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
37 #include <sys/socket.h>
39 #include <sys/types.h>
41 #include <netinet/in.h>
43 #ifdef HAVE_NETINET_IP_H
44 # ifdef HAVE_NETINET_IN_SYSTM_H
45 # include <netinet/in_systm.h>
47 # include <netinet/ip.h>
51 # include <tcpd.h> /* for TCP Wrappers */
66 #include "conn-encoding.h"
69 #include "conn-func.h"
71 #include "ng_ipaddr.h"
79 #define SERVER_WAIT (NONE - 1)
81 #define MAX_COMMANDS 3
82 #define MAX_COMMANDS_SERVER_MIN 10
83 #define MAX_COMMANDS_SERVICE 10
85 #define SD_LISTEN_FDS_START 3
87 static bool Handle_Write PARAMS(( CONN_ID Idx ));
88 static bool Conn_Write PARAMS(( CONN_ID Idx, char *Data, size_t Len ));
89 static int New_Connection PARAMS(( int Sock, bool IsSSL ));
90 static CONN_ID Socket2Index PARAMS(( int Sock ));
91 static void Read_Request PARAMS(( CONN_ID Idx ));
92 static unsigned int Handle_Buffer PARAMS(( CONN_ID Idx ));
93 static void Check_Connections PARAMS(( void ));
94 static void Check_Servers PARAMS(( void ));
95 static void Init_Conn_Struct PARAMS(( CONN_ID Idx ));
96 static bool Init_Socket PARAMS(( int Sock ));
97 static void New_Server PARAMS(( int Server, ng_ipaddr_t *dest ));
98 static void Simple_Message PARAMS(( int Sock, const char *Msg ));
99 static int NewListener PARAMS(( const char *listen_addr, UINT16 Port ));
100 static void Account_Connection PARAMS((void));
102 static array My_Listeners;
103 static array My_ConnArray;
104 static size_t NumConnections, NumConnectionsMax, NumConnectionsAccepted;
107 int allow_severity = LOG_INFO;
108 int deny_severity = LOG_ERR;
111 static void server_login PARAMS((CONN_ID idx));
114 extern struct SSLOptions Conf_SSLOptions;
115 static void cb_connserver_login_ssl PARAMS((int sock, short what));
116 static void cb_clientserver_ssl PARAMS((int sock, short what));
118 static void cb_Read_Resolver_Result PARAMS((int sock, UNUSED short what));
119 static void cb_Connect_to_Server PARAMS((int sock, UNUSED short what));
120 static void cb_clientserver PARAMS((int sock, short what));
126 * Get number of sockets available from systemd(8).
128 * ngIRCd needs to implement its own sd_listen_fds(3) function and can't
129 * use the one provided by systemd itself, because the sockets will be
130 * used in a forked child process with a new PID, and this would trigger
131 * an error in the standard implementation.
133 * @return Number of sockets available, -1 if sockets have already been
134 * initialized, or 0 when no sockets have been passed.
137 my_sd_listen_fds(void)
142 /* Check if LISTEN_PID exists; but we ignore the result, because
143 * normally ngircd forks a child before checking this, and therefore
144 * the PID set in the environment is always wrong ... */
145 e = getenv("LISTEN_PID");
149 e = getenv("LISTEN_FDS");
154 unsetenv("LISTEN_FDS");
162 * IO callback for listening sockets: handle new connections. This callback
163 * gets called when a new non-SSL connection should be accepted.
165 * @param sock Socket descriptor.
166 * @param irrelevant (ignored IO specification)
169 cb_listen(int sock, short irrelevant)
172 (void) New_Connection(sock, false);
178 * IO callback for listening SSL sockets: handle new connections. This callback
179 * gets called when a new SSL-enabled connection should be accepted.
181 * @param sock Socket descriptor.
182 * @param irrelevant (ignored IO specification)
185 cb_listen_ssl(int sock, short irrelevant)
190 fd = New_Connection(sock, true);
193 io_event_setcb(My_Connections[fd].sock, cb_clientserver_ssl);
199 * IO callback for new outgoing non-SSL server connections.
201 * @param sock Socket descriptor.
202 * @param what IO specification (IO_WANTREAD/IO_WANTWRITE/...).
205 cb_connserver(int sock, UNUSED short what)
207 int res, err, server;
209 CONN_ID idx = Socket2Index( sock );
212 LogDebug("cb_connserver wants to write on unknown socket?!");
217 assert(what & IO_WANTWRITE);
219 /* Make sure that the server is still configured; it could have been
220 * removed in the meantime! */
221 server = Conf_GetServer(idx);
223 Log(LOG_ERR, "Connection on socket %d to \"%s\" aborted!",
224 sock, My_Connections[idx].host);
225 Conn_Close(idx, "Connection aborted", NULL, false);
229 /* connect() finished, get result. */
230 sock_len = (socklen_t)sizeof(err);
231 res = getsockopt(My_Connections[idx].sock, SOL_SOCKET, SO_ERROR,
233 assert(sock_len == sizeof(err));
235 /* Error while connecting? */
236 if ((res != 0) || (err != 0)) {
238 Log(LOG_CRIT, "getsockopt (connection %d): %s!",
239 idx, strerror(errno));
242 "Can't connect socket to \"%s:%d\" (connection %d): %s!",
243 My_Connections[idx].host, Conf_Server[server].port,
246 Conn_Close(idx, "Can't connect", NULL, false);
248 if (ng_ipaddr_af(&Conf_Server[server].dst_addr[0])) {
249 /* more addresses to try... */
250 New_Server(server, &Conf_Server[server].dst_addr[0]);
251 /* connection to dst_addr[0] is now in progress, so
252 * remove this address... */
253 Conf_Server[server].dst_addr[0] =
254 Conf_Server[server].dst_addr[1];
255 memset(&Conf_Server[server].dst_addr[1], 0,
256 sizeof(Conf_Server[server].dst_addr[1]));
261 /* connect() succeeded, remove all additional addresses */
262 memset(&Conf_Server[server].dst_addr, 0,
263 sizeof(Conf_Server[server].dst_addr));
265 Conn_OPTION_DEL( &My_Connections[idx], CONN_ISCONNECTING );
267 if ( Conn_OPTION_ISSET( &My_Connections[idx], CONN_SSL_CONNECT )) {
268 io_event_setcb( sock, cb_connserver_login_ssl );
269 io_event_add( sock, IO_WANTWRITE|IO_WANTREAD );
278 * Login to a remote server.
280 * @param idx Connection index.
283 server_login(CONN_ID idx)
286 "Connection %d (socket %d) with \"%s:%d\" established. Now logging in ...",
287 idx, My_Connections[idx].sock, My_Connections[idx].host,
288 Conf_Server[Conf_GetServer(idx)].port);
290 io_event_setcb( My_Connections[idx].sock, cb_clientserver);
291 io_event_add( My_Connections[idx].sock, IO_WANTREAD|IO_WANTWRITE);
293 /* Send PASS and SERVER command to peer */
294 Conn_WriteStr( idx, "PASS %s %s", Conf_Server[Conf_GetServer( idx )].pwd_out, NGIRCd_ProtoID );
295 Conn_WriteStr( idx, "SERVER %s :%s", Conf_ServerName, Conf_ServerInfo );
301 * IO callback for new outgoing SSL-enabled server connections.
303 * @param sock Socket descriptor.
304 * @param unused (ignored IO specification)
307 cb_connserver_login_ssl(int sock, short unused)
309 CONN_ID idx = Socket2Index(sock);
317 switch (ConnSSL_Connect( &My_Connections[idx])) {
319 case 0: LogDebug("ConnSSL_Connect: not ready");
322 Log(LOG_ERR, "SSL connection on socket %d failed!", sock);
323 Conn_Close(idx, "Can't connect", NULL, false);
327 Log( LOG_INFO, "SSL connection %d with \"%s:%d\" established.", idx,
328 My_Connections[idx].host, Conf_Server[Conf_GetServer( idx )].port );
336 * IO callback for established non-SSL client and server connections.
338 * @param sock Socket descriptor.
339 * @param what IO specification (IO_WANTREAD/IO_WANTWRITE/...).
342 cb_clientserver(int sock, short what)
344 CONN_ID idx = Socket2Index(sock);
353 if (what & IO_WANTREAD
354 || (Conn_OPTION_ISSET(&My_Connections[idx], CONN_SSL_WANT_WRITE))) {
355 /* if TLS layer needs to write additional data, call
356 * Read_Request() instead so that SSL/TLS can continue */
360 if (what & IO_WANTREAD)
363 if (what & IO_WANTWRITE)
370 * IO callback for new SSL-enabled client and server connections.
372 * @param sock Socket descriptor.
373 * @param what IO specification (IO_WANTREAD/IO_WANTWRITE/...).
376 cb_clientserver_ssl(int sock, UNUSED short what)
378 CONN_ID idx = Socket2Index(sock);
387 switch (ConnSSL_Accept(&My_Connections[idx])) {
391 return; /* EAGAIN: callback will be invoked again by IO layer */
394 "SSL accept error, closing socket", "SSL accept error",
399 io_event_setcb(sock, cb_clientserver); /* SSL handshake completed */
405 * Initialize connection module.
412 Pool_Size = CONNECTION_POOL;
413 if ((Conf_MaxConnections > 0) &&
414 (Pool_Size > Conf_MaxConnections))
415 Pool_Size = Conf_MaxConnections;
417 if (!array_alloc(&My_ConnArray, sizeof(CONNECTION), (size_t)Pool_Size)) {
418 Log(LOG_EMERG, "Can't allocate memory! [Conn_Init]");
422 /* FIXME: My_Connetions/Pool_Size is needed by other parts of the
423 * code; remove them! */
424 My_Connections = (CONNECTION*) array_start(&My_ConnArray);
426 LogDebug("Allocated connection pool for %d items (%ld bytes).",
427 array_length(&My_ConnArray, sizeof(CONNECTION)),
428 array_bytes(&My_ConnArray));
430 assert(array_length(&My_ConnArray, sizeof(CONNECTION)) >= (size_t)Pool_Size);
432 array_free( &My_Listeners );
434 for (i = 0; i < Pool_Size; i++)
440 * Clean up connection module.
447 Conn_ExitListeners();
449 LogDebug("Shutting down all connections ..." );
450 for( idx = 0; idx < Pool_Size; idx++ ) {
451 if( My_Connections[idx].sock > NONE ) {
452 Conn_Close( idx, NULL, NGIRCd_SignalRestart ?
453 "Server going down (restarting)":"Server going down", true );
457 array_free(&My_ConnArray);
458 My_Connections = NULL;
460 io_library_shutdown();
465 * Close all sockets (file descriptors) of open connections.
466 * This is useful in forked child processes, for example, to make sure that
467 * they don't hold connections open that the main process wants to close.
470 Conn_CloseAllSockets(int ExceptOf)
474 for(idx = 0; idx < Pool_Size; idx++) {
475 if(My_Connections[idx].sock > NONE &&
476 My_Connections[idx].sock != ExceptOf)
477 close(My_Connections[idx].sock);
483 * Initialize listening ports.
485 * @param a Array containing the ports the daemon should listen on.
486 * @param listen_addr Address the socket should listen on (can be "0.0.0.0").
487 * @param func IO callback function to register.
488 * @returns Number of listening sockets created.
491 Init_Listeners(array *a, const char *listen_addr, void (*func)(int,short))
493 unsigned int created = 0;
498 len = array_length(a, sizeof (UINT16));
499 port = array_start(a);
501 fd = NewListener(listen_addr, *port);
506 if (!io_event_create( fd, IO_WANTREAD, func )) {
508 "io_event_create(): Can't add fd %d (port %u): %s!",
509 fd, (unsigned int) *port, strerror(errno));
522 * Initialize all listening sockets.
524 * @returns Number of created listening sockets
527 Conn_InitListeners( void )
529 /* Initialize ports on which the server should accept connections */
530 unsigned int created = 0;
531 char *af_str, *copy, *listen_addr;
532 int count, fd, i, addr_len;
535 assert(Conf_ListenAddress);
537 count = my_sd_listen_fds();
540 "Not re-initializing listening sockets of systemd(8) ...");
544 /* systemd(8) passed sockets to us, so don't try to initialize
545 * listening sockets on our own but use the passed ones */
546 LogDebug("Initializing %d systemd sockets ...", count);
547 for (i = 0; i < count; i++) {
548 fd = SD_LISTEN_FDS_START + i;
549 addr_len = (int)sizeof(addr);
550 getsockname(fd, (struct sockaddr *)&addr, (socklen_t*)&addr_len);
552 if (addr.sin4.sin_family != AF_INET && addr.sin4.sin_family != AF_INET6)
554 if (addr.sin4.sin_family != AF_INET)
557 /* Socket is of unsupported type! For example, systemd passed in
558 * an IPv6 socket but ngIRCd isn't compiled with IPv6 support. */
559 switch (addr.sin4.sin_family)
561 case AF_UNSPEC: af_str = "AF_UNSPEC"; break;
562 case AF_UNIX: af_str = "AF_UNIX"; break;
563 case AF_INET: af_str = "AF_INET"; break;
565 case AF_INET6: af_str = "AF_INET6"; break;
568 case AF_NETLINK: af_str = "AF_NETLINK"; break;
570 default: af_str = "unknown"; break;
573 "Socket %d is of unsupported type \"%s\" (%d), have to ignore it!",
574 fd, af_str, addr.sin4.sin_family);
580 if (!io_event_create(fd, IO_WANTREAD, cb_listen)) {
582 "io_event_create(): Can't add fd %d: %s!",
583 fd, strerror(errno));
587 "Initialized socket %d from systemd(8): %s:%d.", fd,
588 ng_ipaddr_tostr(&addr), ng_ipaddr_getport(&addr));
594 /* not using systemd socket activation, initialize listening sockets: */
596 /* can't use Conf_ListenAddress directly, see below */
597 copy = strdup(Conf_ListenAddress);
599 Log(LOG_CRIT, "Cannot copy %s: %s", Conf_ListenAddress,
603 listen_addr = strtok(copy, ",");
605 while (listen_addr) {
606 ngt_TrimStr(listen_addr);
608 created += Init_Listeners(&Conf_ListenPorts,
609 listen_addr, cb_listen);
611 created += Init_Listeners(&Conf_SSLOptions.ListenPorts,
612 listen_addr, cb_listen_ssl);
616 listen_addr = strtok(NULL, ",");
619 /* Can't free() Conf_ListenAddress here: on REHASH, if the config file
620 * cannot be re-loaded, we'd end up with a NULL Conf_ListenAddress.
621 * Instead, free() takes place in conf.c, before the config file
622 * is being parsed. */
626 } /* Conn_InitListeners */
630 * Shut down all listening sockets.
633 Conn_ExitListeners( void )
635 /* Close down all listening sockets */
639 /* Get number of listening sockets to shut down. There can be none
640 * if ngIRCd has been "socket activated" by systemd. */
641 arraylen = array_length(&My_Listeners, sizeof (int));
646 "Shutting down all listening sockets (%d total) ...", arraylen);
647 fd = array_start(&My_Listeners);
652 LogDebug("Listening socket %d closed.", *fd );
655 array_free(&My_Listeners);
656 } /* Conn_ExitListeners */
660 * Bind a socket to a specific (source) address.
662 * @param addr Address structure.
663 * @param listen_addrstr Source address as string.
664 * @param Port Port number.
665 * @returns true on success, false otherwise.
668 InitSinaddrListenAddr(ng_ipaddr_t *addr, const char *listen_addrstr, UINT16 Port)
672 ret = ng_ipaddr_init(addr, listen_addrstr, Port);
674 assert(listen_addrstr);
675 Log(LOG_CRIT, "Can't bind to [%s]:%u: can't convert ip address \"%s\"!",
676 listen_addrstr, Port, listen_addrstr);
683 * Set a socket to "IPv6 only". If the given socket doesn't belong to the
684 * AF_INET6 family, or the operating system doesn't support this functionality,
685 * this function retruns silently.
687 * @param af Address family of the socket.
688 * @param sock Socket handle.
691 set_v6_only(int af, int sock)
693 #if defined(IPV6_V6ONLY) && defined(WANT_IPV6)
699 if (setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, &on, (socklen_t)sizeof(on)))
700 Log(LOG_ERR, "Could not set IPV6_V6ONLY: %s", strerror(errno));
709 * Initialize new listening port.
711 * @param listen_addr Local address to bind the socet to (can be 0.0.0.0).
712 * @param Port Port number on which the new socket should be listening.
713 * @returns file descriptor of the socket or -1 on failure.
716 NewListener(const char *listen_addr, UINT16 Port)
718 /* Create new listening socket on specified port */
722 if (!InitSinaddrListenAddr(&addr, listen_addr, Port))
725 af = ng_ipaddr_af(&addr);
726 sock = socket(af, SOCK_STREAM, 0);
728 Log(LOG_CRIT, "Can't create socket (af %d) : %s!", af,
733 set_v6_only(af, sock);
735 if (!Init_Socket(sock))
738 if (bind(sock, (struct sockaddr *)&addr, ng_ipaddr_salen(&addr)) != 0) {
739 Log(LOG_CRIT, "Can't bind socket to address %s:%d - %s!",
740 ng_ipaddr_tostr(&addr), Port, strerror(errno));
745 if (listen(sock, 10) != 0) {
746 Log(LOG_CRIT, "Can't listen on socket: %s!", strerror(errno));
751 /* keep fd in list so we can close it when ngircd restarts/shuts down */
752 if (!array_catb(&My_Listeners, (char *)&sock, sizeof(int))) {
753 Log(LOG_CRIT, "Can't add socket to My_Listeners array: %s!",
759 Log(LOG_INFO, "Now listening on [%s]:%d (socket %d).",
760 ng_ipaddr_tostr(&addr), Port, sock);
768 * Check if SSL library needs to read SSL-protocol related data.
770 * SSL/TLS connections require extra treatment:
771 * When either CONN_SSL_WANT_WRITE or CONN_SSL_WANT_READ is set, we
772 * need to take care of that first, before checking read/write buffers.
773 * For instance, while we might have data in our write buffer, the
774 * TLS/SSL protocol might need to read internal data first for TLS/SSL
777 * If this function returns true, such a condition is met and we have
778 * to reverse the condition (check for read even if we've data to write,
779 * do not check for read but writeability even if write-buffer is empty).
781 * @param c Connection to check.
782 * @returns true if SSL-library has to read protocol data.
785 SSL_WantRead(const CONNECTION *c)
787 if (Conn_OPTION_ISSET(c, CONN_SSL_WANT_READ)) {
788 io_event_add(c->sock, IO_WANTREAD);
795 * Check if SSL library needs to write SSL-protocol related data.
797 * Please see description of SSL_WantRead() for full description!
799 * @param c Connection to check.
800 * @returns true if SSL-library has to write protocol data.
803 SSL_WantWrite(const CONNECTION *c)
805 if (Conn_OPTION_ISSET(c, CONN_SSL_WANT_WRITE)) {
806 io_event_add(c->sock, IO_WANTWRITE);
816 * "Main Loop": Loop until shutdown or restart is signalled.
818 * This function loops until a shutdown or restart of ngIRCd is signalled and
819 * calls io_dispatch() to check for readable and writable sockets every second.
820 * It checks for status changes on pending connections (e. g. when a hostname
821 * has been resolved), checks for "penalties" and timeouts, and handles the
828 unsigned int wdatalen, bytes_processed;
832 while (!NGIRCd_SignalQuit && !NGIRCd_SignalRestart) {
835 /* Check configured servers and established links */
839 /* Expire outdated class/list items */
842 /* Look for non-empty read buffers ... */
843 for (i = 0; i < Pool_Size; i++) {
844 if ((My_Connections[i].sock > NONE)
845 && (array_bytes(&My_Connections[i].rbuf) > 0)) {
846 /* ... and try to handle the received data */
847 bytes_processed = Handle_Buffer(i);
848 /* if we processed data, and there might be
849 * more commands in the input buffer, do not
850 * try to read any more data now */
851 if (bytes_processed &&
852 array_bytes(&My_Connections[i].rbuf) > 2) {
854 ("Throttling connection %d: command limit reached!",
856 Conn_SetPenalty(i, 1);
861 /* Look for non-empty write buffers ... */
862 for (i = 0; i < Pool_Size; i++) {
863 if (My_Connections[i].sock <= NONE)
866 wdatalen = (unsigned int)array_bytes(&My_Connections[i].wbuf);
869 array_bytes(&My_Connections[i].zip.wbuf) > 0)
875 if (SSL_WantRead(&My_Connections[i]))
878 io_event_add(My_Connections[i].sock,
883 /* Check from which sockets we possibly could read ... */
884 for (i = 0; i < Pool_Size; i++) {
885 if (My_Connections[i].sock <= NONE)
888 if (SSL_WantWrite(&My_Connections[i]))
889 continue; /* TLS/SSL layer needs to write data; deal with this first */
891 if (Proc_InProgress(&My_Connections[i].proc_stat)) {
892 /* Wait for completion of forked subprocess
893 * and ignore the socket in the meantime ... */
894 io_event_del(My_Connections[i].sock,
899 if (Conn_OPTION_ISSET(&My_Connections[i], CONN_ISCONNECTING))
900 /* Wait for completion of connect() ... */
903 if (My_Connections[i].delaytime > t) {
904 /* There is a "penalty time" set: ignore socket! */
905 io_event_del(My_Connections[i].sock,
910 io_event_add(My_Connections[i].sock, IO_WANTREAD);
913 /* Set the timeout for reading from the network to 1 second,
914 * which is the granularity with witch we handle "penalty
915 * times" for example.
916 * Note: tv_sec/usec are undefined(!) after io_dispatch()
917 * returns, so we have to set it before each call to it! */
921 /* Wait for activity ... */
922 i = io_dispatch(&tv);
923 if (i == -1 && errno != EINTR) {
924 Log(LOG_EMERG, "Conn_Handler(): io_dispatch(): %s!",
926 Log(LOG_ALERT, "%s exiting due to fatal errors!",
931 /* Should ngIRCd timeout when idle? */
932 if (Conf_IdleTimeout > 0 && NumConnectionsAccepted > 0
933 && idle_t > 0 && time(NULL) - idle_t >= Conf_IdleTimeout) {
934 LogDebug("Server idle timeout reached: %d second%s. Initiating shutdown ...",
936 Conf_IdleTimeout == 1 ? "" : "s");
937 NGIRCd_SignalQuit = true;
941 if (NGIRCd_SignalQuit)
942 Log(LOG_NOTICE | LOG_snotice, "Server going down NOW!");
943 else if (NGIRCd_SignalRestart)
944 Log(LOG_NOTICE | LOG_snotice, "Server restarting NOW!");
949 * Write a text string into the socket of a connection.
951 * This function automatically appends CR+LF to the string and validates that
952 * the result is a valid IRC message (oversized messages are shortened, for
953 * example). Then it calls the Conn_Write() function to do the actual sending.
955 * @param Idx Index fo the connection.
956 * @param Format Format string, see printf().
957 * @returns true on success, false otherwise.
961 Conn_WriteStr(CONN_ID Idx, const char *Format, ...)
964 Conn_WriteStr(Idx, Format, va_alist)
970 char buffer[COMMAND_LEN];
979 assert( Idx > NONE );
980 assert( Format != NULL );
983 va_start( ap, Format );
987 r = vsnprintf(buffer, COMMAND_LEN - 2, Format, ap);
988 if (r >= COMMAND_LEN - 2 || r == -1) {
990 * The string that should be written to the socket is longer
991 * than the allowed size of COMMAND_LEN bytes (including both
992 * the CR and LF characters). This can be caused by the
993 * IRC_WriteXXX() functions when the prefix of this server had
994 * to be added to an already "quite long" command line which
995 * has been received from a regular IRC client, for example.
997 * We are not allowed to send such "oversized" messages to
998 * other servers and clients, see RFC 2812 2.3 and 2813 3.3
999 * ("these messages SHALL NOT exceed 512 characters in length,
1000 * counting all characters including the trailing CR-LF").
1002 * So we have a big problem here: we should send more bytes
1003 * to the network than we are allowed to and we don't know
1004 * the originator (any more). The "old" behavior of blaming
1005 * the receiver ("next hop") is a bad idea (it could be just
1006 * an other server only routing the message!), so the only
1007 * option left is to shorten the string and to hope that the
1008 * result is still somewhat useful ...
1011 * C99 states that vsnprintf() "returns the number of characters
1012 * that would have been printed if the n were unlimited"; but
1013 * according to the Linux manual page "glibc until 2.0.6 would
1014 * return -1 when the output was truncated" -- so we have to
1015 * handle both cases ...
1019 strcpy (buffer + sizeof(buffer) - strlen(CUT_TXTSUFFIX) - 2 - 1,
1024 ptr = strchr(buffer + 1, ':');
1027 message = Conn_EncodingTo(Idx, ptr);
1029 strlcpy(ptr, message, sizeof(buffer) - (ptr - buffer));
1035 Log(LOG_DEBUG, " -> connection %d: '%s'.", Idx, buffer);
1038 len = strlcat( buffer, "\r\n", sizeof( buffer ));
1039 ok = Conn_Write(Idx, buffer, len);
1040 My_Connections[Idx].msg_out++;
1044 } /* Conn_WriteStr */
1047 Conn_Password( CONN_ID Idx )
1049 assert( Idx > NONE );
1050 if (My_Connections[Idx].pwd == NULL)
1053 return My_Connections[Idx].pwd;
1054 } /* Conn_Password */
1057 Conn_SetPassword( CONN_ID Idx, const char *Pwd )
1059 assert( Idx > NONE );
1061 if (My_Connections[Idx].pwd)
1062 free(My_Connections[Idx].pwd);
1064 My_Connections[Idx].pwd = strdup(Pwd);
1065 if (My_Connections[Idx].pwd == NULL) {
1066 Log(LOG_EMERG, "Can't allocate memory! [Conn_SetPassword]");
1069 } /* Conn_SetPassword */
1072 * Append Data to the outbound write buffer of a connection.
1074 * @param Idx Index of the connection.
1075 * @param Data pointer to the data.
1076 * @param Len length of Data.
1077 * @returns true on success, false otherwise.
1080 Conn_Write( CONN_ID Idx, char *Data, size_t Len )
1083 size_t writebuf_limit = WRITEBUFFER_MAX_LEN;
1084 assert( Idx > NONE );
1085 assert( Data != NULL );
1088 /* Is the socket still open? A previous call to Conn_Write()
1089 * may have closed the connection due to a fatal error.
1090 * In this case it is sufficient to return an error, as well. */
1091 if (My_Connections[Idx].sock <= NONE) {
1092 LogDebug("Skipped write on closed socket (connection %d).", Idx);
1096 /* Make sure that there still exists a CLIENT structure associated
1097 * with this connection and check if this is a server or not: */
1098 c = Conn_GetClient(Idx);
1100 /* Servers do get special write buffer limits, so they can
1101 * generate all the messages that are required while peering. */
1102 if (Client_Type(c) == CLIENT_SERVER)
1103 writebuf_limit = WRITEBUFFER_SLINK_LEN;
1105 LogDebug("Write on socket without client (connection %d)!?", Idx);
1108 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP )) {
1110 * Zip_Buffer() does all the dirty work for us: it flushes
1111 * the (pre-)compression buffers if required and handles
1112 * all error conditions. */
1113 if (!Zip_Buffer(Idx, Data, Len))
1119 /* Uncompressed link:
1120 * Check if outbound buffer has enough space for the data. */
1121 if (array_bytes(&My_Connections[Idx].wbuf) + Len >=
1122 WRITEBUFFER_FLUSH_LEN) {
1123 /* Buffer is full, flush it. Handle_Write deals with
1124 * low-level errors, if any. */
1125 if (!Handle_Write(Idx))
1129 /* When the write buffer is still too big after flushing it,
1130 * the connection will be killed. */
1131 if (array_bytes(&My_Connections[Idx].wbuf) + Len >=
1134 "Write buffer space exhausted (connection %d, limit is %lu bytes, %lu bytes new, %lu bytes pending)",
1135 Idx, writebuf_limit, Len,
1136 (unsigned long)array_bytes(&My_Connections[Idx].wbuf));
1137 Conn_Close(Idx, "Write buffer space exhausted", NULL, false);
1141 /* Copy data to write buffer */
1142 if (!array_catb(&My_Connections[Idx].wbuf, Data, Len))
1145 My_Connections[Idx].bytes_out += Len;
1148 /* Adjust global write counter */
1156 * Shut down a connection.
1158 * @param Idx Connection index.
1159 * @param LogMsg Message to write to the log or NULL. If no LogMsg
1160 * is given, the FwdMsg is logged.
1161 * @param FwdMsg Message to forward to remote servers.
1162 * @param InformClient If true, inform the client on the connection which is
1163 * to be shut down of the reason (FwdMsg) and send
1164 * connection statistics before disconnecting it.
1167 Conn_Close( CONN_ID Idx, const char *LogMsg, const char *FwdMsg, bool InformClient )
1169 /* Close connection. Open pipes of asynchronous resolver
1170 * sub-processes are closed down. */
1176 double in_z_k, out_z_k;
1180 assert( Idx > NONE );
1182 /* Is this link already shutting down? */
1183 if( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ISCLOSING )) {
1184 /* Conn_Close() has been called recursively for this link;
1185 * probable reason: Handle_Write() failed -- see below. */
1186 LogDebug("Recursive request to close connection %d!", Idx );
1190 assert( My_Connections[Idx].sock > NONE );
1192 /* Mark link as "closing" */
1193 Conn_OPTION_ADD( &My_Connections[Idx], CONN_ISCLOSING );
1195 port = ng_ipaddr_getport(&My_Connections[Idx].addr);
1196 Log(LOG_INFO, "Shutting down connection %d (%s) with \"%s:%d\" ...", Idx,
1197 LogMsg ? LogMsg : FwdMsg, My_Connections[Idx].host, port);
1199 /* Search client, if any */
1200 c = Conn_GetClient( Idx );
1202 /* Should the client be informed? */
1205 /* Send statistics to client if registered as user: */
1206 if ((c != NULL) && (Client_Type(c) == CLIENT_USER)) {
1208 ":%s NOTICE %s :%sConnection statistics: client %.1f kb, server %.1f kb.",
1209 Client_ID(Client_ThisServer()), Client_ID(c),
1211 (double)My_Connections[Idx].bytes_in / 1024,
1212 (double)My_Connections[Idx].bytes_out / 1024);
1215 /* Send ERROR to client (see RFC 2812, section 3.1.7) */
1217 Conn_WriteStr(Idx, "ERROR :%s", FwdMsg);
1219 Conn_WriteStr(Idx, "ERROR :Closing connection");
1222 /* Try to write out the write buffer. Note: Handle_Write() eventually
1223 * removes the CLIENT structure associated with this connection if an
1224 * error occurs! So we have to re-check if there is still an valid
1225 * CLIENT structure after calling Handle_Write() ...*/
1226 (void)Handle_Write( Idx );
1228 /* Search client, if any (re-check!) */
1229 c = Conn_GetClient( Idx );
1231 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_SSL )) {
1232 LogDebug("SSL connection %d shutting down ...", Idx);
1233 ConnSSL_Free(&My_Connections[Idx]);
1236 /* Shut down socket */
1237 if (! io_close(My_Connections[Idx].sock)) {
1238 /* Oops, we can't close the socket!? This is ... ugly! */
1240 "Error closing connection %d (socket %d) with %s:%d - %s! (ignored)",
1241 Idx, My_Connections[Idx].sock, My_Connections[Idx].host,
1242 port, strerror(errno));
1245 /* Mark socket as invalid: */
1246 My_Connections[Idx].sock = NONE;
1248 /* If there is still a client, unregister it now */
1250 Client_Destroy(c, LogMsg, FwdMsg, true);
1252 /* Calculate statistics and log information */
1253 in_k = (double)My_Connections[Idx].bytes_in / 1024;
1254 out_k = (double)My_Connections[Idx].bytes_out / 1024;
1256 if (Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP)) {
1257 in_z_k = (double)My_Connections[Idx].zip.bytes_in / 1024;
1258 out_z_k = (double)My_Connections[Idx].zip.bytes_out / 1024;
1259 /* Make sure that no division by zero can occur during
1260 * the calculation of in_p and out_p: in_z_k and out_z_k
1261 * are non-zero, that's guaranteed by the protocol until
1262 * compression can be enabled. */
1267 in_p = (int)(( in_k * 100 ) / in_z_k );
1268 out_p = (int)(( out_k * 100 ) / out_z_k );
1270 "Connection %d with \"%s:%d\" closed (in: %.1fk/%.1fk/%d%%, out: %.1fk/%.1fk/%d%%).",
1271 Idx, My_Connections[Idx].host, port,
1272 in_k, in_z_k, in_p, out_k, out_z_k, out_p);
1278 "Connection %d with \"%s:%d\" closed (in: %.1fk, out: %.1fk).",
1279 Idx, My_Connections[Idx].host, port,
1283 /* Servers: Modify time of next connect attempt? */
1284 Conf_UnsetServer( Idx );
1287 /* Clean up zlib, if link was compressed */
1288 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP )) {
1289 inflateEnd( &My_Connections[Idx].zip.in );
1290 deflateEnd( &My_Connections[Idx].zip.out );
1291 array_free(&My_Connections[Idx].zip.rbuf);
1292 array_free(&My_Connections[Idx].zip.wbuf);
1296 array_free(&My_Connections[Idx].rbuf);
1297 array_free(&My_Connections[Idx].wbuf);
1298 if (My_Connections[Idx].pwd != NULL)
1299 free(My_Connections[Idx].pwd);
1301 /* Clean up connection structure (=free it) */
1302 Init_Conn_Struct( Idx );
1304 assert(NumConnections > 0);
1307 LogDebug("Shutdown of connection %d completed, %ld connection%s left.",
1308 Idx, NumConnections, NumConnections != 1 ? "s" : "");
1310 idle_t = NumConnections > 0 ? 0 : time(NULL);
1315 * Get current number of connections.
1317 * @returns Number of current connections.
1322 return NumConnections;
1327 * Get number of maximum simultaneous connections.
1329 * @returns Number of maximum simultaneous connections.
1334 return NumConnectionsMax;
1335 } /* Conn_CountMax */
1339 * Get number of connections accepted since the daemon startet.
1341 * @returns Number of connections accepted.
1344 Conn_CountAccepted(void)
1346 return NumConnectionsAccepted;
1347 } /* Conn_CountAccepted */
1351 * Synchronize established connections and configured server structures
1352 * after a configuration update and store the correct connection IDs, if any.
1355 Conn_SyncServerStruct(void)
1361 for (i = 0; i < Pool_Size; i++) {
1362 if (My_Connections[i].sock == NONE)
1366 client = Conn_GetClient(i);
1367 if (!client || Client_Type(client) != CLIENT_SERVER)
1370 for (c = 0; c < MAX_SERVERS; c++) {
1371 /* Configured server? */
1372 if (!Conf_Server[c].host[0])
1375 if (strcasecmp(Conf_Server[c].name, Client_ID(client)) == 0)
1376 Conf_Server[c].conn_id = i;
1379 } /* SyncServerStruct */
1383 * Get IP address string of a connection.
1385 * @param Idx Connection index.
1386 * @return Pointer to a global buffer containing the IP address as string.
1389 Conn_GetIPAInfo(CONN_ID Idx)
1392 return ng_ipaddr_tostr(&My_Connections[Idx].addr);
1397 * Send out data of write buffer; connect new sockets.
1399 * @param Idx Connection index.
1400 * @returns true on success, false otherwise.
1403 Handle_Write( CONN_ID Idx )
1408 assert( Idx > NONE );
1409 if ( My_Connections[Idx].sock < 0 ) {
1410 LogDebug("Handle_Write() on closed socket, connection %d", Idx);
1413 assert( My_Connections[Idx].sock > NONE );
1415 wdatalen = array_bytes(&My_Connections[Idx].wbuf );
1418 if (wdatalen == 0) {
1419 /* Write buffer is empty, so we try to flush the compression
1420 * buffer and get some data to work with from there :-) */
1421 if (!Zip_Flush(Idx))
1424 /* Now the write buffer most probably has changed: */
1425 wdatalen = array_bytes(&My_Connections[Idx].wbuf);
1429 if (wdatalen == 0) {
1430 /* Still no data, fine. */
1431 io_event_del(My_Connections[Idx].sock, IO_WANTWRITE );
1437 ("Handle_Write() called for connection %d, %ld bytes pending ...",
1442 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_SSL )) {
1443 len = ConnSSL_Write(&My_Connections[Idx], array_start(&My_Connections[Idx].wbuf), wdatalen);
1447 len = write(My_Connections[Idx].sock,
1448 array_start(&My_Connections[Idx].wbuf), wdatalen );
1451 if (errno == EAGAIN || errno == EINTR)
1454 if (!Conn_OPTION_ISSET(&My_Connections[Idx], CONN_ISCLOSING))
1456 "Write error on connection %d (socket %d): %s!",
1457 Idx, My_Connections[Idx].sock, strerror(errno));
1459 LogDebug("Recursive write error on connection %d (socket %d): %s!",
1460 Idx, My_Connections[Idx].sock, strerror(errno));
1461 Conn_Close(Idx, "Write error", NULL, false);
1465 /* move any data not yet written to beginning */
1466 array_moveleft(&My_Connections[Idx].wbuf, 1, (size_t)len);
1469 } /* Handle_Write */
1473 * Count established connections to a specific IP address.
1475 * @returns Number of established connections.
1478 Count_Connections(ng_ipaddr_t *a)
1483 for (i = 0; i < Pool_Size; i++) {
1484 if (My_Connections[i].sock <= NONE)
1486 if (ng_ipaddr_ipequal(&My_Connections[i].addr, a))
1490 } /* Count_Connections */
1494 * Initialize new client connection on a listening socket.
1496 * @param Sock Listening socket descriptor.
1497 * @param IsSSL true if this socket expects SSL-encrypted data.
1498 * @returns Accepted socket descriptor or -1 on error.
1501 New_Connection(int Sock, UNUSED bool IsSSL)
1504 struct request_info req;
1506 ng_ipaddr_t new_addr;
1507 char ip_str[NG_INET_ADDRSTRLEN];
1508 int new_sock, new_sock_len;
1512 assert(Sock > NONE);
1514 LogDebug("Accepting new connection on socket %d ...", Sock);
1516 new_sock_len = (int)sizeof(new_addr);
1517 new_sock = accept(Sock, (struct sockaddr *)&new_addr,
1518 (socklen_t *)&new_sock_len);
1520 Log(LOG_CRIT, "Can't accept connection: %s!", strerror(errno));
1523 NumConnectionsAccepted++;
1525 if (!ng_ipaddr_tostr_r(&new_addr, ip_str)) {
1526 Log(LOG_CRIT, "fd %d: Can't convert IP address!", new_sock);
1527 Simple_Message(new_sock, "ERROR :Internal Server Error");
1533 /* Validate socket using TCP Wrappers */
1534 request_init(&req, RQ_DAEMON, PACKAGE_NAME, RQ_FILE, new_sock,
1535 RQ_CLIENT_SIN, &new_addr, NULL);
1537 if (!hosts_access(&req)) {
1539 "Refused connection from %s (by TCP Wrappers)!", ip_str);
1540 Simple_Message(new_sock, "ERROR :Connection refused");
1546 if (!Init_Socket(new_sock))
1549 /* Check global connection limit */
1550 if ((Conf_MaxConnections > 0) &&
1551 (NumConnections >= (size_t) Conf_MaxConnections)) {
1552 Log(LOG_ALERT, "Can't accept connection: limit (%d) reached!",
1553 Conf_MaxConnections);
1554 Simple_Message(new_sock, "ERROR :Connection limit reached");
1559 /* Check IP-based connection limit */
1560 cnt = Count_Connections(&new_addr);
1561 if ((Conf_MaxConnectionsIP > 0) && (cnt >= Conf_MaxConnectionsIP)) {
1562 /* Access denied, too many connections from this IP address! */
1564 "Refused connection from %s: too may connections (%ld) from this IP address!",
1566 Simple_Message(new_sock,
1567 "ERROR :Connection refused, too many connections from your IP address");
1572 if (new_sock >= Pool_Size) {
1573 if (!array_alloc(&My_ConnArray, sizeof(CONNECTION),
1574 (size_t) new_sock)) {
1576 "Can't allocate memory! [New_Connection]");
1577 Simple_Message(new_sock, "ERROR: Internal error");
1581 LogDebug("Bumped connection pool to %ld items (internal: %ld items, %ld bytes)",
1582 new_sock, array_length(&My_ConnArray,
1583 sizeof(CONNECTION)), array_bytes(&My_ConnArray));
1585 /* Adjust pointer to new block */
1586 My_Connections = array_start(&My_ConnArray);
1587 while (Pool_Size <= new_sock)
1588 Init_Conn_Struct(Pool_Size++);
1591 /* register callback */
1592 if (!io_event_create(new_sock, IO_WANTREAD, cb_clientserver)) {
1594 "Can't accept connection: io_event_create failed!");
1595 Simple_Message(new_sock, "ERROR :Internal error");
1600 c = Client_NewLocal(new_sock, NULL, CLIENT_UNKNOWN, false);
1603 "Can't accept connection: can't create client structure!");
1604 Simple_Message(new_sock, "ERROR :Internal error");
1609 Init_Conn_Struct(new_sock);
1610 My_Connections[new_sock].sock = new_sock;
1611 My_Connections[new_sock].addr = new_addr;
1612 My_Connections[new_sock].client = c;
1614 /* Set initial hostname to IP address. This becomes overwritten when
1615 * the DNS lookup is enabled and succeeds, but is used otherwise. */
1616 if (ng_ipaddr_af(&new_addr) != AF_INET)
1617 snprintf(My_Connections[new_sock].host,
1618 sizeof(My_Connections[new_sock].host), "[%s]", ip_str);
1620 strlcpy(My_Connections[new_sock].host, ip_str,
1621 sizeof(My_Connections[new_sock].host));
1623 Client_SetHostname(c, My_Connections[new_sock].host);
1625 Log(LOG_INFO, "Accepted connection %d from \"%s:%d\" on socket %d.",
1626 new_sock, My_Connections[new_sock].host,
1627 ng_ipaddr_getport(&new_addr), Sock);
1628 Account_Connection();
1631 /* Delay connection initalization until SSL handshake is finished */
1634 Conn_StartLogin(new_sock);
1637 } /* New_Connection */
1641 * Finish connection initialization, start resolver subprocess.
1643 * @param Idx Connection index.
1646 Conn_StartLogin(CONN_ID Idx)
1648 int ident_sock = -1;
1652 /* Nothing to do if DNS (and resolver subprocess) is disabled */
1657 /* Should we make an IDENT request? */
1659 ident_sock = My_Connections[Idx].sock;
1662 if (Conf_NoticeAuth) {
1663 /* Send "NOTICE AUTH" messages to the client */
1666 (void)Conn_WriteStr(Idx,
1667 "NOTICE AUTH :*** Looking up your hostname and checking ident");
1670 (void)Conn_WriteStr(Idx,
1671 "NOTICE AUTH :*** Looking up your hostname");
1672 /* Send buffered data to the client, but break on errors
1673 * because Handle_Write() would have closed the connection
1674 * again in this case! */
1675 if (!Handle_Write(Idx))
1679 Resolve_Addr(&My_Connections[Idx].proc_stat, &My_Connections[Idx].addr,
1680 ident_sock, cb_Read_Resolver_Result);
1685 * Update global connection counters.
1688 Account_Connection(void)
1692 if (NumConnections > NumConnectionsMax)
1693 NumConnectionsMax = NumConnections;
1694 LogDebug("Total number of connections now %lu (max %lu).",
1695 NumConnections, NumConnectionsMax);
1696 } /* Account_Connection */
1700 * Translate socket handle into connection index.
1702 * @param Sock Socket handle.
1703 * @returns Connecion index or NONE, if no connection could be found.
1706 Socket2Index( int Sock )
1708 assert( Sock >= 0 );
1710 if( Sock >= Pool_Size || My_Connections[Sock].sock != Sock ) {
1711 /* the Connection was already closed again, likely due to
1713 LogDebug("Socket2Index: can't get connection for socket %d!", Sock);
1717 } /* Socket2Index */
1721 * Read data from the network to the read buffer. If an error occurs,
1722 * the socket of this connection will be shut down.
1724 * @param Idx Connection index.
1727 Read_Request( CONN_ID Idx )
1730 static const unsigned int maxbps = COMMAND_LEN / 2;
1731 char readbuf[READBUFFER_LEN];
1734 assert( Idx > NONE );
1735 assert( My_Connections[Idx].sock > NONE );
1738 if ((array_bytes(&My_Connections[Idx].rbuf) >= READBUFFER_LEN) ||
1739 (array_bytes(&My_Connections[Idx].zip.rbuf) >= READBUFFER_LEN))
1741 if (array_bytes(&My_Connections[Idx].rbuf) >= READBUFFER_LEN)
1744 /* Read buffer is full */
1746 "Receive buffer space exhausted (connection %d): %d bytes",
1747 Idx, array_bytes(&My_Connections[Idx].rbuf));
1748 Conn_Close(Idx, "Receive buffer space exhausted", NULL, false);
1753 if (Conn_OPTION_ISSET(&My_Connections[Idx], CONN_SSL))
1754 len = ConnSSL_Read( &My_Connections[Idx], readbuf, sizeof(readbuf));
1757 len = read(My_Connections[Idx].sock, readbuf, sizeof(readbuf));
1759 LogDebug("Client \"%s:%u\" is closing connection %d ...",
1760 My_Connections[Idx].host,
1761 ng_ipaddr_tostr(&My_Connections[Idx].addr), Idx);
1762 Conn_Close(Idx, NULL, "Client closed connection", false);
1767 if( errno == EAGAIN ) return;
1768 Log(LOG_ERR, "Read error on connection %d (socket %d): %s!",
1769 Idx, My_Connections[Idx].sock, strerror(errno));
1770 Conn_Close(Idx, "Read error", "Client closed connection",
1775 if (Conn_OPTION_ISSET(&My_Connections[Idx], CONN_ZIP)) {
1776 if (!array_catb(&My_Connections[Idx].zip.rbuf, readbuf,
1779 "Could not append received data to zip input buffer (connection %d): %d bytes!",
1781 Conn_Close(Idx, "Receive buffer space exhausted", NULL,
1788 if (!array_catb( &My_Connections[Idx].rbuf, readbuf, len)) {
1790 "Could not append received data to input buffer (connection %d): %d bytes!",
1792 Conn_Close(Idx, "Receive buffer space exhausted", NULL, false );
1796 /* Update connection statistics */
1797 My_Connections[Idx].bytes_in += len;
1798 My_Connections[Idx].bps += Handle_Buffer(Idx);
1800 /* Make sure that there is still a valid client registered */
1801 c = Conn_GetClient(Idx);
1805 /* Update timestamp of last data received if this connection is
1806 * registered as a user, server or service connection. Don't update
1807 * otherwise, so users have at least Conf_PongTimeout seconds time to
1808 * register with the IRC server -- see Check_Connections().
1809 * Update "lastping", too, if time shifted backwards ... */
1810 if (Client_Type(c) == CLIENT_USER
1811 || Client_Type(c) == CLIENT_SERVER
1812 || Client_Type(c) == CLIENT_SERVICE) {
1814 if (My_Connections[Idx].lastdata != t)
1815 My_Connections[Idx].bps = 0;
1817 My_Connections[Idx].lastdata = t;
1818 if (My_Connections[Idx].lastping > t)
1819 My_Connections[Idx].lastping = t;
1822 /* Look at the data in the (read-) buffer of this connection */
1823 if (Client_Type(c) != CLIENT_SERVER
1824 && Client_Type(c) != CLIENT_UNKNOWNSERVER
1825 && Client_Type(c) != CLIENT_SERVICE
1826 && My_Connections[Idx].bps >= maxbps) {
1827 LogDebug("Throttling connection %d: BPS exceeded! (%u >= %u)",
1828 Idx, My_Connections[Idx].bps, maxbps);
1829 Conn_SetPenalty(Idx, 1);
1831 } /* Read_Request */
1835 * Handle all data in the connection read-buffer.
1837 * Data is processed until no complete command is left in the read buffer,
1838 * or MAX_COMMANDS[_SERVER|_SERVICE] commands were processed.
1839 * When a fatal error occurs, the connection is shut down.
1841 * @param Idx Index of the connection.
1842 * @returns Number of bytes processed.
1845 Handle_Buffer(CONN_ID Idx)
1848 char *ptr1, *ptr2, *first_eol;
1856 unsigned int i, maxcmd = MAX_COMMANDS, len_processed = 0;
1859 c = Conn_GetClient(Idx);
1860 starttime = time(NULL);
1864 /* Servers get special command limits that depend on the user count */
1865 switch (Client_Type(c)) {
1867 maxcmd = (int)(Client_UserCount() / 5)
1868 + MAX_COMMANDS_SERVER_MIN;
1869 /* Allow servers to handle even more commands while peering
1870 * to speed up server login and network synchronization. */
1871 if (Conn_LastPing(Idx) == 0)
1874 case CLIENT_SERVICE:
1875 maxcmd = MAX_COMMANDS_SERVICE; break;
1878 for (i=0; i < maxcmd; i++) {
1880 if (My_Connections[Idx].delaytime > starttime)
1883 /* Unpack compressed data, if compression is in use */
1884 if (Conn_OPTION_ISSET(&My_Connections[Idx], CONN_ZIP)) {
1885 /* When unzipping fails, Unzip_Buffer() shuts
1886 * down the connection itself */
1887 if (!Unzip_Buffer(Idx))
1892 if (0 == array_bytes(&My_Connections[Idx].rbuf))
1895 /* Make sure that the buffer is NULL terminated */
1896 if (!array_cat0_temporary(&My_Connections[Idx].rbuf)) {
1897 Conn_Close(Idx, NULL,
1898 "Can't allocate memory [Handle_Buffer]",
1903 /* RFC 2812, section "2.3 Messages", 5th paragraph:
1904 * "IRC messages are always lines of characters terminated
1905 * with a CR-LF (Carriage Return - Line Feed) pair [...]". */
1907 ptr = strstr(array_start(&My_Connections[Idx].rbuf), "\r\n");
1910 /* Check for non-RFC-compliant request (only CR or LF)?
1911 * Unfortunately, there are quite a few clients out there
1912 * that do this -- e. g. mIRC, BitchX, and Trillian :-( */
1913 ptr1 = strchr(array_start(&My_Connections[Idx].rbuf), '\r');
1914 ptr2 = strchr(array_start(&My_Connections[Idx].rbuf), '\n');
1916 /* Check if there is a single CR or LF _before_ the
1917 * correct CR+LF line terminator: */
1918 first_eol = ptr1 < ptr2 ? ptr1 : ptr2;
1919 if (first_eol < ptr) {
1920 /* Single CR or LF before CR+LF found */
1924 } else if (ptr1 || ptr2) {
1925 /* No CR+LF terminated command found, but single
1926 * CR or LF found ... */
1928 ptr = ptr1 < ptr2 ? ptr1 : ptr2;
1930 ptr = ptr1 ? ptr1 : ptr2;
1938 /* Complete (=line terminated) request found, handle it! */
1941 len = ptr - (char *)array_start(&My_Connections[Idx].rbuf) + delta;
1943 if (len > (COMMAND_LEN - 1)) {
1944 /* Request must not exceed 512 chars (incl. CR+LF!),
1945 * see RFC 2812. Disconnect Client if this happens. */
1947 "Request too long (connection %d): %d bytes (max. %d expected)!",
1948 Idx, array_bytes(&My_Connections[Idx].rbuf),
1950 Conn_Close(Idx, NULL, "Request too long", true);
1954 len_processed += (unsigned int)len;
1956 /* Request is empty (only '\r\n', '\r' or '\n');
1957 * delta is 2 ('\r\n') or 1 ('\r' or '\n'), see above */
1958 array_moveleft(&My_Connections[Idx].rbuf, 1, len);
1962 /* remember if stream is already compressed */
1963 old_z = My_Connections[Idx].options & CONN_ZIP;
1966 My_Connections[Idx].msg_in++;
1968 (Idx, (char *)array_start(&My_Connections[Idx].rbuf)))
1969 return 0; /* error -> connection has been closed */
1971 array_moveleft(&My_Connections[Idx].rbuf, 1, len);
1973 LogDebug("Connection %d: %d bytes left in read buffer.",
1974 Idx, array_bytes(&My_Connections[Idx].rbuf));
1977 if ((!old_z) && (My_Connections[Idx].options & CONN_ZIP) &&
1978 (array_bytes(&My_Connections[Idx].rbuf) > 0)) {
1979 /* The last command activated socket compression.
1980 * Data that was read after that needs to be copied
1981 * to the unzip buffer for decompression: */
1983 (&My_Connections[Idx].zip.rbuf,
1984 &My_Connections[Idx].rbuf)) {
1985 Conn_Close(Idx, NULL,
1986 "Can't allocate memory [Handle_Buffer]",
1991 array_trunc(&My_Connections[Idx].rbuf);
1993 ("Moved already received data (%u bytes) to uncompression buffer.",
1994 array_bytes(&My_Connections[Idx].zip.rbuf));
1998 return len_processed;
1999 } /* Handle_Buffer */
2003 * Check whether established connections are still alive or not.
2004 * If not, play PING-PONG first; and if that doesn't help either,
2005 * disconnect the respective peer.
2008 Check_Connections(void)
2014 for (i = 0; i < Pool_Size; i++) {
2015 if (My_Connections[i].sock < 0)
2018 c = Conn_GetClient(i);
2019 if (c && ((Client_Type(c) == CLIENT_USER)
2020 || (Client_Type(c) == CLIENT_SERVER)
2021 || (Client_Type(c) == CLIENT_SERVICE))) {
2022 /* connected User, Server or Service */
2023 if (My_Connections[i].lastping >
2024 My_Connections[i].lastdata) {
2025 /* We already sent a ping */
2026 if (My_Connections[i].lastping <
2027 time(NULL) - Conf_PongTimeout) {
2029 snprintf(msg, sizeof(msg),
2030 "Ping timeout: %d seconds",
2032 LogDebug("Connection %d: %s.", i, msg);
2033 Conn_Close(i, NULL, msg, true);
2035 } else if (My_Connections[i].lastdata <
2036 time(NULL) - Conf_PingTimeout) {
2037 /* We need to send a PING ... */
2038 LogDebug("Connection %d: sending PING ...", i);
2040 Conn_WriteStr(i, "PING :%s",
2041 Client_ID(Client_ThisServer()));
2044 /* The connection is not fully established yet, so
2045 * we don't do the PING-PONG game here but instead
2046 * disconnect the client after "a short time" if it's
2047 * still not registered. */
2049 if (My_Connections[i].lastdata <
2050 time(NULL) - Conf_PongTimeout) {
2052 ("Unregistered connection %d timed out ...",
2054 Conn_Close(i, NULL, "Timeout", false);
2058 } /* Check_Connections */
2062 * Check if further server links should be established.
2070 time_now = time(NULL);
2072 /* Check all configured servers */
2073 for (i = 0; i < MAX_SERVERS; i++) {
2074 if (Conf_Server[i].conn_id != NONE)
2075 continue; /* Already establishing or connected */
2076 if (!Conf_Server[i].host[0] || !Conf_Server[i].port > 0)
2077 continue; /* No host and/or port configured */
2078 if (Conf_Server[i].flags & CONF_SFLAG_DISABLED)
2079 continue; /* Disabled configuration entry */
2080 if (Conf_Server[i].lasttry > (time_now - Conf_ConnectRetry))
2081 continue; /* We have to wait a little bit ... */
2083 /* Is there already a connection in this group? */
2084 if (Conf_Server[i].group > NONE) {
2085 for (n = 0; n < MAX_SERVERS; n++) {
2088 if ((Conf_Server[n].conn_id != NONE) &&
2089 (Conf_Server[n].group == Conf_Server[i].group))
2092 if (n < MAX_SERVERS)
2096 /* Okay, try to connect now */
2098 "Preparing to establish a new server link for \"%s\" ...",
2099 Conf_Server[i].name);
2100 Conf_Server[i].lasttry = time_now;
2101 Conf_Server[i].conn_id = SERVER_WAIT;
2102 assert(Proc_GetPipeFd(&Conf_Server[i].res_stat) < 0);
2103 Resolve_Name(&Conf_Server[i].res_stat, Conf_Server[i].host,
2104 cb_Connect_to_Server);
2106 } /* Check_Servers */
2110 * Establish a new outgoing server connection.
2112 * @param Server Configuration index of the server.
2113 * @param dest Destination IP address to connect to.
2116 New_Server( int Server , ng_ipaddr_t *dest)
2118 /* Establish new server link */
2119 char ip_str[NG_INET_ADDRSTRLEN];
2120 int af_dest, res, new_sock;
2123 assert( Server > NONE );
2125 /* Make sure that the remote server hasn't re-linked to this server
2126 * asynchronously on its own */
2127 if (Conf_Server[Server].conn_id > NONE) {
2129 "Connection to \"%s\" meanwhile re-established, aborting preparation.");
2133 if (!ng_ipaddr_tostr_r(dest, ip_str)) {
2134 Log(LOG_WARNING, "New_Server: Could not convert IP to string");
2135 Conf_Server[Server].conn_id = NONE;
2139 af_dest = ng_ipaddr_af(dest);
2140 new_sock = socket(af_dest, SOCK_STREAM, 0);
2143 "Establishing connection for \"%s\" to \"%s:%d\" (%s), socket %d ...",
2144 Conf_Server[Server].name, Conf_Server[Server].host,
2145 Conf_Server[Server].port, ip_str, new_sock);
2148 Log(LOG_CRIT, "Can't create socket (af %d): %s!",
2149 af_dest, strerror(errno));
2150 Conf_Server[Server].conn_id = NONE;
2154 if (!Init_Socket(new_sock)) {
2155 Conf_Server[Server].conn_id = NONE;
2159 /* is a bind address configured? */
2160 res = ng_ipaddr_af(&Conf_Server[Server].bind_addr);
2161 /* if yes, bind now. If it fails, warn and let connect() pick a source address */
2162 if (res && bind(new_sock, (struct sockaddr *) &Conf_Server[Server].bind_addr,
2163 ng_ipaddr_salen(&Conf_Server[Server].bind_addr)))
2165 ng_ipaddr_tostr_r(&Conf_Server[Server].bind_addr, ip_str);
2166 Log(LOG_WARNING, "Can't bind socket to %s: %s!", ip_str, strerror(errno));
2168 ng_ipaddr_setport(dest, Conf_Server[Server].port);
2169 res = connect(new_sock, (struct sockaddr *) dest, ng_ipaddr_salen(dest));
2170 if(( res != 0 ) && ( errno != EINPROGRESS )) {
2171 Log( LOG_CRIT, "Can't connect socket: %s!", strerror( errno ));
2173 Conf_Server[Server].conn_id = NONE;
2177 if (!array_alloc(&My_ConnArray, sizeof(CONNECTION), (size_t)new_sock)) {
2179 "Cannot allocate memory for server connection (socket %d)",
2182 Conf_Server[Server].conn_id = NONE;
2186 if (!io_event_create( new_sock, IO_WANTWRITE, cb_connserver)) {
2187 Log(LOG_ALERT, "io_event_create(): could not add fd %d", strerror(errno));
2189 Conf_Server[Server].conn_id = NONE;
2193 My_Connections = array_start(&My_ConnArray);
2195 assert(My_Connections[new_sock].sock <= 0);
2197 Init_Conn_Struct(new_sock);
2199 ng_ipaddr_tostr_r(dest, ip_str);
2200 c = Client_NewLocal(new_sock, ip_str, CLIENT_UNKNOWNSERVER, false);
2202 Log( LOG_ALERT, "Can't establish connection: can't create client structure!" );
2204 Conf_Server[Server].conn_id = NONE;
2208 /* Conn_Close() decrements this counter again */
2209 Account_Connection();
2210 Client_SetIntroducer( c, c );
2211 Client_SetToken( c, TOKEN_OUTBOUND );
2213 /* Register connection */
2214 if (!Conf_SetServer(Server, new_sock))
2216 My_Connections[new_sock].sock = new_sock;
2217 My_Connections[new_sock].addr = *dest;
2218 My_Connections[new_sock].client = c;
2219 strlcpy( My_Connections[new_sock].host, Conf_Server[Server].host,
2220 sizeof(My_Connections[new_sock].host ));
2223 if (Conf_Server[Server].SSLConnect && !ConnSSL_PrepareConnect( &My_Connections[new_sock],
2224 &Conf_Server[Server] ))
2226 Log(LOG_ALERT, "Could not initialize SSL for outgoing connection");
2227 Conn_Close( new_sock, "Could not initialize SSL for outgoing connection", NULL, false );
2228 Init_Conn_Struct( new_sock );
2229 Conf_Server[Server].conn_id = NONE;
2233 LogDebug("Registered new connection %d on socket %d (%ld in total).",
2234 new_sock, My_Connections[new_sock].sock, NumConnections);
2235 Conn_OPTION_ADD( &My_Connections[new_sock], CONN_ISCONNECTING );
2240 * Initialize connection structure.
2242 * @param Idx Connection index.
2245 Init_Conn_Struct(CONN_ID Idx)
2247 time_t now = time(NULL);
2249 memset(&My_Connections[Idx], 0, sizeof(CONNECTION));
2250 My_Connections[Idx].sock = -1;
2251 My_Connections[Idx].signon = now;
2252 My_Connections[Idx].lastdata = now;
2253 My_Connections[Idx].lastprivmsg = now;
2254 Proc_InitStruct(&My_Connections[Idx].proc_stat);
2257 My_Connections[Idx].iconv_from = (iconv_t)(-1);
2258 My_Connections[Idx].iconv_to = (iconv_t)(-1);
2260 } /* Init_Conn_Struct */
2264 * Initialize options of a new socket.
2266 * For example, we try to set socket options SO_REUSEADDR and IPTOS_LOWDELAY.
2267 * The socket is automatically closed if a fatal error is encountered.
2269 * @param Sock Socket handle.
2270 * @returns false if socket was closed due to fatal error.
2273 Init_Socket( int Sock )
2277 if (!io_setnonblock(Sock)) {
2278 Log( LOG_CRIT, "Can't enable non-blocking mode for socket: %s!", strerror( errno ));
2283 /* Don't block this port after socket shutdown */
2285 if( setsockopt( Sock, SOL_SOCKET, SO_REUSEADDR, &value, (socklen_t)sizeof( value )) != 0 )
2287 Log( LOG_ERR, "Can't set socket option SO_REUSEADDR: %s!", strerror( errno ));
2288 /* ignore this error */
2291 /* Set type of service (TOS) */
2292 #if defined(IPPROTO_IP) && defined(IPTOS_LOWDELAY)
2293 value = IPTOS_LOWDELAY;
2294 if (setsockopt(Sock, IPPROTO_IP, IP_TOS, &value,
2295 (socklen_t) sizeof(value))) {
2296 LogDebug("Can't set socket option IP_TOS: %s!",
2298 /* ignore this error */
2300 LogDebug("IP_TOS on socket %d has been set to IPTOS_LOWDELAY.",
2309 * Read results of a resolver sub-process and try to initiate a new server
2312 * @param fd File descriptor of the pipe to the sub-process.
2313 * @param events (ignored IO specification)
2316 cb_Connect_to_Server(int fd, UNUSED short events)
2318 /* Read result of resolver sub-process from pipe and start connection */
2321 ng_ipaddr_t dest_addrs[4]; /* we can handle at most 3; but we read up to
2322 four so we can log the 'more than we can handle'
2323 condition. First result is tried immediately, rest
2324 is saved for later if needed. */
2326 LogDebug("Resolver: Got forward lookup callback on fd %d, events %d", fd, events);
2328 for (i=0; i < MAX_SERVERS; i++) {
2329 if (Proc_GetPipeFd(&Conf_Server[i].res_stat) == fd )
2333 if( i >= MAX_SERVERS) {
2334 /* Ops, no matching server found?! */
2336 LogDebug("Resolver: Got Forward Lookup callback for unknown server!?");
2340 /* Read result from pipe */
2341 len = Proc_Read(&Conf_Server[i].res_stat, dest_addrs, sizeof(dest_addrs));
2342 Proc_Close(&Conf_Server[i].res_stat);
2344 /* Error resolving hostname: reset server structure */
2345 Conf_Server[i].conn_id = NONE;
2349 assert((len % sizeof(ng_ipaddr_t)) == 0);
2351 LogDebug("Got result from resolver: %u structs (%u bytes).", len/sizeof(ng_ipaddr_t), len);
2353 memset(&Conf_Server[i].dst_addr, 0, sizeof(Conf_Server[i].dst_addr));
2354 if (len > sizeof(ng_ipaddr_t)) {
2355 /* more than one address for this hostname, remember them
2356 * in case first address is unreachable/not available */
2357 len -= sizeof(ng_ipaddr_t);
2358 if (len > sizeof(Conf_Server[i].dst_addr)) {
2359 len = sizeof(Conf_Server[i].dst_addr);
2361 "Notice: Resolver returned more IP Addresses for host than we can handle, additional addresses dropped.");
2363 memcpy(&Conf_Server[i].dst_addr, &dest_addrs[1], len);
2366 New_Server(i, dest_addrs);
2367 } /* cb_Read_Forward_Lookup */
2371 * Read results of a resolver sub-process from the pipe and update the
2372 * appropriate connection/client structure(s): hostname and/or IDENT user name.
2374 * @param r_fd File descriptor of the pipe to the sub-process.
2375 * @param events (ignored IO specification)
2378 cb_Read_Resolver_Result( int r_fd, UNUSED short events )
2385 char readbuf[HOST_LEN + 2 + CLIENT_USER_LEN];
2388 char readbuf[HOST_LEN + 1];
2391 LogDebug("Resolver: Got callback on fd %d, events %d", r_fd, events );
2392 i = Conn_GetFromProc(r_fd);
2394 /* Ops, none found? Probably the connection has already
2395 * been closed!? We'll ignore that ... */
2397 LogDebug("Resolver: Got callback for unknown connection!?");
2401 /* Read result from pipe */
2402 len = Proc_Read(&My_Connections[i].proc_stat, readbuf, sizeof readbuf -1);
2403 Proc_Close(&My_Connections[i].proc_stat);
2407 readbuf[len] = '\0';
2408 identptr = strchr(readbuf, '\n');
2409 assert(identptr != NULL);
2411 Log( LOG_CRIT, "Resolver: Got malformed result!");
2416 LogDebug("Got result from resolver: \"%s\" (%u bytes read).", readbuf, len);
2417 /* Okay, we got a complete result: this is a host name for outgoing
2418 * connections and a host name and IDENT user name (if enabled) for
2419 * incoming connections.*/
2420 assert ( My_Connections[i].sock >= 0 );
2421 /* Incoming connection. Search client ... */
2422 c = Conn_GetClient( i );
2423 assert( c != NULL );
2425 /* Only update client information of unregistered clients.
2426 * Note: user commands (e. g. WEBIRC) are always read _after_ reading
2427 * the resolver results, so we don't have to worry to override settings
2428 * from these commands here. */
2429 if(Client_Type(c) == CLIENT_UNKNOWN) {
2430 strlcpy(My_Connections[i].host, readbuf,
2431 sizeof(My_Connections[i].host));
2432 Client_SetHostname(c, readbuf);
2433 if (Conf_NoticeAuth)
2434 (void)Conn_WriteStr(i,
2435 "NOTICE AUTH :*** Found your hostname: %s",
2436 My_Connections[i].host);
2442 if ((*ptr < '0' || *ptr > '9') &&
2443 (*ptr < 'A' || *ptr > 'Z') &&
2444 (*ptr < 'a' || *ptr > 'z'))
2449 /* Erroneous IDENT reply */
2451 "Got invalid IDENT reply for connection %d! Ignored.",
2455 "IDENT lookup for connection %d: \"%s\".",
2457 Client_SetUser(c, identptr, true);
2459 if (Conf_NoticeAuth) {
2460 (void)Conn_WriteStr(i,
2461 "NOTICE AUTH :*** Got %sident response%s%s",
2462 *ptr ? "invalid " : "",
2464 *ptr ? "" : identptr);
2466 } else if(Conf_Ident) {
2467 Log(LOG_INFO, "IDENT lookup for connection %d: no result.", i);
2468 if (Conf_NoticeAuth)
2469 (void)Conn_WriteStr(i,
2470 "NOTICE AUTH :*** No ident response");
2474 if (Conf_NoticeAuth) {
2475 /* Send buffered data to the client, but break on
2476 * errors because Handle_Write() would have closed
2477 * the connection again in this case! */
2478 if (!Handle_Write(i))
2482 Class_HandleServerBans(c);
2486 LogDebug("Resolver: discarding result for already registered connection %d.", i);
2488 } /* cb_Read_Resolver_Result */
2492 * Write a "simple" (error) message to a socket.
2494 * The message is sent without using the connection write buffers, without
2495 * compression/encryption, and even without any error reporting. It is
2496 * designed for error messages of e.g. New_Connection().
2498 * @param Sock Socket handle.
2499 * @param Msg Message string to send.
2502 Simple_Message(int Sock, const char *Msg)
2504 char buf[COMMAND_LEN];
2507 assert(Sock > NONE);
2508 assert(Msg != NULL);
2510 strlcpy(buf, Msg, sizeof buf - 2);
2511 len = strlcat(buf, "\r\n", sizeof buf);
2512 if (write(Sock, buf, len) < 0) {
2513 /* Because this function most probably got called to log
2514 * an error message, any write error is ignored here to
2515 * avoid an endless loop. But casting the result of write()
2516 * to "void" doesn't satisfy the GNU C code attribute
2517 * "warn_unused_result" which is used by some versions of
2518 * glibc (e.g. 2.11.1), therefore this silly error
2519 * "handling" code here :-( */
2522 } /* Simple_Error */
2526 * Get CLIENT structure that belongs to a local connection identified by its
2527 * index number. Each connection belongs to a client by definition, so it is
2528 * not required that the caller checks for NULL return values.
2530 * @param Idx Connection index number.
2531 * @returns Pointer to CLIENT structure.
2534 Conn_GetClient( CONN_ID Idx )
2539 c = array_get(&My_ConnArray, sizeof (CONNECTION), (size_t)Idx);
2541 return c ? c->client : NULL;
2545 * Get PROC_STAT sub-process structure of a connection.
2547 * @param Idx Connection index number.
2548 * @returns PROC_STAT structure.
2551 Conn_GetProcStat(CONN_ID Idx)
2556 c = array_get(&My_ConnArray, sizeof (CONNECTION), (size_t)Idx);
2558 return &c->proc_stat;
2559 } /* Conn_GetProcStat */
2563 * Get CONN_ID from file descriptor associated to a subprocess structure.
2565 * @param fd File descriptor.
2566 * @returns CONN_ID or NONE (-1).
2569 Conn_GetFromProc(int fd)
2574 for (i = 0; i < Pool_Size; i++) {
2575 if ((My_Connections[i].sock != NONE)
2576 && (Proc_GetPipeFd(&My_Connections[i].proc_stat) == fd))
2580 } /* Conn_GetFromProc */
2586 Conn_GetAuthPing(CONN_ID Idx)
2588 assert (Idx != NONE);
2589 return My_Connections[Idx].auth_ping;
2590 } /* Conn_GetAuthPing */
2593 Conn_SetAuthPing(CONN_ID Idx, long ID)
2595 assert (Idx != NONE);
2596 My_Connections[Idx].auth_ping = ID;
2597 } /* Conn_SetAuthPing */
2605 * Get information about used SSL cipher.
2607 * @param Idx Connection index number.
2608 * @param buf Buffer for returned information text.
2609 * @param len Size of return buffer "buf".
2610 * @returns true on success, false otherwise.
2613 Conn_GetCipherInfo(CONN_ID Idx, char *buf, size_t len)
2617 assert(Idx < (int) array_length(&My_ConnArray, sizeof(CONNECTION)));
2618 return ConnSSL_GetCipherInfo(&My_Connections[Idx], buf, len);
2623 * Check if a connection is SSL-enabled or not.
2625 * @param Idx Connection index number.
2626 * @return true if connection is SSL-enabled, false otherwise.
2629 Conn_UsesSSL(CONN_ID Idx)
2633 assert(Idx < (int) array_length(&My_ConnArray, sizeof(CONNECTION)));
2634 return Conn_OPTION_ISSET(&My_Connections[Idx], CONN_SSL);
2639 Conn_GetCertFp(CONN_ID Idx)
2643 assert(Idx < (int) array_length(&My_ConnArray, sizeof(CONNECTION)));
2644 return ConnSSL_GetCertFp(&My_Connections[Idx]);
2649 Conn_SetCertFp(CONN_ID Idx, const char *fingerprint)
2653 assert(Idx < (int) array_length(&My_ConnArray, sizeof(CONNECTION)));
2654 return ConnSSL_SetCertFp(&My_Connections[Idx], fingerprint);
2658 Conn_UsesSSL(UNUSED CONN_ID Idx)
2665 Conn_GetCertFp(UNUSED CONN_ID Idx)
2672 Conn_SetCertFp(UNUSED CONN_ID Idx, UNUSED const char *fingerprint)
2682 * Dump internal state of the "connection module".
2685 Conn_DebugDump(void)
2689 Log(LOG_DEBUG, "Connection status:");
2690 for (i = 0; i < Pool_Size; i++) {
2691 if (My_Connections[i].sock == NONE)
2694 " - %d: host=%s, lastdata=%ld, lastping=%ld, delaytime=%ld, flag=%d, options=%d, bps=%d, client=%s",
2695 My_Connections[i].sock, My_Connections[i].host,
2696 My_Connections[i].lastdata, My_Connections[i].lastping,
2697 My_Connections[i].delaytime, My_Connections[i].flag,
2698 My_Connections[i].options, My_Connections[i].bps,
2699 My_Connections[i].client ? Client_ID(My_Connections[i].client) : "-");
2701 } /* Conn_DumpClients */