @param sock Socket descriptor.
160 * @param irrelevant (ignored IO specification)
163 cb_listen(int sock, short irrelevant)
166 (void) New_Connection(sock, false);
172 * IO callback for listening SSL sockets: handle new connections. This callback
173 * gets called when a new SSL-enabled connection should be accepted.
175 * @param sock Socket descriptor.
176 * @param irrelevant (ignored IO specification)
179 cb_listen_ssl(int sock, short irrelevant)
184 fd = New_Connection(sock, true);
187 io_event_setcb(My_Connections[fd].sock, cb_clientserver_ssl);
193 * IO callback for new outgoing non-SSL server connections.
195 * @param sock Socket descriptor.
196 * @param what IO specification (IO_WANTREAD/IO_WANTWRITE/...).
199 cb_connserver(int sock, UNUSED short what)
201 int res, err, server;
203 CONN_ID idx = Socket2Index( sock );
206 LogDebug("cb_connserver wants to write on unknown socket?!");
211 assert(what & IO_WANTWRITE);
213 /* Make sure that the server is still configured; it could have been
214 * removed in the meantime! */
215 server = Conf_GetServer(idx);
217 Log(LOG_ERR, "Connection on socket %d to \"%s\" aborted!",
218 sock, My_Connections[idx].host);
219 Conn_Close(idx, "Connection aborted", NULL, false);
223 /* connect() finished, get result. */
224 sock_len = (socklen_t)sizeof(err);
225 res = getsockopt(My_Connections[idx].sock, SOL_SOCKET, SO_ERROR,
227 assert(sock_len == sizeof(err));
229 /* Error while connecting? */
230 if ((res != 0) || (err != 0)) {
232 Log(LOG_CRIT, "getsockopt (connection %d): %s!",
233 idx, strerror(errno));
236 "Can't connect socket to \"%s:%d\" (connection %d): %s!",
237 My_Connections[idx].host, Conf_Server[server].port,
240 Conn_Close(idx, "Can't connect", NULL, false);
242 if (ng_ipaddr_af(&Conf_Server[server].dst_addr[0])) {
243 /* more addresses to try... */
244 New_Server(server, &Conf_Server[server].dst_addr[0]);
245 /* connection to dst_addr[0] is now in progress, so
246 * remove this address... */
247 Conf_Server[server].dst_addr[0] =
248 Conf_Server[server].dst_addr[1];
249 memset(&Conf_Server[server].dst_addr[1], 0,
250 sizeof(Conf_Server[server].dst_addr[1]));
255 /* connect() succeeded, remove all additional addresses */
256 memset(&Conf_Server[server].dst_addr, 0,
257 sizeof(Conf_Server[server].dst_addr));
259 Conn_OPTION_DEL( &My_Connections[idx], CONN_ISCONNECTING );
261 if ( Conn_OPTION_ISSET( &My_Connections[idx], CONN_SSL_CONNECT )) {
262 io_event_setcb( sock, cb_connserver_login_ssl );
263 io_event_add( sock, IO_WANTWRITE|IO_WANTREAD );
272 * Login to a remote server.
274 * @param idx Connection index.
277 server_login(CONN_ID idx)
280 "Connection %d (socket %d) with \"%s:%d\" established. Now logging in ...",
281 idx, My_Connections[idx].sock, My_Connections[idx].host,
282 Conf_Server[Conf_GetServer(idx)].port);
284 io_event_setcb( My_Connections[idx].sock, cb_clientserver);
285 io_event_add( My_Connections[idx].sock, IO_WANTREAD|IO_WANTWRITE);
287 /* Send PASS and SERVER command to peer */
288 Conn_WriteStr( idx, "PASS %s %s", Conf_Server[Conf_GetServer( idx )].pwd_out, NGIRCd_ProtoID );
289 Conn_WriteStr( idx, "SERVER %s :%s", Conf_ServerName, Conf_ServerInfo );
295 * IO callback for new outgoing SSL-enabled server connections.
297 * @param sock Socket descriptor.
298 * @param unused (ignored IO specification)
301 cb_connserver_login_ssl(int sock, short unused)
303 CONN_ID idx = Socket2Index(sock);
311 switch (ConnSSL_Connect( &My_Connections[idx])) {
313 case 0: LogDebug("ConnSSL_Connect: not ready");
316 Log(LOG_ERR, "SSL connection on socket %d failed!", sock);
317 Conn_Close(idx, "Can't connect", NULL, false);
321 Log( LOG_INFO, "SSL connection %d with \"%s:%d\" established.", idx,
322 My_Connections[idx].host, Conf_Server[Conf_GetServer( idx )].port );
330 * IO callback for established non-SSL client and server connections.
332 * @param sock Socket descriptor.
333 * @param what IO specification (IO_WANTREAD/IO_WANTWRITE/...).
336 cb_clientserver(int sock, short what)
338 CONN_ID idx = Socket2Index(sock);
347 if (what & IO_WANTREAD
348 || (Conn_OPTION_ISSET(&My_Connections[idx], CONN_SSL_WANT_WRITE))) {
349 /* if TLS layer needs to write additional data, call
350 * Read_Request() instead so that SSL/TLS can continue */
354 if (what & IO_WANTREAD)
357 if (what & IO_WANTWRITE)
364 * IO callback for new SSL-enabled client and server connections.
366 * @param sock Socket descriptor.
367 * @param what IO specification (IO_WANTREAD/IO_WANTWRITE/...).
370 cb_clientserver_ssl(int sock, UNUSED short what)
372 CONN_ID idx = Socket2Index(sock);
381 switch (ConnSSL_Accept(&My_Connections[idx])) {
385 return; /* EAGAIN: callback will be invoked again by IO layer */
388 "SSL accept error, closing socket", "SSL accept error",
393 io_event_setcb(sock, cb_clientserver); /* SSL handshake completed */
399 * Initialize connection module.
406 Pool_Size = CONNECTION_POOL;
407 if ((Conf_MaxConnections > 0) &&
408 (Pool_Size > Conf_MaxConnections))
409 Pool_Size = Conf_MaxConnections;
411 if (!array_alloc(&My_ConnArray, sizeof(CONNECTION), (size_t)Pool_Size)) {
412 Log(LOG_EMERG, "Can't allocate memory! [Conn_Init]");
416 /* FIXME: My_Connetions/Pool_Size is needed by other parts of the
417 * code; remove them! */
418 My_Connections = (CONNECTION*) array_start(&My_ConnArray);
420 LogDebug("Allocated connection pool for %d items (%ld bytes).",
421 array_length(&My_ConnArray, sizeof(CONNECTION)),
422 array_bytes(&My_ConnArray));
424 assert(array_length(&My_ConnArray, sizeof(CONNECTION)) >= (size_t)Pool_Size);
426 array_free( &My_Listeners );
428 for (i = 0; i < Pool_Size; i++)
434 * Clean up connection module.
441 Conn_ExitListeners();
443 LogDebug("Shutting down all connections ..." );
444 for( idx = 0; idx < Pool_Size; idx++ ) {
445 if( My_Connections[idx].sock > NONE ) {
446 Conn_Close( idx, NULL, NGIRCd_SignalRestart ?
447 "Server going down (restarting)":"Server going down", true );
451 array_free(&My_ConnArray);
452 My_Connections = NULL;
454 io_library_shutdown();
459 * Close all sockets (file descriptors) of open connections.
460 * This is useful in forked child processes, for example, to make sure that
461 * they don't hold connections open that the main process wants to close.
464 Conn_CloseAllSockets(int ExceptOf)
468 for(idx = 0; idx < Pool_Size; idx++) {
469 if(My_Connections[idx].sock > NONE &&
470 My_Connections[idx].sock != ExceptOf)
471 close(My_Connections[idx].sock);
477 * Initialize listening ports.
479 * @param a Array containing the ports the daemon should listen on.
480 * @param listen_addr Address the socket should listen on (can be "0.0.0.0").
481 * @param func IO callback function to register.
482 * @returns Number of listening sockets created.
485 Init_Listeners(array *a, const char *listen_addr, void (*func)(int,short))
487 unsigned int created = 0;
492 len = array_length(a, sizeof (UINT16));
493 port = array_start(a);
495 fd = NewListener(listen_addr, *port);
500 if (!io_event_create( fd, IO_WANTREAD, func )) {
502 "io_event_create(): Can't add fd %d (port %u): %s!",
503 fd, (unsigned int) *port, strerror(errno));
516 * Initialize all listening sockets.
518 * @returns Number of created listening sockets
521 Conn_InitListeners( void )
523 /* Initialize ports on which the server should accept connections */
524 unsigned int created = 0;
525 char *af_str, *copy, *listen_addr;
526 int count, fd, i, addr_len;
529 assert(Conf_ListenAddress);
531 count = my_sd_listen_fds();
534 "Not re-initializing listening sockets of systemd(8) ...");
538 /* systemd(8) passed sockets to us, so don't try to initialize
539 * listening sockets on our own but use the passed ones */
540 LogDebug("Initializing %d systemd sockets ...", count);
541 for (i = 0; i < count; i++) {
542 fd = SD_LISTEN_FDS_START + i;
543 addr_len = (int)sizeof(addr);
544 getsockname(fd, (struct sockaddr *)&addr, (socklen_t*)&addr_len);
546 if (addr.sin4.sin_family != AF_INET && addr.sin4.sin_family != AF_INET6)
548 if (addr.sin4.sin_family != AF_INET)
551 /* Socket is of unsupported type! For example, systemd passed in
552 * an IPv6 socket but ngIRCd isn't compiled with IPv6 support. */
553 switch (addr.sin4.sin_family)
555 case AF_UNSPEC: af_str = "AF_UNSPEC"; break;
556 case AF_UNIX: af_str = "AF_UNIX"; break;
557 case AF_INET: af_str = "AF_INET"; break;
559 case AF_INET6: af_str = "AF_INET6"; break;
562 case AF_NETLINK: af_str = "AF_NETLINK"; break;
564 default: af_str = "unknown"; break;
567 "Socket %d is of unsupported type \"%s\" (%d), have to ignore it!",
568 fd, af_str, addr.sin4.sin_family);
574 if (!io_event_create(fd, IO_WANTREAD, cb_listen)) {
576 "io_event_create(): Can't add fd %d: %s!",
577 fd, strerror(errno));
581 "Initialized socket %d from systemd(8): %s:%d.", fd,
582 ng_ipaddr_tostr(&addr), ng_ipaddr_getport(&addr));
588 /* not using systemd socket activation, initialize listening sockets: */
590 /* can't use Conf_ListenAddress directly, see below */
591 copy = strdup(Conf_ListenAddress);
593 Log(LOG_CRIT, "Cannot copy %s: %s", Conf_ListenAddress,
597 listen_addr = strtok(copy, ",");
599 while (listen_addr) {
600 ngt_TrimStr(listen_addr);
602 created += Init_Listeners(&Conf_ListenPorts,
603 listen_addr, cb_listen);
605 created += Init_Listeners(&Conf_SSLOptions.ListenPorts,
606 listen_addr, cb_listen_ssl);
610 listen_addr = strtok(NULL, ",");
613 /* Can't free() Conf_ListenAddress here: on REHASH, if the config file
614 * cannot be re-loaded, we'd end up with a NULL Conf_ListenAddress.
615 * Instead, free() takes place in conf.c, before the config file
616 * is being parsed. */
620 } /* Conn_InitListeners */
624 * Shut down all listening sockets.
627 Conn_ExitListeners( void )
629 /* Close down all listening sockets */
633 /* Get number of listening sockets to shut down. There can be none
634 * if ngIRCd has been "socket activated" by systemd. */
635 arraylen = array_length(&My_Listeners, sizeof (int));
640 "Shutting down all listening sockets (%d total) ...", arraylen);
641 fd = array_start(&My_Listeners);
646 LogDebug("Listening socket %d closed.", *fd );
649 array_free(&My_Listeners);
650 } /* Conn_ExitListeners */
654 * Bind a socket to a specific (source) address.
656 * @param addr Address structure.
657 * @param listen_addrstr Source address as string.
658 * @param Port Port number.
659 * @returns true on success, false otherwise.
662 InitSinaddrListenAddr(ng_ipaddr_t *addr, const char *listen_addrstr, UINT16 Port)
666 ret = ng_ipaddr_init(addr, listen_addrstr, Port);
668 assert(listen_addrstr);
669 Log(LOG_CRIT, "Can't bind to [%s]:%u: can't convert ip address \"%s\"!",
670 listen_addrstr, Port, listen_addrstr);
677 * Set a socket to "IPv6 only". If the given socket doesn't belong to the
678 * AF_INET6 family, or the operating system doesn't support this functionality,
679 * this function retruns silently.
681 * @param af Address family of the socket.
682 * @param sock Socket handle.
685 set_v6_only(int af, int sock)
687 #if defined(IPV6_V6ONLY) && defined(WANT_IPV6)
693 if (setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, &on, (socklen_t)sizeof(on)))
694 Log(LOG_ERR, "Could not set IPV6_V6ONLY: %s", strerror(errno));
703 * Initialize new listening port.
705 * @param listen_addr Local address to bind the socet to (can be 0.0.0.0).
706 * @param Port Port number on which the new socket should be listening.
707 * @returns file descriptor of the socket or -1 on failure.
710 NewListener(const char *listen_addr, UINT16 Port)
712 /* Create new listening socket on specified port */
716 if (!InitSinaddrListenAddr(&addr, listen_addr, Port))
719 af = ng_ipaddr_af(&addr);
720 sock = socket(af, SOCK_STREAM, 0);
722 Log(LOG_CRIT, "Can't create socket (af %d) : %s!", af,
727 set_v6_only(af, sock);
729 if (!Init_Socket(sock))
732 if (bind(sock, (struct sockaddr *)&addr, ng_ipaddr_salen(&addr)) != 0) {
733 Log(LOG_CRIT, "Can't bind socket to address %s:%d - %s!",
734 ng_ipaddr_tostr(&addr), Port, strerror(errno));
739 if (listen(sock, 10) != 0) {
740 Log(LOG_CRIT, "Can't listen on socket: %s!", strerror(errno));
745 /* keep fd in list so we can close it when ngircd restarts/shuts down */
746 if (!array_catb(&My_Listeners, (char *)&sock, sizeof(int))) {
747 Log(LOG_CRIT, "Can't add socket to My_Listeners array: %s!",
753 Log(LOG_INFO, "Now listening on [%s]:%d (socket %d).",
754 ng_ipaddr_tostr(&addr), Port, sock);
762 * Check if SSL library needs to read SSL-protocol related data.
764 * SSL/TLS connections require extra treatment:
765 * When either CONN_SSL_WANT_WRITE or CONN_SSL_WANT_READ is set, we
766 * need to take care of that first, before checking read/write buffers.
767 * For instance, while we might have data in our write buffer, the
768 * TLS/SSL protocol might need to read internal data first for TLS/SSL
771 * If this function returns true, such a condition is met and we have
772 * to reverse the condition (check for read even if we've data to write,
773 * do not check for read but writeability even if write-buffer is empty).
775 * @param c Connection to check.
776 * @returns true if SSL-library has to read protocol data.
779 SSL_WantRead(const CONNECTION *c)
781 if (Conn_OPTION_ISSET(c, CONN_SSL_WANT_READ)) {
782 io_event_add(c->sock, IO_WANTREAD);
789 * Check if SSL library needs to write SSL-protocol related data.
791 * Please see description of SSL_WantRead() for full description!
793 * @param c Connection to check.
794 * @returns true if SSL-library has to write protocol data.
797 SSL_WantWrite(const CONNECTION *c)
799 if (Conn_OPTION_ISSET(c, CONN_SSL_WANT_WRITE)) {
800 io_event_add(c->sock, IO_WANTWRITE);
810 * "Main Loop": Loop until shutdown or restart is signalled.
812 * This function loops until a shutdown or restart of ngIRCd is signalled and
813 * calls io_dispatch() to check for readable and writable sockets every second.
814 * It checks for status changes on pending connections (e. g. when a hostname
815 * has been resolved), checks for "penalties" and timeouts, and handles the
822 unsigned int wdatalen, bytes_processed;
826 while (!NGIRCd_SignalQuit && !NGIRCd_SignalRestart) {
829 /* Check configured servers and established links */
833 /* Expire outdated class/list items */
836 /* Look for non-empty read buffers ... */
837 for (i = 0; i < Pool_Size; i++) {
838 if ((My_Connections[i].sock > NONE)
839 && (array_bytes(&My_Connections[i].rbuf) > 0)) {
840 /* ... and try to handle the received data */
841 bytes_processed = Handle_Buffer(i);
842 /* if we processed data, and there might be
843 * more commands in the input buffer, do not
844 * try to read any more data now */
845 if (bytes_processed &&
846 array_bytes(&My_Connections[i].rbuf) > 2) {
848 ("Throttling connection %d: command limit reached!",
850 Conn_SetPenalty(i, 1);
855 /* Look for non-empty write buffers ... */
856 for (i = 0; i < Pool_Size; i++) {
857 if (My_Connections[i].sock <= NONE)
860 wdatalen = (unsigned int)array_bytes(&My_Connections[i].wbuf);
863 array_bytes(&My_Connections[i].zip.wbuf) > 0)
869 if (SSL_WantRead(&My_Connections[i]))
872 io_event_add(My_Connections[i].sock,
877 /* Check from which sockets we possibly could read ... */
878 for (i = 0; i < Pool_Size; i++) {
879 if (My_Connections[i].sock <= NONE)
882 if (SSL_WantWrite(&My_Connections[i]))
883 continue; /* TLS/SSL layer needs to write data; deal with this first */
885 if (Proc_InProgress(&My_Connections[i].proc_stat)) {
886 /* Wait for completion of forked subprocess
887 * and ignore the socket in the meantime ... */
888 io_event_del(My_Connections[i].sock,
893 if (Conn_OPTION_ISSET(&My_Connections[i], CONN_ISCONNECTING))
894 /* Wait for completion of connect() ... */
897 if (My_Connections[i].delaytime > t) {
898 /* There is a "penalty time" set: ignore socket! */
899 io_event_del(My_Connections[i].sock,
904 io_event_add(My_Connections[i].sock, IO_WANTREAD);
907 /* Set the timeout for reading from the network to 1 second,
908 * which is the granularity with witch we handle "penalty
909 * times" for example.
910 * Note: tv_sec/usec are undefined(!) after io_dispatch()
911 * returns, so we have to set it before each call to it! */
915 /* Wait for activity ... */
916 i = io_dispatch(&tv);
917 if (i == -1 && errno != EINTR) {
918 Log(LOG_EMERG, "Conn_Handler(): io_dispatch(): %s!",
920 Log(LOG_ALERT, "%s exiting due to fatal errors!",
925 /* Should ngIRCd timeout when idle? */
926 if (Conf_IdleTimeout > 0 && NumConnectionsAccepted > 0
927 && idle_t > 0 && time(NULL) - idle_t >= Conf_IdleTimeout) {
928 LogDebug("Server idle timeout reached: %d second%s. Initiating shutdown ...",
930 Conf_IdleTimeout == 1 ? "" : "s");
931 NGIRCd_SignalQuit = true;
935 if (NGIRCd_SignalQuit)
936 Log(LOG_NOTICE | LOG_snotice, "Server going down NOW!");
937 else if (NGIRCd_SignalRestart)
938 Log(LOG_NOTICE | LOG_snotice, "Server restarting NOW!");
943 * Write a text string into the socket of a connection.
945 * This function automatically appends CR+LF to the string and validates that
946 * the result is a valid IRC message (oversized messages are shortened, for
947 * example). Then it calls the Conn_Write() function to do the actual sending.
949 * @param Idx Index fo the connection.
950 * @param Format Format string, see printf().
951 * @returns true on success, false otherwise.
955 Conn_WriteStr(CONN_ID Idx, const char *Format, ...)
958 Conn_WriteStr(Idx, Format, va_alist)
964 char buffer[COMMAND_LEN];
973 assert( Idx > NONE );
974 assert( Format != NULL );
977 va_start( ap, Format );
981 r = vsnprintf(buffer, COMMAND_LEN - 2, Format, ap);
982 if (r >= COMMAND_LEN - 2 || r == -1) {
984 * The string that should be written to the socket is longer
985 * than the allowed size of COMMAND_LEN bytes (including both
986 * the CR and LF characters). This can be caused by the
987 * IRC_WriteXXX() functions when the prefix of this server had
988 * to be added to an already "quite long" command line which
989 * has been received from a regular IRC client, for example.
991 * We are not allowed to send such "oversized" messages to
992 * other servers and clients, see RFC 2812 2.3 and 2813 3.3
993 * ("these messages SHALL NOT exceed 512 characters in length,
994 * counting all characters including the trailing CR-LF").
996 * So we have a big problem here: we should send more bytes
997 * to the network than we are allowed to and we don't know
998 * the originator (any more). The "old" behavior of blaming
999 * the receiver ("next hop") is a bad idea (it could be just
1000 * an other server only routing the message!), so the only
1001 * option left is to shorten the string and to hope that the
1002 * result is still somewhat useful ...
1005 * C99 states that vsnprintf() "returns the number of characters
1006 * that would have been printed if the n were unlimited"; but
1007 * according to the Linux manual page "glibc until 2.0.6 would
1008 * return -1 when the output was truncated" -- so we have to
1009 * handle both cases ...
1013 strcpy (buffer + sizeof(buffer) - strlen(CUT_TXTSUFFIX) - 2 - 1,
1018 ptr = strchr(buffer + 1, ':');
1021 message = Conn_EncodingTo(Idx, ptr);
1023 strlcpy(ptr, message, sizeof(buffer) - (ptr - buffer));
1029 Log(LOG_DEBUG, " -> connection %d: '%s'.", Idx, buffer);
1032 len = strlcat( buffer, "\r\n", sizeof( buffer ));
1033 ok = Conn_Write(Idx, buffer, len);
1034 My_Connections[Idx].msg_out++;
1038 } /* Conn_WriteStr */
1041 Conn_Password( CONN_ID Idx )
1043 assert( Idx > NONE );
1044 if (My_Connections[Idx].pwd == NULL)
1047 return My_Connections[Idx].pwd;
1048 } /* Conn_Password */
1051 Conn_SetPassword( CONN_ID Idx, const char *Pwd )
1053 assert( Idx > NONE );
1055 if (My_Connections[Idx].pwd)
1056 free(My_Connections[Idx].pwd);
1058 My_Connections[Idx].pwd = strdup(Pwd);
1059 if (My_Connections[Idx].pwd == NULL) {
1060 Log(LOG_EMERG, "Can't allocate memory! [Conn_SetPassword]");
1063 } /* Conn_SetPassword */
1066 * Append Data to the outbound write buffer of a connection.
1068 * @param Idx Index of the connection.
1069 * @param Data pointer to the data.
1070 * @param Len length of Data.
1071 * @returns true on success, false otherwise.
1074 Conn_Write( CONN_ID Idx, char *Data, size_t Len )
1077 size_t writebuf_limit = WRITEBUFFER_MAX_LEN;
1078 assert( Idx > NONE );
1079 assert( Data != NULL );
1082 /* Is the socket still open? A previous call to Conn_Write()
1083 * may have closed the connection due to a fatal error.
1084 * In this case it is sufficient to return an error, as well. */
1085 if (My_Connections[Idx].sock <= NONE) {
1086 LogDebug("Skipped write on closed socket (connection %d).", Idx);
1090 /* Make sure that there still exists a CLIENT structure associated
1091 * with this connection and check if this is a server or not: */
1092 c = Conn_GetClient(Idx);
1094 /* Servers do get special write buffer limits, so they can
1095 * generate all the messages that are required while peering. */
1096 if (Client_Type(c) == CLIENT_SERVER)
1097 writebuf_limit = WRITEBUFFER_SLINK_LEN;
1099 LogDebug("Write on socket without client (connection %d)!?", Idx);
1102 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP )) {
1104 * Zip_Buffer() does all the dirty work for us: it flushes
1105 * the (pre-)compression buffers if required and handles
1106 * all error conditions. */
1107 if (!Zip_Buffer(Idx, Data, Len))
1113 /* Uncompressed link:
1114 * Check if outbound buffer has enough space for the data. */
1115 if (array_bytes(&My_Connections[Idx].wbuf) + Len >=
1116 WRITEBUFFER_FLUSH_LEN) {
1117 /* Buffer is full, flush it. Handle_Write deals with
1118 * low-level errors, if any. */
1119 if (!Handle_Write(Idx))
1123 /* When the write buffer is still too big after flushing it,
1124 * the connection will be killed. */
1125 if (array_bytes(&My_Connections[Idx].wbuf) + Len >=
1128 "Write buffer space exhausted (connection %d, limit is %lu bytes, %lu bytes new, %lu bytes pending)",
1129 Idx, writebuf_limit, Len,
1130 (unsigned long)array_bytes(&My_Connections[Idx].wbuf));
1131 Conn_Close(Idx, "Write buffer space exhausted", NULL, false);
1135 /* Copy data to write buffer */
1136 if (!array_catb(&My_Connections[Idx].wbuf, Data, Len))
1139 My_Connections[Idx].bytes_out += Len;
1142 /* Adjust global write counter */
1150 * Shut down a connection.
1152 * @param Idx Connection index.
1153 * @param LogMsg Message to write to the log or NULL. If no LogMsg
1154 * is given, the FwdMsg is logged.
1155 * @param FwdMsg Message to forward to remote servers.
1156 * @param InformClient If true, inform the client on the connection which is
1157 * to be shut down of the reason (FwdMsg) and send
1158 * connection statistics before disconnecting it.
1161 Conn_Close( CONN_ID Idx, const char *LogMsg, const char *FwdMsg, bool InformClient )
1163 /* Close connection. Open pipes of asynchronous resolver
1164 * sub-processes are closed down. */
1170 double in_z_k, out_z_k;
1174 assert( Idx > NONE );
1176 /* Is this link already shutting down? */
1177 if( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ISCLOSING )) {
1178 /* Conn_Close() has been called recursively for this link;
1179 * probable reason: Handle_Write() failed -- see below. */
1180 LogDebug("Recursive request to close connection %d!", Idx );
1184 assert( My_Connections[Idx].sock > NONE );
1186 /* Mark link as "closing" */
1187 Conn_OPTION_ADD( &My_Connections[Idx], CONN_ISCLOSING );
1189 port = ng_ipaddr_getport(&My_Connections[Idx].addr);
1190 Log(LOG_INFO, "Shutting down connection %d (%s) with \"%s:%d\" ...", Idx,
1191 LogMsg ? LogMsg : FwdMsg, My_Connections[Idx].host, port);
1193 /* Search client, if any */
1194 c = Conn_GetClient( Idx );
1196 /* Should the client be informed? */
1199 /* Send statistics to client if registered as user: */
1200 if ((c != NULL) && (Client_Type(c) == CLIENT_USER)) {
1202 ":%s NOTICE %s :%sConnection statistics: client %.1f kb, server %.1f kb.",
1203 Client_ID(Client_ThisServer()), Client_ID(c),
1205 (double)My_Connections[Idx].bytes_in / 1024,
1206 (double)My_Connections[Idx].bytes_out / 1024);
1209 /* Send ERROR to client (see RFC 2812, section 3.1.7) */
1211 Conn_WriteStr(Idx, "ERROR :%s", FwdMsg);
1213 Conn_WriteStr(Idx, "ERROR :Closing connection");
1216 /* Try to write out the write buffer. Note: Handle_Write() eventually
1217 * removes the CLIENT structure associated with this connection if an
1218 * error occurs! So we have to re-check if there is still an valid
1219 * CLIENT structure after calling Handle_Write() ...*/
1220 (void)Handle_Write( Idx );
1222 /* Search client, if any (re-check!) */
1223 c = Conn_GetClient( Idx );
1225 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_SSL )) {
1226 LogDebug("SSL connection %d shutting down ...", Idx);
1227 ConnSSL_Free(&My_Connections[Idx]);
1230 /* Shut down socket */
1231 if (! io_close(My_Connections[Idx].sock)) {
1232 /* Oops, we can't close the socket!? This is ... ugly! */
1234 "Error closing connection %d (socket %d) with %s:%d - %s! (ignored)",
1235 Idx, My_Connections[Idx].sock, My_Connections[Idx].host,
1236 port, strerror(errno));
1239 /* Mark socket as invalid: */
1240 My_Connections[Idx].sock = NONE;
1242 /* If there is still a client, unregister it now */
1244 Client_Destroy(c, LogMsg, FwdMsg, true);
1246 /* Calculate statistics and log information */
1247 in_k = (double)My_Connections[Idx].bytes_in / 1024;
1248 out_k = (double)My_Connections[Idx].bytes_out / 1024;
1250 if (Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP)) {
1251 in_z_k = (double)My_Connections[Idx].zip.bytes_in / 1024;
1252 out_z_k = (double)My_Connections[Idx].zip.bytes_out / 1024;
1253 /* Make sure that no division by zero can occur during
1254 * the calculation of in_p and out_p: in_z_k and out_z_k
1255 * are non-zero, that's guaranteed by the protocol until
1256 * compression can be enabled. */
1261 in_p = (int)(( in_k * 100 ) / in_z_k );
1262 out_p = (int)(( out_k * 100 ) / out_z_k );
1264 "Connection %d with \"%s:%d\" closed (in: %.1fk/%.1fk/%d%%, out: %.1fk/%.1fk/%d%%).",
1265 Idx, My_Connections[Idx].host, port,
1266 in_k, in_z_k, in_p, out_k, out_z_k, out_p);
1272 "Connection %d with \"%s:%d\" closed (in: %.1fk, out: %.1fk).",
1273 Idx, My_Connections[Idx].host, port,
1277 /* Servers: Modify time of next connect attempt? */
1278 Conf_UnsetServer( Idx );
1281 /* Clean up zlib, if link was compressed */
1282 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP )) {
1283 inflateEnd( &My_Connections[Idx].zip.in );
1284 deflateEnd( &My_Connections[Idx].zip.out );
1285 array_free(&My_Connections[Idx].zip.rbuf);
1286 array_free(&My_Connections[Idx].zip.wbuf);
1290 array_free(&My_Connections[Idx].rbuf);
1291 array_free(&My_Connections[Idx].wbuf);
1292 if (My_Connections[Idx].pwd != NULL)
1293 free(My_Connections[Idx].pwd);
1295 /* Clean up connection structure (=free it) */
1296 Init_Conn_Struct( Idx );
1298 assert(NumConnections > 0);
1301 LogDebug("Shutdown of connection %d completed, %ld connection%s left.",
1302 Idx, NumConnections, NumConnections != 1 ? "s" : "");
1304 idle_t = NumConnections > 0 ? 0 : time(NULL);
1309 * Get current number of connections.
1311 * @returns Number of current connections.
1316 return NumConnections;
1321 * Get number of maximum simultaneous connections.
1323 * @returns Number of maximum simultaneous connections.
1328 return NumConnectionsMax;
1329 } /* Conn_CountMax */
1333 * Get number of connections accepted since the daemon startet.
1335 * @returns Number of connections accepted.
1338 Conn_CountAccepted(void)
1340 return NumConnectionsAccepted;
1341 } /* Conn_CountAccepted */
1345 * Synchronize established connections and configured server structures
1346 * after a configuration update and store the correct connection IDs, if any.
1349 Conn_SyncServerStruct(void)
1355 for (i = 0; i < Pool_Size; i++) {
1356 if (My_Connections[i].sock == NONE)
1360 client = Conn_GetClient(i);
1361 if (!client || Client_Type(client) != CLIENT_SERVER)
1364 for (c = 0; c < MAX_SERVERS; c++) {
1365 /* Configured server? */
1366 if (!Conf_Server[c].host[0])
1369 if (strcasecmp(Conf_Server[c].name, Client_ID(client)) == 0)
1370 Conf_Server[c].conn_id = i;
1373 } /* SyncServerStruct */
1377 * Get IP address string of a connection.
1379 * @param Idx Connection index.
1380 * @return Pointer to a global buffer containing the IP address as string.
1383 Conn_GetIPAInfo(CONN_ID Idx)
1386 return ng_ipaddr_tostr(&My_Connections[Idx].addr);
1391 * Send out data of write buffer; connect new sockets.
1393 * @param Idx Connection index.
1394 * @returns true on success, false otherwise.
1397 Handle_Write( CONN_ID Idx )
1402 assert( Idx > NONE );
1403 if ( My_Connections[Idx].sock < 0 ) {
1404 LogDebug("Handle_Write() on closed socket, connection %d", Idx);
1407 assert( My_Connections[Idx].sock > NONE );
1409 wdatalen = array_bytes(&My_Connections[Idx].wbuf );
1412 if (wdatalen == 0) {
1413 /* Write buffer is empty, so we try to flush the compression
1414 * buffer and get some data to work with from there :-) */
1415 if (!Zip_Flush(Idx))
1418 /* Now the write buffer most probably has changed: */
1419 wdatalen = array_bytes(&My_Connections[Idx].wbuf);
1423 if (wdatalen == 0) {
1424 /* Still no data, fine. */
1425 io_event_del(My_Connections[Idx].sock, IO_WANTWRITE );
1431 ("Handle_Write() called for connection %d, %ld bytes pending ...",
1436 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_SSL )) {
1437 len = ConnSSL_Write(&My_Connections[Idx], array_start(&My_Connections[Idx].wbuf), wdatalen);
1441 len = write(My_Connections[Idx].sock,
1442 array_start(&My_Connections[Idx].wbuf), wdatalen );
1445 if (errno == EAGAIN || errno == EINTR)
1448 if (!Conn_OPTION_ISSET(&My_Connections[Idx], CONN_ISCLOSING))
1450 "Write error on connection %d (socket %d): %s!",
1451 Idx, My_Connections[Idx].sock, strerror(errno));
1453 LogDebug("Recursive write error on connection %d (socket %d): %s!",
1454 Idx, My_Connections[Idx].sock, strerror(errno));
1455 Conn_Close(Idx, "Write error", NULL, false);
1459 /* move any data not yet written to beginning */
1460 array_moveleft(&My_Connections[Idx].wbuf, 1, (size_t)len);
1463 } /* Handle_Write */
1467 * Count established connections to a specific IP address.
1469 * @returns Number of established connections.
1472 Count_Connections(ng_ipaddr_t *a)
1477 for (i = 0; i < Pool_Size; i++) {
1478 if (My_Connections[i].sock <= NONE)
1480 if (ng_ipaddr_ipequal(&My_Connections[i].addr, a))
1484 } /* Count_Connections */
1488 * Initialize new client connection on a listening socket.
1490 * @param Sock Listening socket descriptor.
1491 * @param IsSSL true if this socket expects SSL-encrypted data.
1492 * @returns Accepted socket descriptor or -1 on error.
1495 New_Connection(int Sock, UNUSED bool IsSSL)
1498 struct request_info req;
1500 ng_ipaddr_t new_addr;
1501 char ip_str[NG_INET_ADDRSTRLEN];
1502 int new_sock, new_sock_len;
1506 assert(Sock > NONE);
1508 LogDebug("Accepting new connection on socket %d ...", Sock);
1510 new_sock_len = (int)sizeof(new_addr);
1511 new_sock = accept(Sock, (struct sockaddr *)&new_addr,
1512 (socklen_t *)&new_sock_len);
1514 Log(LOG_CRIT, "Can't accept connection: %s!", strerror(errno));
1517 NumConnectionsAccepted++;
1519 if (!ng_ipaddr_tostr_r(&new_addr, ip_str)) {
1520 Log(LOG_CRIT, "fd %d: Can't convert IP address!", new_sock);
1521 Simple_Message(new_sock, "ERROR :Internal Server Error");
1527 /* Validate socket using TCP Wrappers */
1528 request_init(&req, RQ_DAEMON, PACKAGE_NAME, RQ_FILE, new_sock,
1529 RQ_CLIENT_SIN, &new_addr, NULL);
1531 if (!hosts_access(&req)) {
1533 "Refused connection from %s (by TCP Wrappers)!", ip_str);
1534 Simple_Message(new_sock, "ERROR :Connection refused");
1540 if (!Init_Socket(new_sock))
1543 /* Check global connection limit */
1544 if ((Conf_MaxConnections > 0) &&
1545 (NumConnections >= (size_t) Conf_MaxConnections)) {
1546 Log(LOG_ALERT, "Can't accept connection: limit (%d) reached!",
1547 Conf_MaxConnections);
1548 Simple_Message(new_sock, "ERROR :Connection limit reached");
1553 /* Check IP-based connection limit */
1554 cnt = Count_Connections(&new_addr);
1555 if ((Conf_MaxConnectionsIP > 0) && (cnt >= Conf_MaxConnectionsIP)) {
1556 /* Access denied, too many connections from this IP address! */
1558 "Refused connection from %s: too may connections (%ld) from this IP address!",
1560 Simple_Message(new_sock,
1561 "ERROR :Connection refused, too many connections from your IP address");
1566 if (new_sock >= Pool_Size) {
1567 if (!array_alloc(&My_ConnArray, sizeof(CONNECTION),
1568 (size_t) new_sock)) {
1570 "Can't allocate memory! [New_Connection]");
1571 Simple_Message(new_sock, "ERROR: Internal error");
1575 LogDebug("Bumped connection pool to %ld items (internal: %ld items, %ld bytes)",
1576 new_sock, array_length(&My_ConnArray,
1577 sizeof(CONNECTION)), array_bytes(&My_ConnArray));
1579 /* Adjust pointer to new block */
1580 My_Connections = array_start(&My_ConnArray);
1581 while (Pool_Size <= new_sock)
1582 Init_Conn_Struct(Pool_Size++);
1585 /* register callback */
1586 if (!io_event_create(new_sock, IO_WANTREAD, cb_clientserver)) {
1588 "Can't accept connection: io_event_create failed!");
1589 Simple_Message(new_sock, "ERROR :Internal error");
1594 c = Client_NewLocal(new_sock, NULL, CLIENT_UNKNOWN, false);
1597 "Can't accept connection: can't create client structure!");
1598 Simple_Message(new_sock, "ERROR :Internal error");
1603 Init_Conn_Struct(new_sock);
1604 My_Connections[new_sock].sock = new_sock;
1605 My_Connections[new_sock].addr = new_addr;
1606 My_Connections[new_sock].client = c;
1608 /* Set initial hostname to IP address. This becomes overwritten when
1609 * the DNS lookup is enabled and succeeds, but is used otherwise. */
1610 if (ng_ipaddr_af(&new_addr) != AF_INET)
1611 snprintf(My_Connections[new_sock].host,
1612 sizeof(My_Connections[new_sock].host), "[%s]", ip_str);
1614 strlcpy(My_Connections[new_sock].host, ip_str,
1615 sizeof(My_Connections[new_sock].host));
1617 Client_SetHostname(c, My_Connections[new_sock].host);
1619 Log(LOG_INFO, "Accepted connection %d from \"%s:%d\" on socket %d.",
1620 new_sock, My_Connections[new_sock].host,
1621 ng_ipaddr_getport(&new_addr), Sock);
1622 Account_Connection();
1625 /* Delay connection initalization until SSL handshake is finished */
1628 Conn_StartLogin(new_sock);
1631 } /* New_Connection */
1635 * Finish connection initialization, start resolver subprocess.
1637 * @param Idx Connection index.
1640 Conn_StartLogin(CONN_ID Idx)
1642 int ident_sock = -1;
1646 /* Nothing to do if DNS (and resolver subprocess) is disabled */
1651 /* Should we make an IDENT request? */
1653 ident_sock = My_Connections[Idx].sock;
1656 if (Conf_NoticeAuth) {
1657 /* Send "NOTICE AUTH" messages to the client */
1660 (void)Conn_WriteStr(Idx,
1661 "NOTICE AUTH :*** Looking up your hostname and checking ident");
1664 (void)Conn_WriteStr(Idx,
1665 "NOTICE AUTH :*** Looking up your hostname");
1666 /* Send buffered data to the client, but break on errors
1667 * because Handle_Write() would have closed the connection
1668 * again in this case! */
1669 if (!Handle_Write(Idx))
1673 Resolve_Addr(&My_Connections[Idx].proc_stat, &My_Connections[Idx].addr,
1674 ident_sock, cb_Read_Resolver_Result);
1679 * Update global connection counters.
1682 Account_Connection(void)
1686 if (NumConnections > NumConnectionsMax)
1687 NumConnectionsMax = NumConnections;
1688 LogDebug("Total number of connections now %lu (max %lu).",
1689 NumConnections, NumConnectionsMax);
1690 } /* Account_Connection */
1694 * Translate socket handle into connection index.
1696 * @param Sock Socket handle.
1697 * @returns Connecion index or NONE, if no connection could be found.
1700 Socket2Index( int Sock )
1702 assert( Sock >= 0 );
1704 if( Sock >= Pool_Size || My_Connections[Sock].sock != Sock ) {
1705 /* the Connection was already closed again, likely due to
1707 LogDebug("Socket2Index: can't get connection for socket %d!", Sock);
1711 } /* Socket2Index */
1715 * Read data from the network to the read buffer. If an error occurs,
1716 * the socket of this connection will be shut down.
1718 * @param Idx Connection index.
1721 Read_Request( CONN_ID Idx )
1724 static const unsigned int maxbps = COMMAND_LEN / 2;
1725 char readbuf[READBUFFER_LEN];
1728 assert( Idx > NONE );
1729 assert( My_Connections[Idx].sock > NONE );
1732 if ((array_bytes(&My_Connections[Idx].rbuf) >= READBUFFER_LEN) ||
1733 (array_bytes(&My_Connections[Idx].zip.rbuf) >= READBUFFER_LEN))
1735 if (array_bytes(&My_Connections[Idx].rbuf) >= READBUFFER_LEN)
1738 /* Read buffer is full */
1740 "Receive buffer space exhausted (connection %d): %d bytes",
1741 Idx, array_bytes(&My_Connections[Idx].rbuf));
1742 Conn_Close(Idx, "Receive buffer space exhausted", NULL, false);
1747 if (Conn_OPTION_ISSET(&My_Connections[Idx], CONN_SSL))
1748 len = ConnSSL_Read( &My_Connections[Idx], readbuf, sizeof(readbuf));
1751 len = read(My_Connections[Idx].sock, readbuf, sizeof(readbuf));
1753 LogDebug("Client \"%s:%u\" is closing connection %d ...",
1754 My_Connections[Idx].host,
1755 ng_ipaddr_tostr(&My_Connections[Idx].addr), Idx);
1756 Conn_Close(Idx, NULL, "Client closed connection", false);
1761 if( errno == EAGAIN ) return;
1762 Log(LOG_ERR, "Read error on connection %d (socket %d): %s!",
1763 Idx, My_Connections[Idx].sock, strerror(errno));
1764 Conn_Close(Idx, "Read error", "Client closed connection",
1769 if (Conn_OPTION_ISSET(&My_Connections[Idx], CONN_ZIP)) {
1770 if (!array_catb(&My_Connections[Idx].zip.rbuf, readbuf,
1773 "Could not append received data to zip input buffer (connection %d): %d bytes!",
1775 Conn_Close(Idx, "Receive buffer space exhausted", NULL,
1782 if (!array_catb( &My_Connections[Idx].rbuf, readbuf, len)) {
1784 "Could not append received data to input buffer (connection %d): %d bytes!",
1786 Conn_Close(Idx, "Receive buffer space exhausted", NULL, false );
1790 /* Update connection statistics */
1791 My_Connections[Idx].bytes_in += len;
1792 My_Connections[Idx].bps += Handle_Buffer(Idx);
1794 /* Make sure that there is still a valid client registered */
1795 c = Conn_GetClient(Idx);
1799 /* Update timestamp of last data received if this connection is
1800 * registered as a user, server or service connection. Don't update
1801 * otherwise, so users have at least Conf_PongTimeout seconds time to
1802 * register with the IRC server -- see Check_Connections().
1803 * Update "lastping", too, if time shifted backwards ... */
1804 if (Client_Type(c) == CLIENT_USER
1805 || Client_Type(c) == CLIENT_SERVER
1806 || Client_Type(c) == CLIENT_SERVICE) {
1808 if (My_Connections[Idx].lastdata != t)
1809 My_Connections[Idx].bps = 0;
1811 My_Connections[Idx].lastdata = t;
1812 if (My_Connections[Idx].lastping > t)
1813 My_Connections[Idx].lastping = t;
1816 /* Look at the data in the (read-) buffer of this connection */
1817 if (Client_Type(c) != CLIENT_SERVER
1818 && Client_Type(c) != CLIENT_UNKNOWNSERVER
1819 && Client_Type(c) != CLIENT_SERVICE
1820 && My_Connections[Idx].bps >= maxbps) {
1821 LogDebug("Throttling connection %d: BPS exceeded! (%u >= %u)",
1822 Idx, My_Connections[Idx].bps, maxbps);
1823 Conn_SetPenalty(Idx, 1);
1825 } /* Read_Request */
1829 * Handle all data in the connection read-buffer.
1831 * Data is processed until no complete command is left in the read buffer,
1832 * or MAX_COMMANDS[_SERVER|_SERVICE] commands were processed.
1833 * When a fatal error occurs, the connection is shut down.
1835 * @param Idx Index of the connection.
1836 * @returns Number of bytes processed.
1839 Handle_Buffer(CONN_ID Idx)
1842 char *ptr1, *ptr2, *first_eol;
1850 unsigned int i, maxcmd = MAX_COMMANDS, len_processed = 0;
1853 c = Conn_GetClient(Idx);
1854 starttime = time(NULL);
1858 /* Servers get special command limits that depend on the user count */
1859 switch (Client_Type(c)) {
1861 maxcmd = (int)(Client_UserCount() / 5)
1862 + MAX_COMMANDS_SERVER_MIN;
1863 /* Allow servers to handle even more commands while peering
1864 * to speed up server login and network synchronization. */
1865 if (Conn_LastPing(Idx) == 0)
1868 case CLIENT_SERVICE:
1869 maxcmd = MAX_COMMANDS_SERVICE; break;
1872 for (i=0; i < maxcmd; i++) {
1874 if (My_Connections[Idx].delaytime > starttime)
1877 /* Unpack compressed data, if compression is in use */
1878 if (Conn_OPTION_ISSET(&My_Connections[Idx], CONN_ZIP)) {
1879 /* When unzipping fails, Unzip_Buffer() shuts
1880 * down the connection itself */
1881 if (!Unzip_Buffer(Idx))
1886 if (0 == array_bytes(&My_Connections[Idx].rbuf))
1889 /* Make sure that the buffer is NULL terminated */
1890 if (!array_cat0_temporary(&My_Connections[Idx].rbuf)) {
1891 Conn_Close(Idx, NULL,
1892 "Can't allocate memory [Handle_Buffer]",
1897 /* RFC 2812, section "2.3 Messages", 5th paragraph:
1898 * "IRC messages are always lines of characters terminated
1899 * with a CR-LF (Carriage Return - Line Feed) pair [...]". */
1901 ptr = strstr(array_start(&My_Connections[Idx].rbuf), "\r\n");
1904 /* Check for non-RFC-compliant request (only CR or LF)?
1905 * Unfortunately, there are quite a few clients out there
1906 * that do this -- e. g. mIRC, BitchX, and Trillian :-( */
1907 ptr1 = strchr(array_start(&My_Connections[Idx].rbuf), '\r');
1908 ptr2 = strchr(array_start(&My_Connections[Idx].rbuf), '\n');
1910 /* Check if there is a single CR or LF _before_ the
1911 * correct CR+LF line terminator: */
1912 first_eol = ptr1 < ptr2 ? ptr1 : ptr2;
1913 if (first_eol < ptr) {
1914 /* Single CR or LF before CR+LF found */
1918 } else if (ptr1 || ptr2) {
1919 /* No CR+LF terminated command found, but single
1920 * CR or LF found ... */
1922 ptr = ptr1 < ptr2 ? ptr1 : ptr2;
1924 ptr = ptr1 ? ptr1 : ptr2;
1932 /* Complete (=line terminated) request found, handle it! */
1935 len = ptr - (char *)array_start(&My_Connections[Idx].rbuf) + delta;
1937 if (len > (COMMAND_LEN - 1)) {
1938 /* Request must not exceed 512 chars (incl. CR+LF!),
1939 * see RFC 2812. Disconnect Client if this happens. */
1941 "Request too long (connection %d): %d bytes (max. %d expected)!",
1942 Idx, array_bytes(&My_Connections[Idx].rbuf),
1944 Conn_Close(Idx, NULL, "Request too long", true);
1948 len_processed += (unsigned int)len;
1950 /* Request is empty (only '\r\n', '\r' or '\n');
1951 * delta is 2 ('\r\n') or 1 ('\r' or '\n'), see above */
1952 array_moveleft(&My_Connections[Idx].rbuf, 1, len);
1956 /* remember if stream is already compressed */
1957 old_z = My_Connections[Idx].options & CONN_ZIP;
1960 My_Connections[Idx].msg_in++;
1962 (Idx, (char *)array_start(&My_Connections[Idx].rbuf)))
1963 return 0; /* error -> connection has been closed */
1965 array_moveleft(&My_Connections[Idx].rbuf, 1, len);
1967 LogDebug("Connection %d: %d bytes left in read buffer.",
1968 Idx, array_bytes(&My_Connections[Idx].rbuf));
1971 if ((!old_z) && (My_Connections[Idx].options & CONN_ZIP) &&
1972 (array_bytes(&My_Connections[Idx].rbuf) > 0)) {
1973 /* The last command activated socket compression.
1974 * Data that was read after that needs to be copied
1975 * to the unzip buffer for decompression: */
1977 (&My_Connections[Idx].zip.rbuf,
1978 &My_Connections[Idx].rbuf)) {
1979 Conn_Close(Idx, NULL,
1980 "Can't allocate memory [Handle_Buffer]",
1985 array_trunc(&My_Connections[Idx].rbuf);
1987 ("Moved already received data (%u bytes) to uncompression buffer.",
1988 array_bytes(&My_Connections[Idx].zip.rbuf));
1992 return len_processed;
1993 } /* Handle_Buffer */
1997 * Check whether established connections are still alive or not.
1998 * If not, play PING-PONG first; and if that doesn't help either,
1999 * disconnect the respective peer.
2002 Check_Connections(void)
2008 for (i = 0; i < Pool_Size; i++) {
2009 if (My_Connections[i].sock < 0)
2012 c = Conn_GetClient(i);
2013 if (c && ((Client_Type(c) == CLIENT_USER)
2014 || (Client_Type(c) == CLIENT_SERVER)
2015 || (Client_Type(c) == CLIENT_SERVICE))) {
2016 /* connected User, Server or Service */
2017 if (My_Connections[i].lastping >
2018 My_Connections[i].lastdata) {
2019 /* We already sent a ping */
2020 if (My_Connections[i].lastping <
2021 time(NULL) - Conf_PongTimeout) {
2023 snprintf(msg, sizeof(msg),
2024 "Ping timeout: %d seconds",
2026 LogDebug("Connection %d: %s.", i, msg);
2027 Conn_Close(i, NULL, msg, true);
2029 } else if (My_Connections[i].lastdata <
2030 time(NULL) - Conf_PingTimeout) {
2031 /* We need to send a PING ... */
2032 LogDebug("Connection %d: sending PING ...", i);
2034 Conn_WriteStr(i, "PING :%s",
2035 Client_ID(Client_ThisServer()));
2038 /* The connection is not fully established yet, so
2039 * we don't do the PING-PONG game here but instead
2040 * disconnect the client after "a short time" if it's
2041 * still not registered. */
2043 if (My_Connections[i].lastdata <
2044 time(NULL) - Conf_PongTimeout) {
2046 ("Unregistered connection %d timed out ...",
2048 Conn_Close(i, NULL, "Timeout", false);
2052 } /* Check_Connections */
2056 * Check if further server links should be established.
2064 time_now = time(NULL);
2066 /* Check all configured servers */
2067 for (i = 0; i < MAX_SERVERS; i++) {
2068 if (Conf_Server[i].conn_id != NONE)
2069 continue; /* Already establishing or connected */
2070 if (!Conf_Server[i].host[0] || !Conf_Server[i].port > 0)
2071 continue; /* No host and/or port configured */
2072 if (Conf_Server[i].flags & CONF_SFLAG_DISABLED)
2073 continue; /* Disabled configuration entry */
2074 if (Conf_Server[i].lasttry > (time_now - Conf_ConnectRetry))
2075 continue; /* We have to wait a little bit ... */
2077 /* Is there already a connection in this group? */
2078 if (Conf_Server[i].group > NONE) {
2079 for (n = 0; n < MAX_SERVERS; n++) {
2082 if ((Conf_Server[n].conn_id != NONE) &&
2083 (Conf_Server[n].group == Conf_Server[i].group))
2086 if (n < MAX_SERVERS)
2090 /* Okay, try to connect now */
2092 "Preparing to establish a new server link for \"%s\" ...",
2093 Conf_Server[i].name);
2094 Conf_Server[i].lasttry = time_now;
2095 Conf_Server[i].conn_id = SERVER_WAIT;
2096 assert(Proc_GetPipeFd(&Conf_Server[i].res_stat) < 0);
2097 Resolve_Name(&Conf_Server[i].res_stat, Conf_Server[i].host,
2098 cb_Connect_to_Server);
2100 } /* Check_Servers */
2104 * Establish a new outgoing server connection.
2106 * @param Server Configuration index of the server.
2107 * @param dest Destination IP address to connect to.
2110 New_Server( int Server , ng_ipaddr_t *dest)
2112 /* Establish new server link */
2113 char ip_str[NG_INET_ADDRSTRLEN];
2114 int af_dest, res, new_sock;
2117 assert( Server > NONE );
2119 /* Make sure that the remote server hasn't re-linked to this server
2120 * asynchronously on its own */
2121 if (Conf_Server[Server].conn_id > NONE) {
2123 "Connection to \"%s\" meanwhile re-established, aborting preparation.");
2127 if (!ng_ipaddr_tostr_r(dest, ip_str)) {
2128 Log(LOG_WARNING, "New_Server: Could not convert IP to string");
2129 Conf_Server[Server].conn_id = NONE;
2133 af_dest = ng_ipaddr_af(dest);
2134 new_sock = socket(af_dest, SOCK_STREAM, 0);
2137 "Establishing connection for \"%s\" to \"%s:%d\" (%s), socket %d ...",
2138 Conf_Server[Server].name, Conf_Server[Server].host,
2139 Conf_Server[Server].port, ip_str, new_sock);
2142 Log(LOG_CRIT, "Can't create socket (af %d): %s!",
2143 af_dest, strerror(errno));
2144 Conf_Server[Server].conn_id = NONE;
2148 if (!Init_Socket(new_sock)) {
2149 Conf_Server[Server].conn_id = NONE;
2153 /* is a bind address configured? */
2154 res = ng_ipaddr_af(&Conf_Server[Server].bind_addr);
2155 /* if yes, bind now. If it fails, warn and let connect() pick a source address */
2156 if (res && bind(new_sock, (struct sockaddr *) &Conf_Server[Server].bind_addr,
2157 ng_ipaddr_salen(&Conf_Server[Server].bind_addr)))
2159 ng_ipaddr_tostr_r(&Conf_Server[Server].bind_addr, ip_str);
2160 Log(LOG_WARNING, "Can't bind socket to %s: %s!", ip_str, strerror(errno));
2162 ng_ipaddr_setport(dest, Conf_Server[Server].port);
2163 res = connect(new_sock, (struct sockaddr *) dest, ng_ipaddr_salen(dest));
2164 if(( res != 0 ) && ( errno != EINPROGRESS )) {
2165 Log( LOG_CRIT, "Can't connect socket: %s!", strerror( errno ));
2167 Conf_Server[Server].conn_id = NONE;
2171 if (!array_alloc(&My_ConnArray, sizeof(CONNECTION), (size_t)new_sock)) {
2173 "Cannot allocate memory for server connection (socket %d)",
2176 Conf_Server[Server].conn_id = NONE;
2180 if (!io_event_create( new_sock, IO_WANTWRITE, cb_connserver)) {
2181 Log(LOG_ALERT, "io_event_create(): could not add fd %d", strerror(errno));
2183 Conf_Server[Server].conn_id = NONE;
2187 My_Connections = array_start(&My_ConnArray);
2189 assert(My_Connections[new_sock].sock <= 0);
2191 Init_Conn_Struct(new_sock);
2193 ng_ipaddr_tostr_r(dest, ip_str);
2194 c = Client_NewLocal(new_sock, ip_str, CLIENT_UNKNOWNSERVER, false);
2196 Log( LOG_ALERT, "Can't establish connection: can't create client structure!" );
2198 Conf_Server[Server].conn_id = NONE;
2202 /* Conn_Close() decrements this counter again */
2203 Account_Connection();
2204 Client_SetIntroducer( c, c );
2205 Client_SetToken( c, TOKEN_OUTBOUND );
2207 /* Register connection */
2208 if (!Conf_SetServer(Server, new_sock))
2210 My_Connections[new_sock].sock = new_sock;
2211 My_Connections[new_sock].addr = *dest;
2212 My_Connections[new_sock].client = c;
2213 strlcpy( My_Connections[new_sock].host, Conf_Server[Server].host,
2214 sizeof(My_Connections[new_sock].host ));
2217 if (Conf_Server[Server].SSLConnect && !ConnSSL_PrepareConnect( &My_Connections[new_sock],
2218 &Conf_Server[Server] ))
2220 Log(LOG_ALERT, "Could not initialize SSL for outgoing connection");
2221 Conn_Close( new_sock, "Could not initialize SSL for outgoing connection", NULL, false );
2222 Init_Conn_Struct( new_sock );
2223 Conf_Server[Server].conn_id = NONE;
2227 LogDebug("Registered new connection %d on socket %d (%ld in total).",
2228 new_sock, My_Connections[new_sock].sock, NumConnections);
2229 Conn_OPTION_ADD( &My_Connections[new_sock], CONN_ISCONNECTING );
2234 * Initialize connection structure.
2236 * @param Idx Connection index.
2239 Init_Conn_Struct(CONN_ID Idx)
2241 time_t now = time(NULL);
2243 memset(&My_Connections[Idx], 0, sizeof(CONNECTION));
2244 My_Connections[Idx].sock = -1;
2245 My_Connections[Idx].signon = now;
2246 My_Connections[Idx].lastdata = now;
2247 My_Connections[Idx].lastprivmsg = now;
2248 Proc_InitStruct(&My_Connections[Idx].proc_stat);
2251 My_Connections[Idx].iconv_from = (iconv_t)(-1);
2252 My_Connections[Idx].iconv_to = (iconv_t)(-1);
2254 } /* Init_Conn_Struct */
2258 * Initialize options of a new socket.
2260 * For example, we try to set socket options SO_REUSEADDR and IPTOS_LOWDELAY.
2261 * The socket is automatically closed if a fatal error is encountered.
2263 * @param Sock Socket handle.
2264 * @returns false if socket was closed due to fatal error.
2267 Init_Socket( int Sock )
2271 if (!io_setnonblock(Sock)) {
2272 Log( LOG_CRIT, "Can't enable non-blocking mode for socket: %s!", strerror( errno ));
2277 /* Don't block this port after socket shutdown */
2279 if( setsockopt( Sock, SOL_SOCKET, SO_REUSEADDR, &value, (socklen_t)sizeof( value )) != 0 )
2281 Log( LOG_ERR, "Can't set socket option SO_REUSEADDR: %s!", strerror( errno ));
2282 /* ignore this error */
2285 /* Set type of service (TOS) */
2286 #if defined(IPPROTO_IP) && defined(IPTOS_LOWDELAY)
2287 value = IPTOS_LOWDELAY;
2288 if (setsockopt(Sock, IPPROTO_IP, IP_TOS, &value,
2289 (socklen_t) sizeof(value))) {
2290 LogDebug("Can't set socket option IP_TOS: %s!",
2292 /* ignore this error */
2294 LogDebug("IP_TOS on socket %d has been set to IPTOS_LOWDELAY.",
2303 * Read results of a resolver sub-process and try to initiate a new server
2306 * @param fd File descriptor of the pipe to the sub-process.
2307 * @param events (ignored IO specification)
2310 cb_Connect_to_Server(int fd, UNUSED short events)
2312 /* Read result of resolver sub-process from pipe and start connection */
2315 ng_ipaddr_t dest_addrs[4]; /* we can handle at most 3; but we read up to
2316 four so we can log the 'more than we can handle'
2317 condition. First result is tried immediately, rest
2318 is saved for later if needed. */
2320 LogDebug("Resolver: Got forward lookup callback on fd %d, events %d", fd, events);
2322 for (i=0; i < MAX_SERVERS; i++) {
2323 if (Proc_GetPipeFd(&Conf_Server[i].res_stat) == fd )
2327 if( i >= MAX_SERVERS) {
2328 /* Ops, no matching server found?! */
2330 LogDebug("Resolver: Got Forward Lookup callback for unknown server!?");
2334 /* Read result from pipe */
2335 len = Proc_Read(&Conf_Server[i].res_stat, dest_addrs, sizeof(dest_addrs));
2336 Proc_Close(&Conf_Server[i].res_stat);
2338 /* Error resolving hostname: reset server structure */
2339 Conf_Server[i].conn_id = NONE;
2343 assert((len % sizeof(ng_ipaddr_t)) == 0);
2345 LogDebug("Got result from resolver: %u structs (%u bytes).", len/sizeof(ng_ipaddr_t), len);
2347 memset(&Conf_Server[i].dst_addr, 0, sizeof(Conf_Server[i].dst_addr));
2348 if (len > sizeof(ng_ipaddr_t)) {
2349 /* more than one address for this hostname, remember them
2350 * in case first address is unreachable/not available */
2351 len -= sizeof(ng_ipaddr_t);
2352 if (len > sizeof(Conf_Server[i].dst_addr)) {
2353 len = sizeof(Conf_Server[i].dst_addr);
2355 "Notice: Resolver returned more IP Addresses for host than we can handle, additional addresses dropped.");
2357 memcpy(&Conf_Server[i].dst_addr, &dest_addrs[1], len);
2360 New_Server(i, dest_addrs);
2361 } /* cb_Read_Forward_Lookup */
2365 * Read results of a resolver sub-process from the pipe and update the
2366 * appropriate connection/client structure(s): hostname and/or IDENT user name.
2368 * @param r_fd File descriptor of the pipe to the sub-process.
2369 * @param events (ignored IO specification)
2372 cb_Read_Resolver_Result( int r_fd, UNUSED short events )
2379 char readbuf[HOST_LEN + 2 + CLIENT_USER_LEN];
2382 char readbuf[HOST_LEN + 1];
2385 LogDebug("Resolver: Got callback on fd %d, events %d", r_fd, events );
2386 i = Conn_GetFromProc(r_fd);
2388 /* Ops, none found? Probably the connection has already
2389 * been closed!? We'll ignore that ... */
2391 LogDebug("Resolver: Got callback for unknown connection!?");
2395 /* Read result from pipe */
2396 len = Proc_Read(&My_Connections[i].proc_stat, readbuf, sizeof readbuf -1);
2397 Proc_Close(&My_Connections[i].proc_stat);
2401 readbuf[len] = '\0';
2402 identptr = strchr(readbuf, '\n');
2403 assert(identptr != NULL);
2405 Log( LOG_CRIT, "Resolver: Got malformed result!");
2410 LogDebug("Got result from resolver: \"%s\" (%u bytes read).", readbuf, len);
2411 /* Okay, we got a complete result: this is a host name for outgoing
2412 * connections and a host name and IDENT user name (if enabled) for
2413 * incoming connections.*/
2414 assert ( My_Connections[i].sock >= 0 );
2415 /* Incoming connection. Search client ... */
2416 c = Conn_GetClient( i );
2417 assert( c != NULL );
2419 /* Only update client information of unregistered clients.
2420 * Note: user commands (e. g. WEBIRC) are always read _after_ reading
2421 * the resolver results, so we don't have to worry to override settings
2422 * from these commands here. */
2423 if(Client_Type(c) == CLIENT_UNKNOWN) {
2424 strlcpy(My_Connections[i].host, readbuf,
2425 sizeof(My_Connections[i].host));
2426 Client_SetHostname(c, readbuf);
2427 if (Conf_NoticeAuth)
2428 (void)Conn_WriteStr(i,
2429 "NOTICE AUTH :*** Found your hostname: %s",
2430 My_Connections[i].host);
2436 if ((*ptr < '0' || *ptr > '9') &&
2437 (*ptr < 'A' || *ptr > 'Z') &&
2438 (*ptr < 'a' || *ptr > 'z'))
2443 /* Erroneous IDENT reply */
2445 "Got invalid IDENT reply for connection %d! Ignored.",
2449 "IDENT lookup for connection %d: \"%s\".",
2451 Client_SetUser(c, identptr, true);
2453 if (Conf_NoticeAuth) {
2454 (void)Conn_WriteStr(i,
2455 "NOTICE AUTH :*** Got %sident response%s%s",
2456 *ptr ? "invalid " : "",
2458 *ptr ? "" : identptr);
2460 } else if(Conf_Ident) {
2461 Log(LOG_INFO, "IDENT lookup for connection %d: no result.", i);
2462 if (Conf_NoticeAuth)
2463 (void)Conn_WriteStr(i,
2464 "NOTICE AUTH :*** No ident response");
2468 if (Conf_NoticeAuth) {
2469 /* Send buffered data to the client, but break on
2470 * errors because Handle_Write() would have closed
2471 * the connection again in this case! */
2472 if (!Handle_Write(i))
2476 Class_HandleServerBans(c);
2480 LogDebug("Resolver: discarding result for already registered connection %d.", i);
2482 } /* cb_Read_Resolver_Result */
2486 * Write a "simple" (error) message to a socket.
2488 * The message is sent without using the connection write buffers, without
2489 * compression/encryption, and even without any error reporting. It is
2490 * designed for error messages of e.g. New_Connection().
2492 * @param Sock Socket handle.
2493 * @param Msg Message string to send.
2496 Simple_Message(int Sock, const char *Msg)
2498 char buf[COMMAND_LEN];
2501 assert(Sock > NONE);
2502 assert(Msg != NULL);
2504 strlcpy(buf, Msg, sizeof buf - 2);
2505 len = strlcat(buf, "\r\n", sizeof buf);
2506 if (write(Sock, buf, len) < 0) {
2507 /* Because this function most probably got called to log
2508 * an error message, any write error is ignored here to
2509 * avoid an endless loop. But casting the result of write()
2510 * to "void" doesn't satisfy the GNU C code attribute
2511 * "warn_unused_result" which is used by some versions of
2512 * glibc (e.g. 2.11.1), therefore this silly error
2513 * "handling" code here :-( */
2516 } /* Simple_Error */
2520 * Get CLIENT structure that belongs to a local connection identified by its
2521 * index number. Each connection belongs to a client by definition, so it is
2522 * not required that the caller checks for NULL return values.
2524 * @param Idx Connection index number.
2525 * @returns Pointer to CLIENT structure.
2528 Conn_GetClient( CONN_ID Idx )
2533 c = array_get(&My_ConnArray, sizeof (CONNECTION), (size_t)Idx);
2535 return c ? c->client : NULL;
2539 * Get PROC_STAT sub-process structure of a connection.
2541 * @param Idx Connection index number.
2542 * @returns PROC_STAT structure.
2545 Conn_GetProcStat(CONN_ID Idx)
2550 c = array_get(&My_ConnArray, sizeof (CONNECTION), (size_t)Idx);
2552 return &c->proc_stat;
2553 } /* Conn_GetProcStat */
2557 * Get CONN_ID from file descriptor associated to a subprocess structure.
2559 * @param fd File descriptor.
2560 * @returns CONN_ID or NONE (-1).
2563 Conn_GetFromProc(int fd)
2568 for (i = 0; i < Pool_Size; i++) {
2569 if ((My_Connections[i].sock != NONE)
2570 && (Proc_GetPipeFd(&My_Connections[i].proc_stat) == fd))
2574 } /* Conn_GetFromProc */
2580 Conn_GetAuthPing(CONN_ID Idx)
2582 assert (Idx != NONE);
2583 return My_Connections[Idx].auth_ping;
2584 } /* Conn_GetAuthPing */
2587 Conn_SetAuthPing(CONN_ID Idx, long ID)
2589 assert (Idx != NONE);
2590 My_Connections[Idx].auth_ping = ID;
2591 } /* Conn_SetAuthPing */
2599 * Get information about used SSL cipher.
2601 * @param Idx Connection index number.
2602 * @param buf Buffer for returned information text.
2603 * @param len Size of return buffer "buf".
2604 * @returns true on success, false otherwise.
2607 Conn_GetCipherInfo(CONN_ID Idx, char *buf, size_t len)
2611 assert(Idx < (int) array_length(&My_ConnArray, sizeof(CONNECTION)));
2612 return ConnSSL_GetCipherInfo(&My_Connections[Idx], buf, len);
2617 * Check if a connection is SSL-enabled or not.
2619 * @param Idx Connection index number.
2620 * @return true if connection is SSL-enabled, false otherwise.
2623 Conn_UsesSSL(CONN_ID Idx)
2627 assert(Idx < (int) array_length(&My_ConnArray, sizeof(CONNECTION)));
2628 return Conn_OPTION_ISSET(&My_Connections[Idx], CONN_SSL);
2633 Conn_GetCertFp(CONN_ID Idx)
2637 assert(Idx < (int) array_length(&My_ConnArray, sizeof(CONNECTION)));
2638 return ConnSSL_GetCertFp(&My_Connections[Idx]);
2643 Conn_SetCertFp(CONN_ID Idx, const char *fingerprint)
2647 assert(Idx < (int) array_length(&My_ConnArray, sizeof(CONNECTION)));
2648 return ConnSSL_SetCertFp(&My_Connections[Idx], fingerprint);
2652 Conn_UsesSSL(UNUSED CONN_ID Idx)
2659 Conn_GetCertFp(UNUSED CONN_ID Idx)
2666 Conn_SetCertFp(UNUSED CONN_ID Idx, UNUSED const char *fingerprint)
2676 * Dump internal state of the "connection module".
2679 Conn_DebugDump(void)
2683 Log(LOG_DEBUG, "Connection status:");
2684 for (i = 0; i < Pool_Size; i++) {
2685 if (My_Connections[i].sock == NONE)
2688 " - %d: host=%s, lastdata=%ld, lastping=%ld, delaytime=%ld, flag=%d, options=%d, bps=%d, client=%s",
2689 My_Connections[i].sock, My_Connections[i].host,
2690 My_Connections[i].lastdata, My_Connections[i].lastping,
2691 My_Connections[i].delaytime, My_Connections[i].flag,
2692 My_Connections[i].options, My_Connections[i].bps,
2693 My_Connections[i].client ? Client_ID(My_Connections[i].client) : "-");
2695 } /* Conn_DumpClients */