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);
815 SSL_WantRead(UNUSED const CONNECTION *c)
819 SSL_WantWrite(UNUSED const CONNECTION *c)
826 * "Main Loop": Loop until shutdown or restart is signalled.
828 * This function loops until a shutdown or restart of ngIRCd is signalled and
829 * calls io_dispatch() to check for readable and writable sockets every second.
830 * It checks for status changes on pending connections (e. g. when a hostname
831 * has been resolved), checks for "penalties" and timeouts, and handles the
838 unsigned int wdatalen, bytes_processed;
842 while (!NGIRCd_SignalQuit && !NGIRCd_SignalRestart) {
845 /* Check configured servers and established links */
849 /* Expire outdated class/list items */
852 /* Look for non-empty read buffers ... */
853 for (i = 0; i < Pool_Size; i++) {
854 if ((My_Connections[i].sock > NONE)
855 && (array_bytes(&My_Connections[i].rbuf) > 0)) {
856 /* ... and try to handle the received data */
857 bytes_processed = Handle_Buffer(i);
858 /* if we processed data, and there might be
859 * more commands in the input buffer, do not
860 * try to read any more data now */
861 if (bytes_processed &&
862 array_bytes(&My_Connections[i].rbuf) > 2) {
864 ("Throttling connection %d: command limit reached!",
866 Conn_SetPenalty(i, 1);
871 /* Look for non-empty write buffers ... */
872 for (i = 0; i < Pool_Size; i++) {
873 if (My_Connections[i].sock <= NONE)
876 wdatalen = (unsigned int)array_bytes(&My_Connections[i].wbuf);
879 array_bytes(&My_Connections[i].zip.wbuf) > 0)
884 if (SSL_WantRead(&My_Connections[i]))
886 io_event_add(My_Connections[i].sock,
891 /* Check from which sockets we possibly could read ... */
892 for (i = 0; i < Pool_Size; i++) {
893 if (My_Connections[i].sock <= NONE)
896 if (SSL_WantWrite(&My_Connections[i]))
897 continue; /* TLS/SSL layer needs to write data; deal with this first */
899 if (Proc_InProgress(&My_Connections[i].proc_stat)) {
900 /* Wait for completion of forked subprocess
901 * and ignore the socket in the meantime ... */
902 io_event_del(My_Connections[i].sock,
907 if (Conn_OPTION_ISSET(&My_Connections[i], CONN_ISCONNECTING))
908 /* Wait for completion of connect() ... */
911 if (My_Connections[i].delaytime > t) {
912 /* There is a "penalty time" set: ignore socket! */
913 io_event_del(My_Connections[i].sock,
918 io_event_add(My_Connections[i].sock, IO_WANTREAD);
921 /* Set the timeout for reading from the network to 1 second,
922 * which is the granularity with witch we handle "penalty
923 * times" for example.
924 * Note: tv_sec/usec are undefined(!) after io_dispatch()
925 * returns, so we have to set it before each call to it! */
929 /* Wait for activity ... */
930 i = io_dispatch(&tv);
931 if (i == -1 && errno != EINTR) {
932 Log(LOG_EMERG, "Conn_Handler(): io_dispatch(): %s!",
934 Log(LOG_ALERT, "%s exiting due to fatal errors!",
939 /* Should ngIRCd timeout when idle? */
940 if (Conf_IdleTimeout > 0 && NumConnectionsAccepted > 0
941 && idle_t > 0 && time(NULL) - idle_t >= Conf_IdleTimeout) {
942 LogDebug("Server idle timeout reached: %d second%s. Initiating shutdown ...",
944 Conf_IdleTimeout == 1 ? "" : "s");
945 NGIRCd_SignalQuit = true;
949 if (NGIRCd_SignalQuit)
950 Log(LOG_NOTICE | LOG_snotice, "Server going down NOW!");
951 else if (NGIRCd_SignalRestart)
952 Log(LOG_NOTICE | LOG_snotice, "Server restarting NOW!");
957 * Write a text string into the socket of a connection.
959 * This function automatically appends CR+LF to the string and validates that
960 * the result is a valid IRC message (oversized messages are shortened, for
961 * example). Then it calls the Conn_Write() function to do the actual sending.
963 * @param Idx Index fo the connection.
964 * @param Format Format string, see printf().
965 * @returns true on success, false otherwise.
969 Conn_WriteStr(CONN_ID Idx, const char *Format, ...)
972 Conn_WriteStr(Idx, Format, va_alist)
978 char buffer[COMMAND_LEN];
987 assert( Idx > NONE );
988 assert( Format != NULL );
991 va_start( ap, Format );
995 r = vsnprintf(buffer, COMMAND_LEN - 2, Format, ap);
996 if (r >= COMMAND_LEN - 2 || r == -1) {
998 * The string that should be written to the socket is longer
999 * than the allowed size of COMMAND_LEN bytes (including both
1000 * the CR and LF characters). This can be caused by the
1001 * IRC_WriteXXX() functions when the prefix of this server had
1002 * to be added to an already "quite long" command line which
1003 * has been received from a regular IRC client, for example.
1005 * We are not allowed to send such "oversized" messages to
1006 * other servers and clients, see RFC 2812 2.3 and 2813 3.3
1007 * ("these messages SHALL NOT exceed 512 characters in length,
1008 * counting all characters including the trailing CR-LF").
1010 * So we have a big problem here: we should send more bytes
1011 * to the network than we are allowed to and we don't know
1012 * the originator (any more). The "old" behavior of blaming
1013 * the receiver ("next hop") is a bad idea (it could be just
1014 * an other server only routing the message!), so the only
1015 * option left is to shorten the string and to hope that the
1016 * result is still somewhat useful ...
1019 * C99 states that vsnprintf() "returns the number of characters
1020 * that would have been printed if the n were unlimited"; but
1021 * according to the Linux manual page "glibc until 2.0.6 would
1022 * return -1 when the output was truncated" -- so we have to
1023 * handle both cases ...
1027 strcpy (buffer + sizeof(buffer) - strlen(CUT_TXTSUFFIX) - 2 - 1,
1032 ptr = strchr(buffer + 1, ':');
1035 message = Conn_EncodingTo(Idx, ptr);
1037 strlcpy(ptr, message, sizeof(buffer) - (ptr - buffer));
1043 Log(LOG_DEBUG, " -> connection %d: '%s'.", Idx, buffer);
1046 len = strlcat( buffer, "\r\n", sizeof( buffer ));
1047 ok = Conn_Write(Idx, buffer, len);
1048 My_Connections[Idx].msg_out++;
1052 } /* Conn_WriteStr */
1055 Conn_Password( CONN_ID Idx )
1057 assert( Idx > NONE );
1058 if (My_Connections[Idx].pwd == NULL)
1061 return My_Connections[Idx].pwd;
1062 } /* Conn_Password */
1065 Conn_SetPassword( CONN_ID Idx, const char *Pwd )
1067 assert( Idx > NONE );
1069 if (My_Connections[Idx].pwd)
1070 free(My_Connections[Idx].pwd);
1072 My_Connections[Idx].pwd = strdup(Pwd);
1073 if (My_Connections[Idx].pwd == NULL) {
1074 Log(LOG_EMERG, "Can't allocate memory! [Conn_SetPassword]");
1077 } /* Conn_SetPassword */
1080 * Append Data to the outbound write buffer of a connection.
1082 * @param Idx Index of the connection.
1083 * @param Data pointer to the data.
1084 * @param Len length of Data.
1085 * @returns true on success, false otherwise.
1088 Conn_Write( CONN_ID Idx, char *Data, size_t Len )
1091 size_t writebuf_limit = WRITEBUFFER_MAX_LEN;
1092 assert( Idx > NONE );
1093 assert( Data != NULL );
1096 /* Is the socket still open? A previous call to Conn_Write()
1097 * may have closed the connection due to a fatal error.
1098 * In this case it is sufficient to return an error, as well. */
1099 if (My_Connections[Idx].sock <= NONE) {
1100 LogDebug("Skipped write on closed socket (connection %d).", Idx);
1104 /* Make sure that there still exists a CLIENT structure associated
1105 * with this connection and check if this is a server or not: */
1106 c = Conn_GetClient(Idx);
1108 /* Servers do get special write buffer limits, so they can
1109 * generate all the messages that are required while peering. */
1110 if (Client_Type(c) == CLIENT_SERVER)
1111 writebuf_limit = WRITEBUFFER_SLINK_LEN;
1113 LogDebug("Write on socket without client (connection %d)!?", Idx);
1116 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP )) {
1118 * Zip_Buffer() does all the dirty work for us: it flushes
1119 * the (pre-)compression buffers if required and handles
1120 * all error conditions. */
1121 if (!Zip_Buffer(Idx, Data, Len))
1127 /* Uncompressed link:
1128 * Check if outbound buffer has enough space for the data. */
1129 if (array_bytes(&My_Connections[Idx].wbuf) + Len >=
1130 WRITEBUFFER_FLUSH_LEN) {
1131 /* Buffer is full, flush it. Handle_Write deals with
1132 * low-level errors, if any. */
1133 if (!Handle_Write(Idx))
1137 /* When the write buffer is still too big after flushing it,
1138 * the connection will be killed. */
1139 if (array_bytes(&My_Connections[Idx].wbuf) + Len >=
1142 "Write buffer space exhausted (connection %d, limit is %lu bytes, %lu bytes new, %lu bytes pending)",
1143 Idx, writebuf_limit, Len,
1144 (unsigned long)array_bytes(&My_Connections[Idx].wbuf));
1145 Conn_Close(Idx, "Write buffer space exhausted", NULL, false);
1149 /* Copy data to write buffer */
1150 if (!array_catb(&My_Connections[Idx].wbuf, Data, Len))
1153 My_Connections[Idx].bytes_out += Len;
1156 /* Adjust global write counter */
1164 * Shut down a connection.
1166 * @param Idx Connection index.
1167 * @param LogMsg Message to write to the log or NULL. If no LogMsg
1168 * is given, the FwdMsg is logged.
1169 * @param FwdMsg Message to forward to remote servers.
1170 * @param InformClient If true, inform the client on the connection which is
1171 * to be shut down of the reason (FwdMsg) and send
1172 * connection statistics before disconnecting it.
1175 Conn_Close( CONN_ID Idx, const char *LogMsg, const char *FwdMsg, bool InformClient )
1177 /* Close connection. Open pipes of asynchronous resolver
1178 * sub-processes are closed down. */
1184 double in_z_k, out_z_k;
1188 assert( Idx > NONE );
1190 /* Is this link already shutting down? */
1191 if( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ISCLOSING )) {
1192 /* Conn_Close() has been called recursively for this link;
1193 * probable reason: Handle_Write() failed -- see below. */
1194 LogDebug("Recursive request to close connection %d!", Idx );
1198 assert( My_Connections[Idx].sock > NONE );
1200 /* Mark link as "closing" */
1201 Conn_OPTION_ADD( &My_Connections[Idx], CONN_ISCLOSING );
1203 port = ng_ipaddr_getport(&My_Connections[Idx].addr);
1204 Log(LOG_INFO, "Shutting down connection %d (%s) with \"%s:%d\" ...", Idx,
1205 LogMsg ? LogMsg : FwdMsg, My_Connections[Idx].host, port);
1207 /* Search client, if any */
1208 c = Conn_GetClient( Idx );
1210 /* Should the client be informed? */
1213 /* Send statistics to client if registered as user: */
1214 if ((c != NULL) && (Client_Type(c) == CLIENT_USER)) {
1216 ":%s NOTICE %s :%sConnection statistics: client %.1f kb, server %.1f kb.",
1217 Client_ID(Client_ThisServer()), Client_ID(c),
1219 (double)My_Connections[Idx].bytes_in / 1024,
1220 (double)My_Connections[Idx].bytes_out / 1024);
1223 /* Send ERROR to client (see RFC 2812, section 3.1.7) */
1225 Conn_WriteStr(Idx, "ERROR :%s", FwdMsg);
1227 Conn_WriteStr(Idx, "ERROR :Closing connection");
1230 /* Try to write out the write buffer. Note: Handle_Write() eventually
1231 * removes the CLIENT structure associated with this connection if an
1232 * error occurs! So we have to re-check if there is still an valid
1233 * CLIENT structure after calling Handle_Write() ...*/
1234 (void)Handle_Write( Idx );
1236 /* Search client, if any (re-check!) */
1237 c = Conn_GetClient( Idx );
1239 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_SSL )) {
1240 LogDebug("SSL connection %d shutting down ...", Idx);
1241 ConnSSL_Free(&My_Connections[Idx]);
1244 /* Shut down socket */
1245 if (! io_close(My_Connections[Idx].sock)) {
1246 /* Oops, we can't close the socket!? This is ... ugly! */
1248 "Error closing connection %d (socket %d) with %s:%d - %s! (ignored)",
1249 Idx, My_Connections[Idx].sock, My_Connections[Idx].host,
1250 port, strerror(errno));
1253 /* Mark socket as invalid: */
1254 My_Connections[Idx].sock = NONE;
1256 /* If there is still a client, unregister it now */
1258 Client_Destroy(c, LogMsg, FwdMsg, true);
1260 /* Calculate statistics and log information */
1261 in_k = (double)My_Connections[Idx].bytes_in / 1024;
1262 out_k = (double)My_Connections[Idx].bytes_out / 1024;
1264 if (Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP)) {
1265 in_z_k = (double)My_Connections[Idx].zip.bytes_in / 1024;
1266 out_z_k = (double)My_Connections[Idx].zip.bytes_out / 1024;
1267 /* Make sure that no division by zero can occur during
1268 * the calculation of in_p and out_p: in_z_k and out_z_k
1269 * are non-zero, that's guaranteed by the protocol until
1270 * compression can be enabled. */
1275 in_p = (int)(( in_k * 100 ) / in_z_k );
1276 out_p = (int)(( out_k * 100 ) / out_z_k );
1278 "Connection %d with \"%s:%d\" closed (in: %.1fk/%.1fk/%d%%, out: %.1fk/%.1fk/%d%%).",
1279 Idx, My_Connections[Idx].host, port,
1280 in_k, in_z_k, in_p, out_k, out_z_k, out_p);
1286 "Connection %d with \"%s:%d\" closed (in: %.1fk, out: %.1fk).",
1287 Idx, My_Connections[Idx].host, port,
1291 /* Servers: Modify time of next connect attempt? */
1292 Conf_UnsetServer( Idx );
1295 /* Clean up zlib, if link was compressed */
1296 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ZIP )) {
1297 inflateEnd( &My_Connections[Idx].zip.in );
1298 deflateEnd( &My_Connections[Idx].zip.out );
1299 array_free(&My_Connections[Idx].zip.rbuf);
1300 array_free(&My_Connections[Idx].zip.wbuf);
1304 array_free(&My_Connections[Idx].rbuf);
1305 array_free(&My_Connections[Idx].wbuf);
1306 if (My_Connections[Idx].pwd != NULL)
1307 free(My_Connections[Idx].pwd);
1309 /* Clean up connection structure (=free it) */
1310 Init_Conn_Struct( Idx );
1312 assert(NumConnections > 0);
1315 LogDebug("Shutdown of connection %d completed, %ld connection%s left.",
1316 Idx, NumConnections, NumConnections != 1 ? "s" : "");
1318 idle_t = NumConnections > 0 ? 0 : time(NULL);
1323 * Get current number of connections.
1325 * @returns Number of current connections.
1330 return NumConnections;
1335 * Get number of maximum simultaneous connections.
1337 * @returns Number of maximum simultaneous connections.
1342 return NumConnectionsMax;
1343 } /* Conn_CountMax */
1347 * Get number of connections accepted since the daemon startet.
1349 * @returns Number of connections accepted.
1352 Conn_CountAccepted(void)
1354 return NumConnectionsAccepted;
1355 } /* Conn_CountAccepted */
1359 * Synchronize established connections and configured server structures
1360 * after a configuration update and store the correct connection IDs, if any.
1363 Conn_SyncServerStruct(void)
1369 for (i = 0; i < Pool_Size; i++) {
1370 if (My_Connections[i].sock == NONE)
1374 client = Conn_GetClient(i);
1375 if (!client || Client_Type(client) != CLIENT_SERVER)
1378 for (c = 0; c < MAX_SERVERS; c++) {
1379 /* Configured server? */
1380 if (!Conf_Server[c].host[0])
1383 if (strcasecmp(Conf_Server[c].name, Client_ID(client)) == 0)
1384 Conf_Server[c].conn_id = i;
1387 } /* SyncServerStruct */
1391 * Get IP address string of a connection.
1393 * @param Idx Connection index.
1394 * @return Pointer to a global buffer containing the IP address as string.
1397 Conn_GetIPAInfo(CONN_ID Idx)
1400 return ng_ipaddr_tostr(&My_Connections[Idx].addr);
1405 * Send out data of write buffer; connect new sockets.
1407 * @param Idx Connection index.
1408 * @returns true on success, false otherwise.
1411 Handle_Write( CONN_ID Idx )
1416 assert( Idx > NONE );
1417 if ( My_Connections[Idx].sock < 0 ) {
1418 LogDebug("Handle_Write() on closed socket, connection %d", Idx);
1421 assert( My_Connections[Idx].sock > NONE );
1423 wdatalen = array_bytes(&My_Connections[Idx].wbuf );
1426 if (wdatalen == 0) {
1427 /* Write buffer is empty, so we try to flush the compression
1428 * buffer and get some data to work with from there :-) */
1429 if (!Zip_Flush(Idx))
1432 /* Now the write buffer most probably has changed: */
1433 wdatalen = array_bytes(&My_Connections[Idx].wbuf);
1437 if (wdatalen == 0) {
1438 /* Still no data, fine. */
1439 io_event_del(My_Connections[Idx].sock, IO_WANTWRITE );
1445 ("Handle_Write() called for connection %d, %ld bytes pending ...",
1450 if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_SSL )) {
1451 len = ConnSSL_Write(&My_Connections[Idx], array_start(&My_Connections[Idx].wbuf), wdatalen);
1455 len = write(My_Connections[Idx].sock,
1456 array_start(&My_Connections[Idx].wbuf), wdatalen );
1459 if (errno == EAGAIN || errno == EINTR)
1462 if (!Conn_OPTION_ISSET(&My_Connections[Idx], CONN_ISCLOSING))
1464 "Write error on connection %d (socket %d): %s!",
1465 Idx, My_Connections[Idx].sock, strerror(errno));
1467 LogDebug("Recursive write error on connection %d (socket %d): %s!",
1468 Idx, My_Connections[Idx].sock, strerror(errno));
1469 Conn_Close(Idx, "Write error", NULL, false);
1473 /* move any data not yet written to beginning */
1474 array_moveleft(&My_Connections[Idx].wbuf, 1, (size_t)len);
1477 } /* Handle_Write */
1481 * Count established connections to a specific IP address.
1483 * @returns Number of established connections.
1486 Count_Connections(ng_ipaddr_t *a)
1491 for (i = 0; i < Pool_Size; i++) {
1492 if (My_Connections[i].sock <= NONE)
1494 if (ng_ipaddr_ipequal(&My_Connections[i].addr, a))
1498 } /* Count_Connections */
1502 * Initialize new client connection on a listening socket.
1504 * @param Sock Listening socket descriptor.
1505 * @param IsSSL true if this socket expects SSL-encrypted data.
1506 * @returns Accepted socket descriptor or -1 on error.
1509 New_Connection(int Sock, UNUSED bool IsSSL)
1512 struct request_info req;
1514 ng_ipaddr_t new_addr;
1515 char ip_str[NG_INET_ADDRSTRLEN];
1516 int new_sock, new_sock_len;
1520 assert(Sock > NONE);
1522 LogDebug("Accepting new connection on socket %d ...", Sock);
1524 new_sock_len = (int)sizeof(new_addr);
1525 new_sock = accept(Sock, (struct sockaddr *)&new_addr,
1526 (socklen_t *)&new_sock_len);
1528 Log(LOG_CRIT, "Can't accept connection: %s!", strerror(errno));
1531 NumConnectionsAccepted++;
1533 if (!ng_ipaddr_tostr_r(&new_addr, ip_str)) {
1534 Log(LOG_CRIT, "fd %d: Can't convert IP address!", new_sock);
1535 Simple_Message(new_sock, "ERROR :Internal Server Error");
1541 /* Validate socket using TCP Wrappers */
1542 request_init(&req, RQ_DAEMON, PACKAGE_NAME, RQ_FILE, new_sock,
1543 RQ_CLIENT_SIN, &new_addr, NULL);
1545 if (!hosts_access(&req)) {
1547 "Refused connection from %s (by TCP Wrappers)!", ip_str);
1548 Simple_Message(new_sock, "ERROR :Connection refused");
1554 if (!Init_Socket(new_sock))
1557 /* Check global connection limit */
1558 if ((Conf_MaxConnections > 0) &&
1559 (NumConnections >= (size_t) Conf_MaxConnections)) {
1560 Log(LOG_ALERT, "Can't accept connection: limit (%d) reached!",
1561 Conf_MaxConnections);
1562 Simple_Message(new_sock, "ERROR :Connection limit reached");
1567 /* Check IP-based connection limit */
1568 cnt = Count_Connections(&new_addr);
1569 if ((Conf_MaxConnectionsIP > 0) && (cnt >= Conf_MaxConnectionsIP)) {
1570 /* Access denied, too many connections from this IP address! */
1572 "Refused connection from %s: too may connections (%ld) from this IP address!",
1574 Simple_Message(new_sock,
1575 "ERROR :Connection refused, too many connections from your IP address");
1580 if (new_sock >= Pool_Size) {
1581 if (!array_alloc(&My_ConnArray, sizeof(CONNECTION),
1582 (size_t) new_sock)) {
1584 "Can't allocate memory! [New_Connection]");
1585 Simple_Message(new_sock, "ERROR: Internal error");
1589 LogDebug("Bumped connection pool to %ld items (internal: %ld items, %ld bytes)",
1590 new_sock, array_length(&My_ConnArray,
1591 sizeof(CONNECTION)), array_bytes(&My_ConnArray));
1593 /* Adjust pointer to new block */
1594 My_Connections = array_start(&My_ConnArray);
1595 while (Pool_Size <= new_sock)
1596 Init_Conn_Struct(Pool_Size++);
1599 /* register callback */
1600 if (!io_event_create(new_sock, IO_WANTREAD, cb_clientserver)) {
1602 "Can't accept connection: io_event_create failed!");
1603 Simple_Message(new_sock, "ERROR :Internal error");
1608 c = Client_NewLocal(new_sock, NULL, CLIENT_UNKNOWN, false);
1611 "Can't accept connection: can't create client structure!");
1612 Simple_Message(new_sock, "ERROR :Internal error");
1617 Init_Conn_Struct(new_sock);
1618 My_Connections[new_sock].sock = new_sock;
1619 My_Connections[new_sock].addr = new_addr;
1620 My_Connections[new_sock].client = c;
1622 /* Set initial hostname to IP address. This becomes overwritten when
1623 * the DNS lookup is enabled and succeeds, but is used otherwise. */
1624 if (ng_ipaddr_af(&new_addr) != AF_INET)
1625 snprintf(My_Connections[new_sock].host,
1626 sizeof(My_Connections[new_sock].host), "[%s]", ip_str);
1628 strlcpy(My_Connections[new_sock].host, ip_str,
1629 sizeof(My_Connections[new_sock].host));
1631 Client_SetHostname(c, My_Connections[new_sock].host);
1633 Log(LOG_INFO, "Accepted connection %d from \"%s:%d\" on socket %d.",
1634 new_sock, My_Connections[new_sock].host,
1635 ng_ipaddr_getport(&new_addr), Sock);
1636 Account_Connection();
1639 /* Delay connection initalization until SSL handshake is finished */
1642 Conn_StartLogin(new_sock);
1645 } /* New_Connection */
1649 * Finish connection initialization, start resolver subprocess.
1651 * @param Idx Connection index.
1654 Conn_StartLogin(CONN_ID Idx)
1656 int ident_sock = -1;
1660 /* Nothing to do if DNS (and resolver subprocess) is disabled */
1665 /* Should we make an IDENT request? */
1667 ident_sock = My_Connections[Idx].sock;
1670 if (Conf_NoticeAuth) {
1671 /* Send "NOTICE AUTH" messages to the client */
1674 (void)Conn_WriteStr(Idx,
1675 "NOTICE AUTH :*** Looking up your hostname and checking ident");
1678 (void)Conn_WriteStr(Idx,
1679 "NOTICE AUTH :*** Looking up your hostname");
1680 /* Send buffered data to the client, but break on errors
1681 * because Handle_Write() would have closed the connection
1682 * again in this case! */
1683 if (!Handle_Write(Idx))
1687 Resolve_Addr(&My_Connections[Idx].proc_stat, &My_Connections[Idx].addr,
1688 ident_sock, cb_Read_Resolver_Result);
1693 * Update global connection counters.
1696 Account_Connection(void)
1700 if (NumConnections > NumConnectionsMax)
1701 NumConnectionsMax = NumConnections;
1702 LogDebug("Total number of connections now %lu (max %lu).",
1703 NumConnections, NumConnectionsMax);
1704 } /* Account_Connection */
1708 * Translate socket handle into connection index.
1710 * @param Sock Socket handle.
1711 * @returns Connecion index or NONE, if no connection could be found.
1714 Socket2Index( int Sock )
1716 assert( Sock >= 0 );
1718 if( Sock >= Pool_Size || My_Connections[Sock].sock != Sock ) {
1719 /* the Connection was already closed again, likely due to
1721 LogDebug("Socket2Index: can't get connection for socket %d!", Sock);
1725 } /* Socket2Index */
1729 * Read data from the network to the read buffer. If an error occurs,
1730 * the socket of this connection will be shut down.
1732 * @param Idx Connection index.
1735 Read_Request( CONN_ID Idx )
1738 static const unsigned int maxbps = COMMAND_LEN / 2;
1739 char readbuf[READBUFFER_LEN];
1742 assert( Idx > NONE );
1743 assert( My_Connections[Idx].sock > NONE );
1746 if ((array_bytes(&My_Connections[Idx].rbuf) >= READBUFFER_LEN) ||
1747 (array_bytes(&My_Connections[Idx].zip.rbuf) >= READBUFFER_LEN))
1749 if (array_bytes(&My_Connections[Idx].rbuf) >= READBUFFER_LEN)
1752 /* Read buffer is full */
1754 "Receive buffer space exhausted (connection %d): %d bytes",
1755 Idx, array_bytes(&My_Connections[Idx].rbuf));
1756 Conn_Close(Idx, "Receive buffer space exhausted", NULL, false);
1761 if (Conn_OPTION_ISSET(&My_Connections[Idx], CONN_SSL))
1762 len = ConnSSL_Read( &My_Connections[Idx], readbuf, sizeof(readbuf));
1765 len = read(My_Connections[Idx].sock, readbuf, sizeof(readbuf));
1767 LogDebug("Client \"%s:%u\" is closing connection %d ...",
1768 My_Connections[Idx].host,
1769 ng_ipaddr_tostr(&My_Connections[Idx].addr), Idx);
1770 Conn_Close(Idx, NULL, "Client closed connection", false);
1775 if( errno == EAGAIN ) return;
1776 Log(LOG_ERR, "Read error on connection %d (socket %d): %s!",
1777 Idx, My_Connections[Idx].sock, strerror(errno));
1778 Conn_Close(Idx, "Read error", "Client closed connection",
1783 if (Conn_OPTION_ISSET(&My_Connections[Idx], CONN_ZIP)) {
1784 if (!array_catb(&My_Connections[Idx].zip.rbuf, readbuf,
1787 "Could not append received data to zip input buffer (connection %d): %d bytes!",
1789 Conn_Close(Idx, "Receive buffer space exhausted", NULL,
1796 if (!array_catb( &My_Connections[Idx].rbuf, readbuf, len)) {
1798 "Could not append received data to input buffer (connection %d): %d bytes!",
1800 Conn_Close(Idx, "Receive buffer space exhausted", NULL, false );
1804 /* Update connection statistics */
1805 My_Connections[Idx].bytes_in += len;
1806 My_Connections[Idx].bps += Handle_Buffer(Idx);
1808 /* Make sure that there is still a valid client registered */
1809 c = Conn_GetClient(Idx);
1813 /* Update timestamp of last data received if this connection is
1814 * registered as a user, server or service connection. Don't update
1815 * otherwise, so users have at least Conf_PongTimeout seconds time to
1816 * register with the IRC server -- see Check_Connections().
1817 * Update "lastping", too, if time shifted backwards ... */
1818 if (Client_Type(c) == CLIENT_USER
1819 || Client_Type(c) == CLIENT_SERVER
1820 || Client_Type(c) == CLIENT_SERVICE) {
1822 if (My_Connections[Idx].lastdata != t)
1823 My_Connections[Idx].bps = 0;
1825 My_Connections[Idx].lastdata = t;
1826 if (My_Connections[Idx].lastping > t)
1827 My_Connections[Idx].lastping = t;
1830 /* Look at the data in the (read-) buffer of this connection */
1831 if (Client_Type(c) != CLIENT_SERVER
1832 && Client_Type(c) != CLIENT_UNKNOWNSERVER
1833 && Client_Type(c) != CLIENT_SERVICE
1834 && My_Connections[Idx].bps >= maxbps) {
1835 LogDebug("Throttling connection %d: BPS exceeded! (%u >= %u)",
1836 Idx, My_Connections[Idx].bps, maxbps);
1837 Conn_SetPenalty(Idx, 1);
1839 } /* Read_Request */
1843 * Handle all data in the connection read-buffer.
1845 * Data is processed until no complete command is left in the read buffer,
1846 * or MAX_COMMANDS[_SERVER|_SERVICE] commands were processed.
1847 * When a fatal error occurs, the connection is shut down.
1849 * @param Idx Index of the connection.
1850 * @returns Number of bytes processed.
1853 Handle_Buffer(CONN_ID Idx)
1856 char *ptr1, *ptr2, *first_eol;
1864 unsigned int i, maxcmd = MAX_COMMANDS, len_processed = 0;
1867 c = Conn_GetClient(Idx);
1868 starttime = time(NULL);
1872 /* Servers get special command limits that depend on the user count */
1873 switch (Client_Type(c)) {
1875 maxcmd = (int)(Client_UserCount() / 5)
1876 + MAX_COMMANDS_SERVER_MIN;
1877 /* Allow servers to handle even more commands while peering
1878 * to speed up server login and network synchronization. */
1879 if (Conn_LastPing(Idx) == 0)
1882 case CLIENT_SERVICE:
1883 maxcmd = MAX_COMMANDS_SERVICE; break;
1886 for (i=0; i < maxcmd; i++) {
1888 if (My_Connections[Idx].delaytime > starttime)
1891 /* Unpack compressed data, if compression is in use */
1892 if (Conn_OPTION_ISSET(&My_Connections[Idx], CONN_ZIP)) {
1893 /* When unzipping fails, Unzip_Buffer() shuts
1894 * down the connection itself */
1895 if (!Unzip_Buffer(Idx))
1900 if (0 == array_bytes(&My_Connections[Idx].rbuf))
1903 /* Make sure that the buffer is NULL terminated */
1904 if (!array_cat0_temporary(&My_Connections[Idx].rbuf)) {
1905 Conn_Close(Idx, NULL,
1906 "Can't allocate memory [Handle_Buffer]",
1911 /* RFC 2812, section "2.3 Messages", 5th paragraph:
1912 * "IRC messages are always lines of characters terminated
1913 * with a CR-LF (Carriage Return - Line Feed) pair [...]". */
1915 ptr = strstr(array_start(&My_Connections[Idx].rbuf), "\r\n");
1918 /* Check for non-RFC-compliant request (only CR or LF)?
1919 * Unfortunately, there are quite a few clients out there
1920 * that do this -- e. g. mIRC, BitchX, and Trillian :-( */
1921 ptr1 = strchr(array_start(&My_Connections[Idx].rbuf), '\r');
1922 ptr2 = strchr(array_start(&My_Connections[Idx].rbuf), '\n');
1924 /* Check if there is a single CR or LF _before_ the
1925 * correct CR+LF line terminator: */
1926 first_eol = ptr1 < ptr2 ? ptr1 : ptr2;
1927 if (first_eol < ptr) {
1928 /* Single CR or LF before CR+LF found */
1932 } else if (ptr1 || ptr2) {
1933 /* No CR+LF terminated command found, but single
1934 * CR or LF found ... */
1936 ptr = ptr1 < ptr2 ? ptr1 : ptr2;
1938 ptr = ptr1 ? ptr1 : ptr2;
1946 /* Complete (=line terminated) request found, handle it! */
1949 len = ptr - (char *)array_start(&My_Connections[Idx].rbuf) + delta;
1951 if (len > (COMMAND_LEN - 1)) {
1952 /* Request must not exceed 512 chars (incl. CR+LF!),
1953 * see RFC 2812. Disconnect Client if this happens. */
1955 "Request too long (connection %d): %d bytes (max. %d expected)!",
1956 Idx, array_bytes(&My_Connections[Idx].rbuf),
1958 Conn_Close(Idx, NULL, "Request too long", true);
1962 len_processed += (unsigned int)len;
1964 /* Request is empty (only '\r\n', '\r' or '\n');
1965 * delta is 2 ('\r\n') or 1 ('\r' or '\n'), see above */
1966 array_moveleft(&My_Connections[Idx].rbuf, 1, len);
1970 /* remember if stream is already compressed */
1971 old_z = My_Connections[Idx].options & CONN_ZIP;
1974 My_Connections[Idx].msg_in++;
1976 (Idx, (char *)array_start(&My_Connections[Idx].rbuf)))
1977 return 0; /* error -> connection has been closed */
1979 array_moveleft(&My_Connections[Idx].rbuf, 1, len);
1981 LogDebug("Connection %d: %d bytes left in read buffer.",
1982 Idx, array_bytes(&My_Connections[Idx].rbuf));
1985 if ((!old_z) && (My_Connections[Idx].options & CONN_ZIP) &&
1986 (array_bytes(&My_Connections[Idx].rbuf) > 0)) {
1987 /* The last command activated socket compression.
1988 * Data that was read after that needs to be copied
1989 * to the unzip buffer for decompression: */
1991 (&My_Connections[Idx].zip.rbuf,
1992 &My_Connections[Idx].rbuf)) {
1993 Conn_Close(Idx, NULL,
1994 "Can't allocate memory [Handle_Buffer]",
1999 array_trunc(&My_Connections[Idx].rbuf);
2001 ("Moved already received data (%u bytes) to uncompression buffer.",
2002 array_bytes(&My_Connections[Idx].zip.rbuf));
2006 return len_processed;
2007 } /* Handle_Buffer */
2011 * Check whether established connections are still alive or not.
2012 * If not, play PING-PONG first; and if that doesn't help either,
2013 * disconnect the respective peer.
2016 Check_Connections(void)
2022 for (i = 0; i < Pool_Size; i++) {
2023 if (My_Connections[i].sock < 0)
2026 c = Conn_GetClient(i);
2027 if (c && ((Client_Type(c) == CLIENT_USER)
2028 || (Client_Type(c) == CLIENT_SERVER)
2029 || (Client_Type(c) == CLIENT_SERVICE))) {
2030 /* connected User, Server or Service */
2031 if (My_Connections[i].lastping >
2032 My_Connections[i].lastdata) {
2033 /* We already sent a ping */
2034 if (My_Connections[i].lastping <
2035 time(NULL) - Conf_PongTimeout) {
2037 snprintf(msg, sizeof(msg),
2038 "Ping timeout: %d seconds",
2040 LogDebug("Connection %d: %s.", i, msg);
2041 Conn_Close(i, NULL, msg, true);
2043 } else if (My_Connections[i].lastdata <
2044 time(NULL) - Conf_PingTimeout) {
2045 /* We need to send a PING ... */
2046 LogDebug("Connection %d: sending PING ...", i);
2048 Conn_WriteStr(i, "PING :%s",
2049 Client_ID(Client_ThisServer()));
2052 /* The connection is not fully established yet, so
2053 * we don't do the PING-PONG game here but instead
2054 * disconnect the client after "a short time" if it's
2055 * still not registered. */
2057 if (My_Connections[i].lastdata <
2058 time(NULL) - Conf_PongTimeout) {
2060 ("Unregistered connection %d timed out ...",
2062 Conn_Close(i, NULL, "Timeout", false);
2066 } /* Check_Connections */
2070 * Check if further server links should be established.
2078 time_now = time(NULL);
2080 /* Check all configured servers */
2081 for (i = 0; i < MAX_SERVERS; i++) {
2082 if (Conf_Server[i].conn_id != NONE)
2083 continue; /* Already establishing or connected */
2084 if (!Conf_Server[i].host[0] || !Conf_Server[i].port > 0)
2085 continue; /* No host and/or port configured */
2086 if (Conf_Server[i].flags & CONF_SFLAG_DISABLED)
2087 continue; /* Disabled configuration entry */
2088 if (Conf_Server[i].lasttry > (time_now - Conf_ConnectRetry))
2089 continue; /* We have to wait a little bit ... */
2091 /* Is there already a connection in this group? */
2092 if (Conf_Server[i].group > NONE) {
2093 for (n = 0; n < MAX_SERVERS; n++) {
2096 if ((Conf_Server[n].conn_id != NONE) &&
2097 (Conf_Server[n].group == Conf_Server[i].group))
2100 if (n < MAX_SERVERS)
2104 /* Okay, try to connect now */
2106 "Preparing to establish a new server link for \"%s\" ...",
2107 Conf_Server[i].name);
2108 Conf_Server[i].lasttry = time_now;
2109 Conf_Server[i].conn_id = SERVER_WAIT;
2110 assert(Proc_GetPipeFd(&Conf_Server[i].res_stat) < 0);
2111 Resolve_Name(&Conf_Server[i].res_stat, Conf_Server[i].host,
2112 cb_Connect_to_Server);
2114 } /* Check_Servers */
2118 * Establish a new outgoing server connection.
2120 * @param Server Configuration index of the server.
2121 * @param dest Destination IP address to connect to.
2124 New_Server( int Server , ng_ipaddr_t *dest)
2126 /* Establish new server link */
2127 char ip_str[NG_INET_ADDRSTRLEN];
2128 int af_dest, res, new_sock;
2131 assert( Server > NONE );
2133 /* Make sure that the remote server hasn't re-linked to this server
2134 * asynchronously on its own */
2135 if (Conf_Server[Server].conn_id > NONE) {
2137 "Connection to \"%s\" meanwhile re-established, aborting preparation.");
2141 if (!ng_ipaddr_tostr_r(dest, ip_str)) {
2142 Log(LOG_WARNING, "New_Server: Could not convert IP to string");
2143 Conf_Server[Server].conn_id = NONE;
2147 af_dest = ng_ipaddr_af(dest);
2148 new_sock = socket(af_dest, SOCK_STREAM, 0);
2151 "Establishing connection for \"%s\" to \"%s:%d\" (%s), socket %d ...",
2152 Conf_Server[Server].name, Conf_Server[Server].host,
2153 Conf_Server[Server].port, ip_str, new_sock);
2156 Log(LOG_CRIT, "Can't create socket (af %d): %s!",
2157 af_dest, strerror(errno));
2158 Conf_Server[Server].conn_id = NONE;
2162 if (!Init_Socket(new_sock)) {
2163 Conf_Server[Server].conn_id = NONE;
2167 /* is a bind address configured? */
2168 res = ng_ipaddr_af(&Conf_Server[Server].bind_addr);
2169 /* if yes, bind now. If it fails, warn and let connect() pick a source address */
2170 if (res && bind(new_sock, (struct sockaddr *) &Conf_Server[Server].bind_addr,
2171 ng_ipaddr_salen(&Conf_Server[Server].bind_addr)))
2173 ng_ipaddr_tostr_r(&Conf_Server[Server].bind_addr, ip_str);
2174 Log(LOG_WARNING, "Can't bind socket to %s: %s!", ip_str, strerror(errno));
2176 ng_ipaddr_setport(dest, Conf_Server[Server].port);
2177 res = connect(new_sock, (struct sockaddr *) dest, ng_ipaddr_salen(dest));
2178 if(( res != 0 ) && ( errno != EINPROGRESS )) {
2179 Log( LOG_CRIT, "Can't connect socket: %s!", strerror( errno ));
2181 Conf_Server[Server].conn_id = NONE;
2185 if (!array_alloc(&My_ConnArray, sizeof(CONNECTION), (size_t)new_sock)) {
2187 "Cannot allocate memory for server connection (socket %d)",
2190 Conf_Server[Server].conn_id = NONE;
2194 if (!io_event_create( new_sock, IO_WANTWRITE, cb_connserver)) {
2195 Log(LOG_ALERT, "io_event_create(): could not add fd %d", strerror(errno));
2197 Conf_Server[Server].conn_id = NONE;
2201 My_Connections = array_start(&My_ConnArray);
2203 assert(My_Connections[new_sock].sock <= 0);
2205 Init_Conn_Struct(new_sock);
2207 ng_ipaddr_tostr_r(dest, ip_str);
2208 c = Client_NewLocal(new_sock, ip_str, CLIENT_UNKNOWNSERVER, false);
2210 Log( LOG_ALERT, "Can't establish connection: can't create client structure!" );
2212 Conf_Server[Server].conn_id = NONE;
2216 /* Conn_Close() decrements this counter again */
2217 Account_Connection();
2218 Client_SetIntroducer( c, c );
2219 Client_SetToken( c, TOKEN_OUTBOUND );
2221 /* Register connection */
2222 if (!Conf_SetServer(Server, new_sock))
2224 My_Connections[new_sock].sock = new_sock;
2225 My_Connections[new_sock].addr = *dest;
2226 My_Connections[new_sock].client = c;
2227 strlcpy( My_Connections[new_sock].host, Conf_Server[Server].host,
2228 sizeof(My_Connections[new_sock].host ));
2231 if (Conf_Server[Server].SSLConnect && !ConnSSL_PrepareConnect( &My_Connections[new_sock],
2232 &Conf_Server[Server] ))
2234 Log(LOG_ALERT, "Could not initialize SSL for outgoing connection");
2235 Conn_Close( new_sock, "Could not initialize SSL for outgoing connection", NULL, false );
2236 Init_Conn_Struct( new_sock );
2237 Conf_Server[Server].conn_id = NONE;
2241 LogDebug("Registered new connection %d on socket %d (%ld in total).",
2242 new_sock, My_Connections[new_sock].sock, NumConnections);
2243 Conn_OPTION_ADD( &My_Connections[new_sock], CONN_ISCONNECTING );
2248 * Initialize connection structure.
2250 * @param Idx Connection index.
2253 Init_Conn_Struct(CONN_ID Idx)
2255 time_t now = time(NULL);
2257 memset(&My_Connections[Idx], 0, sizeof(CONNECTION));
2258 My_Connections[Idx].sock = -1;
2259 My_Connections[Idx].signon = now;
2260 My_Connections[Idx].lastdata = now;
2261 My_Connections[Idx].lastprivmsg = now;
2262 Proc_InitStruct(&My_Connections[Idx].proc_stat);
2265 My_Connections[Idx].iconv_from = (iconv_t)(-1);
2266 My_Connections[Idx].iconv_to = (iconv_t)(-1);
2268 } /* Init_Conn_Struct */
2272 * Initialize options of a new socket.
2274 * For example, we try to set socket options SO_REUSEADDR and IPTOS_LOWDELAY.
2275 * The socket is automatically closed if a fatal error is encountered.
2277 * @param Sock Socket handle.
2278 * @returns false if socket was closed due to fatal error.
2281 Init_Socket( int Sock )
2285 if (!io_setnonblock(Sock)) {
2286 Log( LOG_CRIT, "Can't enable non-blocking mode for socket: %s!", strerror( errno ));
2291 /* Don't block this port after socket shutdown */
2293 if( setsockopt( Sock, SOL_SOCKET, SO_REUSEADDR, &value, (socklen_t)sizeof( value )) != 0 )
2295 Log( LOG_ERR, "Can't set socket option SO_REUSEADDR: %s!", strerror( errno ));
2296 /* ignore this error */
2299 /* Set type of service (TOS) */
2300 #if defined(IPPROTO_IP) && defined(IPTOS_LOWDELAY)
2301 value = IPTOS_LOWDELAY;
2302 if (setsockopt(Sock, IPPROTO_IP, IP_TOS, &value,
2303 (socklen_t) sizeof(value))) {
2304 LogDebug("Can't set socket option IP_TOS: %s!",
2306 /* ignore this error */
2308 LogDebug("IP_TOS on socket %d has been set to IPTOS_LOWDELAY.",
2317 * Read results of a resolver sub-process and try to initiate a new server
2320 * @param fd File descriptor of the pipe to the sub-process.
2321 * @param events (ignored IO specification)
2324 cb_Connect_to_Server(int fd, UNUSED short events)
2326 /* Read result of resolver sub-process from pipe and start connection */
2329 ng_ipaddr_t dest_addrs[4]; /* we can handle at most 3; but we read up to
2330 four so we can log the 'more than we can handle'
2331 condition. First result is tried immediately, rest
2332 is saved for later if needed. */
2334 LogDebug("Resolver: Got forward lookup callback on fd %d, events %d", fd, events);
2336 for (i=0; i < MAX_SERVERS; i++) {
2337 if (Proc_GetPipeFd(&Conf_Server[i].res_stat) == fd )
2341 if( i >= MAX_SERVERS) {
2342 /* Ops, no matching server found?! */
2344 LogDebug("Resolver: Got Forward Lookup callback for unknown server!?");
2348 /* Read result from pipe */
2349 len = Proc_Read(&Conf_Server[i].res_stat, dest_addrs, sizeof(dest_addrs));
2350 Proc_Close(&Conf_Server[i].res_stat);
2352 /* Error resolving hostname: reset server structure */
2353 Conf_Server[i].conn_id = NONE;
2357 assert((len % sizeof(ng_ipaddr_t)) == 0);
2359 LogDebug("Got result from resolver: %u structs (%u bytes).", len/sizeof(ng_ipaddr_t), len);
2361 memset(&Conf_Server[i].dst_addr, 0, sizeof(Conf_Server[i].dst_addr));
2362 if (len > sizeof(ng_ipaddr_t)) {
2363 /* more than one address for this hostname, remember them
2364 * in case first address is unreachable/not available */
2365 len -= sizeof(ng_ipaddr_t);
2366 if (len > sizeof(Conf_Server[i].dst_addr)) {
2367 len = sizeof(Conf_Server[i].dst_addr);
2369 "Notice: Resolver returned more IP Addresses for host than we can handle, additional addresses dropped.");
2371 memcpy(&Conf_Server[i].dst_addr, &dest_addrs[1], len);
2374 New_Server(i, dest_addrs);
2375 } /* cb_Read_Forward_Lookup */
2379 * Read results of a resolver sub-process from the pipe and update the
2380 * appropriate connection/client structure(s): hostname and/or IDENT user name.
2382 * @param r_fd File descriptor of the pipe to the sub-process.
2383 * @param events (ignored IO specification)
2386 cb_Read_Resolver_Result( int r_fd, UNUSED short events )
2393 char readbuf[HOST_LEN + 2 + CLIENT_USER_LEN];
2396 char readbuf[HOST_LEN + 1];
2399 LogDebug("Resolver: Got callback on fd %d, events %d", r_fd, events );
2400 i = Conn_GetFromProc(r_fd);
2402 /* Ops, none found? Probably the connection has already
2403 * been closed!? We'll ignore that ... */
2405 LogDebug("Resolver: Got callback for unknown connection!?");
2409 /* Read result from pipe */
2410 len = Proc_Read(&My_Connections[i].proc_stat, readbuf, sizeof readbuf -1);
2411 Proc_Close(&My_Connections[i].proc_stat);
2415 readbuf[len] = '\0';
2416 identptr = strchr(readbuf, '\n');
2417 assert(identptr != NULL);
2419 Log( LOG_CRIT, "Resolver: Got malformed result!");
2424 LogDebug("Got result from resolver: \"%s\" (%u bytes read).", readbuf, len);
2425 /* Okay, we got a complete result: this is a host name for outgoing
2426 * connections and a host name and IDENT user name (if enabled) for
2427 * incoming connections.*/
2428 assert ( My_Connections[i].sock >= 0 );
2429 /* Incoming connection. Search client ... */
2430 c = Conn_GetClient( i );
2431 assert( c != NULL );
2433 /* Only update client information of unregistered clients.
2434 * Note: user commands (e. g. WEBIRC) are always read _after_ reading
2435 * the resolver results, so we don't have to worry to override settings
2436 * from these commands here. */
2437 if(Client_Type(c) == CLIENT_UNKNOWN) {
2438 strlcpy(My_Connections[i].host, readbuf,
2439 sizeof(My_Connections[i].host));
2440 Client_SetHostname(c, readbuf);
2441 if (Conf_NoticeAuth)
2442 (void)Conn_WriteStr(i,
2443 "NOTICE AUTH :*** Found your hostname: %s",
2444 My_Connections[i].host);
2450 if ((*ptr < '0' || *ptr > '9') &&
2451 (*ptr < 'A' || *ptr > 'Z') &&
2452 (*ptr < 'a' || *ptr > 'z'))
2457 /* Erroneous IDENT reply */
2459 "Got invalid IDENT reply for connection %d! Ignored.",
2463 "IDENT lookup for connection %d: \"%s\".",
2465 Client_SetUser(c, identptr, true);
2467 if (Conf_NoticeAuth) {
2468 (void)Conn_WriteStr(i,
2469 "NOTICE AUTH :*** Got %sident response%s%s",
2470 *ptr ? "invalid " : "",
2472 *ptr ? "" : identptr);
2474 } else if(Conf_Ident) {
2475 Log(LOG_INFO, "IDENT lookup for connection %d: no result.", i);
2476 if (Conf_NoticeAuth)
2477 (void)Conn_WriteStr(i,
2478 "NOTICE AUTH :*** No ident response");
2482 if (Conf_NoticeAuth) {
2483 /* Send buffered data to the client, but break on
2484 * errors because Handle_Write() would have closed
2485 * the connection again in this case! */
2486 if (!Handle_Write(i))
2490 Class_HandleServerBans(c);
2494 LogDebug("Resolver: discarding result for already registered connection %d.", i);
2496 } /* cb_Read_Resolver_Result */
2500 * Write a "simple" (error) message to a socket.
2502 * The message is sent without using the connection write buffers, without
2503 * compression/encryption, and even without any error reporting. It is
2504 * designed for error messages of e.g. New_Connection().
2506 * @param Sock Socket handle.
2507 * @param Msg Message string to send.
2510 Simple_Message(int Sock, const char *Msg)
2512 char buf[COMMAND_LEN];
2515 assert(Sock > NONE);
2516 assert(Msg != NULL);
2518 strlcpy(buf, Msg, sizeof buf - 2);
2519 len = strlcat(buf, "\r\n", sizeof buf);
2520 if (write(Sock, buf, len) < 0) {
2521 /* Because this function most probably got called to log
2522 * an error message, any write error is ignored here to
2523 * avoid an endless loop. But casting the result of write()
2524 * to "void" doesn't satisfy the GNU C code attribute
2525 * "warn_unused_result" which is used by some versions of
2526 * glibc (e.g. 2.11.1), therefore this silly error
2527 * "handling" code here :-( */
2530 } /* Simple_Error */
2534 * Get CLIENT structure that belongs to a local connection identified by its
2535 * index number. Each connection belongs to a client by definition, so it is
2536 * not required that the caller checks for NULL return values.
2538 * @param Idx Connection index number.
2539 * @returns Pointer to CLIENT structure.
2542 Conn_GetClient( CONN_ID Idx )
2547 c = array_get(&My_ConnArray, sizeof (CONNECTION), (size_t)Idx);
2549 return c ? c->client : NULL;
2553 * Get PROC_STAT sub-process structure of a connection.
2555 * @param Idx Connection index number.
2556 * @returns PROC_STAT structure.
2559 Conn_GetProcStat(CONN_ID Idx)
2564 c = array_get(&My_ConnArray, sizeof (CONNECTION), (size_t)Idx);
2566 return &c->proc_stat;
2567 } /* Conn_GetProcStat */
2571 * Get CONN_ID from file descriptor associated to a subprocess structure.
2573 * @param fd File descriptor.
2574 * @returns CONN_ID or NONE (-1).
2577 Conn_GetFromProc(int fd)
2582 for (i = 0; i < Pool_Size; i++) {
2583 if ((My_Connections[i].sock != NONE)
2584 && (Proc_GetPipeFd(&My_Connections[i].proc_stat) == fd))
2588 } /* Conn_GetFromProc */
2594 Conn_GetAuthPing(CONN_ID Idx)
2596 assert (Idx != NONE);
2597 return My_Connections[Idx].auth_ping;
2598 } /* Conn_GetAuthPing */
2601 Conn_SetAuthPing(CONN_ID Idx, long ID)
2603 assert (Idx != NONE);
2604 My_Connections[Idx].auth_ping = ID;
2605 } /* Conn_SetAuthPing */
2613 * Get information about used SSL cipher.
2615 * @param Idx Connection index number.
2616 * @param buf Buffer for returned information text.
2617 * @param len Size of return buffer "buf".
2618 * @returns true on success, false otherwise.
2621 Conn_GetCipherInfo(CONN_ID Idx, char *buf, size_t len)
2625 assert(Idx < (int) array_length(&My_ConnArray, sizeof(CONNECTION)));
2626 return ConnSSL_GetCipherInfo(&My_Connections[Idx], buf, len);
2631 * Check if a connection is SSL-enabled or not.
2633 * @param Idx Connection index number.
2634 * @return true if connection is SSL-enabled, false otherwise.
2637 Conn_UsesSSL(CONN_ID Idx)
2641 assert(Idx < (int) array_length(&My_ConnArray, sizeof(CONNECTION)));
2642 return Conn_OPTION_ISSET(&My_Connections[Idx], CONN_SSL);
2647 Conn_GetCertFp(CONN_ID Idx)
2651 assert(Idx < (int) array_length(&My_ConnArray, sizeof(CONNECTION)));
2652 return ConnSSL_GetCertFp(&My_Connections[Idx]);
2657 Conn_SetCertFp(CONN_ID Idx, const char *fingerprint)
2661 assert(Idx < (int) array_length(&My_ConnArray, sizeof(CONNECTION)));
2662 return ConnSSL_SetCertFp(&My_Connections[Idx], fingerprint);
2666 Conn_UsesSSL(UNUSED CONN_ID Idx)
2673 Conn_GetCertFp(UNUSED CONN_ID Idx)
2680 Conn_SetCertFp(UNUSED CONN_ID Idx, UNUSED const char *fingerprint)
2690 * Dump internal state of the "connection module".
2693 Conn_DebugDump(void)
2697 Log(LOG_DEBUG, "Connection status:");
2698 for (i = 0; i < Pool_Size; i++) {
2699 if (My_Connections[i].sock == NONE)
2702 " - %d: host=%s, lastdata=%ld, lastping=%ld, delaytime=%ld, flag=%d, options=%d, bps=%d, client=%s",
2703 My_Connections[i].sock, My_Connections[i].host,
2704 My_Connections[i].lastdata, My_Connections[i].lastping,
2705 My_Connections[i].delaytime, My_Connections[i].flag,
2706 My_Connections[i].options, My_Connections[i].bps,
2707 My_Connections[i].client ? Client_ID(My_Connections[i].client) : "-");
2709 } /* Conn_DumpClients */