/*
* ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001-2011 Alexander Barton (alex@barton.de) and Contributors.
+ * Copyright (c)2001-2014 Alexander Barton (alex@barton.de) and Contributors.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#define CONN_MODULE
#include "portab.h"
-#include "conf-ssl.h"
-#include "io.h"
/**
* @file
* Connection management
*/
-#include "imp.h"
#include <assert.h>
#ifdef PROTOTYPES
# include <stdarg.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
+#include <strings.h>
#include <sys/socket.h>
-#include <sys/time.h>
+#include <sys/stat.h>
#include <sys/types.h>
#include <time.h>
#include <netinet/in.h>
# include <netinet/ip.h>
#endif
-#ifdef HAVE_STDINT_H
-# include <stdint.h> /* e.g. for Mac OS X */
-#endif
-
#ifdef TCPWRAP
# include <tcpd.h> /* for TCP Wrappers */
#endif
-#include "array.h"
-#include "defines.h"
-
-#include "exp.h"
#include "conn.h"
-#include "imp.h"
#include "ngircd.h"
-#include "array.h"
-#include "client.h"
#include "class.h"
-#include "conf.h"
+#ifdef ICONV
+# include "conn-encoding.h"
+#endif
#include "conn-ssl.h"
#include "conn-zip.h"
#include "conn-func.h"
+#include "io.h"
#include "log.h"
#include "ng_ipaddr.h"
#include "parse.h"
#include "resolve.h"
-#include "tool.h"
-
-#include "exp.h"
-
-#define SERVER_WAIT (NONE - 1)
+#define SERVER_WAIT (NONE - 1) /** "Wait for outgoing connection" flag */
-#define MAX_COMMANDS 3
-#define MAX_COMMANDS_SERVER 10
-#define MAX_COMMANDS_SERVICE MAX_COMMANDS_SERVER
+#define MAX_COMMANDS 3 /** Max. commands per loop for users */
+#define MAX_COMMANDS_SERVER_MIN 10 /** Min. commands per loop for servers */
+#define MAX_COMMANDS_SERVICE 10 /** Max. commands per loop for services */
+#define SD_LISTEN_FDS_START 3 /** systemd(8) socket activation offset */
static bool Handle_Write PARAMS(( CONN_ID Idx ));
static bool Conn_Write PARAMS(( CONN_ID Idx, char *Data, size_t Len ));
-static int New_Connection PARAMS(( int Sock ));
+static int New_Connection PARAMS(( int Sock, bool IsSSL ));
static CONN_ID Socket2Index PARAMS(( int Sock ));
static void Read_Request PARAMS(( CONN_ID Idx ));
static unsigned int Handle_Buffer PARAMS(( CONN_ID Idx ));
static int NewListener PARAMS(( const char *listen_addr, UINT16 Port ));
static void Account_Connection PARAMS((void));
-
static array My_Listeners;
static array My_ConnArray;
static size_t NumConnections, NumConnectionsMax, NumConnectionsAccepted;
#ifdef SSL_SUPPORT
extern struct SSLOptions Conf_SSLOptions;
+static bool SSL_WantRead PARAMS((const CONNECTION *c));
+static bool SSL_WantWrite PARAMS((const CONNECTION *c));
+static void cb_listen_ssl PARAMS((int sock, short irrelevant));
static void cb_connserver_login_ssl PARAMS((int sock, short what));
static void cb_clientserver_ssl PARAMS((int sock, short what));
#endif
static void cb_Connect_to_Server PARAMS((int sock, UNUSED short what));
static void cb_clientserver PARAMS((int sock, short what));
+time_t idle_t = 0;
/**
- * IO callback for listening sockets: handle new connections. This callback
- * gets called when a new non-SSL connection should be accepted.
+ * Get number of sockets available from systemd(8).
*
- * @param sock Socket descriptor.
- * @param irrelevant (ignored IO specification)
+ * ngIRCd needs to implement its own sd_listen_fds(3) function and can't
+ * use the one provided by systemd itself, because the sockets will be
+ * used in a forked child process with a new PID, and this would trigger
+ * an error in the standard implementation.
+ *
+ * @return Number of sockets available, -1 if sockets have already been
+ * initialized, or 0 when no sockets have been passed.
*/
-static void
-cb_listen(int sock, short irrelevant)
+static int
+my_sd_listen_fds(void)
{
- (void) irrelevant;
- (void) New_Connection(sock);
-}
+ const char *e;
+ int count;
+
+ /* Check if LISTEN_PID exists; but we ignore the result, because
+ * normally ngircd forks a child before checking this, and therefore
+ * the PID set in the environment is always wrong ... */
+ e = getenv("LISTEN_PID");
+ if (!e || !*e)
+ return 0;
+
+ e = getenv("LISTEN_FDS");
+ if (!e || !*e)
+ return -1;
+ count = atoi(e);
+#ifdef HAVE_UNSETENV
+ unsetenv("LISTEN_FDS");
+#endif
+ return count;
+}
-#ifdef SSL_SUPPORT
/**
- * IO callback for listening SSL sockets: handle new connections. This callback
- * gets called when a new SSL-enabled connection should be accepted.
+ * IO callback for listening sockets: handle new connections. This callback
+ * gets called when a new non-SSL connection should be accepted.
*
* @param sock Socket descriptor.
* @param irrelevant (ignored IO specification)
*/
static void
-cb_listen_ssl(int sock, short irrelevant)
+cb_listen(int sock, short irrelevant)
{
- int fd;
-
(void) irrelevant;
- fd = New_Connection(sock);
- if (fd < 0)
- return;
- io_event_setcb(My_Connections[fd].sock, cb_clientserver_ssl);
+ (void) New_Connection(sock, false);
}
-#endif
-
/**
* IO callback for new outgoing non-SSL server connections.
if (server < 0) {
Log(LOG_ERR, "Connection on socket %d to \"%s\" aborted!",
sock, My_Connections[idx].host);
- Conn_Close(idx, "Connection aborted!", NULL, false);
+ Conn_Close(idx, "Connection aborted", NULL, false);
return;
}
My_Connections[idx].host, Conf_Server[server].port,
idx, strerror(err));
- Conn_Close(idx, "Can't connect!", NULL, false);
+ Conn_Close(idx, "Can't connect", NULL, false);
if (ng_ipaddr_af(&Conf_Server[server].dst_addr[0])) {
/* more addresses to try... */
server_login(idx);
}
-
/**
* Login to a remote server.
*
io_event_add( My_Connections[idx].sock, IO_WANTREAD|IO_WANTWRITE);
/* Send PASS and SERVER command to peer */
- Conn_WriteStr( idx, "PASS %s %s", Conf_Server[Conf_GetServer( idx )].pwd_out, NGIRCd_ProtoID );
- Conn_WriteStr( idx, "SERVER %s :%s", Conf_ServerName, Conf_ServerInfo );
+ Conn_WriteStr(idx, "PASS %s %s",
+ Conf_Server[Conf_GetServer( idx )].pwd_out, NGIRCd_ProtoID);
+ Conn_WriteStr(idx, "SERVER %s :%s",
+ Conf_ServerName, Conf_ServerInfo);
}
-
-#ifdef SSL_SUPPORT
-/**
- * IO callback for new outgoing SSL-enabled server connections.
- *
- * @param sock Socket descriptor.
- * @param unused (ignored IO specification)
- */
-static void
-cb_connserver_login_ssl(int sock, short unused)
-{
- CONN_ID idx = Socket2Index(sock);
-
- assert(idx >= 0);
- if (idx < 0) {
- io_close(sock);
- return;
- }
- (void) unused;
- switch (ConnSSL_Connect( &My_Connections[idx])) {
- case 1: break;
- case 0: LogDebug("ConnSSL_Connect: not ready");
- return;
- case -1:
- Log(LOG_ERR, "SSL connection on socket %d failed!", sock);
- Conn_Close(idx, "Can't connect!", NULL, false);
- return;
- }
-
- Log( LOG_INFO, "SSL connection %d with \"%s:%d\" established.", idx,
- My_Connections[idx].host, Conf_Server[Conf_GetServer( idx )].port );
-
- server_login(idx);
-}
-#endif
-
-
/**
* IO callback for established non-SSL client and server connections.
*
Handle_Write(idx);
}
-
-#ifdef SSL_SUPPORT
-/**
- * IO callback for established SSL-enabled client and server connections.
- *
- * @param sock Socket descriptor.
- * @param what IO specification (IO_WANTREAD/IO_WANTWRITE/...).
- */
-static void
-cb_clientserver_ssl(int sock, short what)
-{
- CONN_ID idx = Socket2Index(sock);
-
- assert(idx >= 0);
-
- if (idx < 0) {
- io_close(sock);
- return;
- }
-
- switch (ConnSSL_Accept(&My_Connections[idx])) {
- case 1:
- break; /* OK */
- case 0:
- return; /* EAGAIN: callback will be invoked again by IO layer */
- default:
- Conn_Close(idx, "SSL accept error, closing socket", "SSL accept error", false);
- return;
- }
- if (what & IO_WANTREAD)
- Read_Request(idx);
-
- if (what & IO_WANTWRITE)
- Handle_Write(idx);
-
- io_event_setcb(sock, cb_clientserver); /* SSL handshake completed */
-}
-#endif
-
-
/**
- * Initialize connecion module.
+ * Initialize connection module.
*/
GLOBAL void
Conn_Init( void )
{
CONN_ID i;
- /* Speicher fuer Verbindungs-Pool anfordern */
Pool_Size = CONNECTION_POOL;
if ((Conf_MaxConnections > 0) &&
(Pool_Size > Conf_MaxConnections))
Init_Conn_Struct(i);
} /* Conn_Init */
-
/**
* Clean up connection module.
*/
io_library_shutdown();
} /* Conn_Exit */
-
/**
* Close all sockets (file descriptors) of open connections.
* This is useful in forked child processes, for example, to make sure that
}
}
-
/**
* Initialize listening ports.
*
* @returns Number of listening sockets created.
*/
static unsigned int
-ports_initlisteners(array *a, const char *listen_addr, void (*func)(int,short))
+Init_Listeners(array *a, const char *listen_addr, void (*func)(int,short))
{
unsigned int created = 0;
size_t len;
continue;
}
if (!io_event_create( fd, IO_WANTREAD, func )) {
- Log( LOG_ERR, "io_event_create(): Could not add listening fd %d (port %u): %s!",
- fd, (unsigned int) *port, strerror(errno));
+ Log(LOG_ERR,
+ "io_event_create(): Can't add fd %d (port %u): %s!",
+ fd, (unsigned int) *port, strerror(errno));
close(fd);
port++;
continue;
return created;
}
-
/**
* Initialize all listening sockets.
*
{
/* Initialize ports on which the server should accept connections */
unsigned int created = 0;
- char *copy, *listen_addr;
+ char *af_str, *copy, *listen_addr;
+ int count, fd, i, addr_len;
+ ng_ipaddr_t addr;
assert(Conf_ListenAddress);
+ count = my_sd_listen_fds();
+ if (count < 0) {
+ Log(LOG_INFO,
+ "Not re-initializing listening sockets of systemd(8) ...");
+ return 0;
+ }
+ if (count > 0) {
+ /* systemd(8) passed sockets to us, so don't try to initialize
+ * listening sockets on our own but use the passed ones */
+ LogDebug("Initializing %d systemd sockets ...", count);
+ for (i = 0; i < count; i++) {
+ fd = SD_LISTEN_FDS_START + i;
+ addr_len = (int)sizeof(addr);
+ getsockname(fd, (struct sockaddr *)&addr,
+ (socklen_t*)&addr_len);
+#ifdef WANT_IPV6
+ if (addr.sin4.sin_family != AF_INET
+ && addr.sin4.sin_family != AF_INET6)
+#else
+ if (addr.sin4.sin_family != AF_INET)
+#endif
+ {
+ /* Socket is of unsupported type! For example,
+ * systemd passed in an IPv6 socket but ngIRCd
+ * isn't compiled with IPv6 support. */
+ switch (addr.sin4.sin_family)
+ {
+ case AF_UNSPEC: af_str = "AF_UNSPEC"; break;
+ case AF_UNIX: af_str = "AF_UNIX"; break;
+ case AF_INET: af_str = "AF_INET"; break;
+#ifdef AF_INET6
+ case AF_INET6: af_str = "AF_INET6"; break;
+#endif
+#ifdef AF_NETLINK
+ case AF_NETLINK: af_str = "AF_NETLINK"; break;
+#endif
+ default: af_str = "unknown"; break;
+ }
+ Log(LOG_CRIT,
+ "Socket %d is of unsupported type \"%s\" (%d), have to ignore it!",
+ fd, af_str, addr.sin4.sin_family);
+ close(fd);
+ continue;
+ }
+
+ Init_Socket(fd);
+ if (!io_event_create(fd, IO_WANTREAD, cb_listen)) {
+ Log(LOG_ERR,
+ "io_event_create(): Can't add fd %d: %s!",
+ fd, strerror(errno));
+ continue;
+ }
+ Log(LOG_INFO,
+ "Initialized socket %d from systemd(8): %s:%d.", fd,
+ ng_ipaddr_tostr(&addr), ng_ipaddr_getport(&addr));
+ created++;
+ }
+ return created;
+ }
+
+ /* not using systemd socket activation, initialize listening sockets: */
+
/* can't use Conf_ListenAddress directly, see below */
copy = strdup(Conf_ListenAddress);
if (!copy) {
- Log(LOG_CRIT, "Cannot copy %s: %s", Conf_ListenAddress, strerror(errno));
+ Log(LOG_CRIT, "Cannot copy %s: %s", Conf_ListenAddress,
+ strerror(errno));
return 0;
}
listen_addr = strtok(copy, ",");
while (listen_addr) {
ngt_TrimStr(listen_addr);
if (*listen_addr) {
- created += ports_initlisteners(&Conf_ListenPorts, listen_addr, cb_listen);
+ created += Init_Listeners(&Conf_ListenPorts,
+ listen_addr, cb_listen);
#ifdef SSL_SUPPORT
- created += ports_initlisteners(&Conf_SSLOptions.ListenPorts, listen_addr, cb_listen_ssl);
+ created += Init_Listeners(&Conf_SSLOptions.ListenPorts,
+ listen_addr, cb_listen_ssl);
#endif
}
return created;
} /* Conn_InitListeners */
-
/**
* Shut down all listening sockets.
*/
int *fd;
size_t arraylen;
+ /* Get number of listening sockets to shut down. There can be none
+ * if ngIRCd has been "socket activated" by systemd. */
arraylen = array_length(&My_Listeners, sizeof (int));
+ if (arraylen < 1)
+ return;
+
Log(LOG_INFO,
"Shutting down all listening sockets (%d total) ...", arraylen);
fd = array_start(&My_Listeners);
array_free(&My_Listeners);
} /* Conn_ExitListeners */
-
/**
* Bind a socket to a specific (source) address.
*
ret = ng_ipaddr_init(addr, listen_addrstr, Port);
if (!ret) {
assert(listen_addrstr);
- Log(LOG_CRIT, "Can't bind to [%s]:%u: can't convert ip address \"%s\"",
- listen_addrstr, Port, listen_addrstr);
+ Log(LOG_CRIT,
+ "Can't bind to [%s]:%u: can't convert ip address \"%s\"!",
+ listen_addrstr, Port, listen_addrstr);
}
return ret;
}
-
/**
* Set a socket to "IPv6 only". If the given socket doesn't belong to the
* AF_INET6 family, or the operating system doesn't support this functionality,
#endif
}
-
/**
* Initialize new listening port.
*
af = ng_ipaddr_af(&addr);
sock = socket(af, SOCK_STREAM, 0);
- if( sock < 0 ) {
- Log(LOG_CRIT, "Can't create socket (af %d) : %s!", af, strerror(errno));
+ if (sock < 0) {
+ Log(LOG_CRIT, "Can't create socket (af %d) : %s!", af,
+ strerror(errno));
return -1;
}
return -1;
if (bind(sock, (struct sockaddr *)&addr, ng_ipaddr_salen(&addr)) != 0) {
- Log(LOG_CRIT, "Can't bind socket to address %s:%d - %s",
- ng_ipaddr_tostr(&addr), Port, strerror(errno));
+ Log(LOG_CRIT, "Can't bind socket to address %s:%d - %s!",
+ ng_ipaddr_tostr(&addr), Port, strerror(errno));
close(sock);
return -1;
}
- if( listen( sock, 10 ) != 0 ) {
- Log( LOG_CRIT, "Can't listen on socket: %s!", strerror( errno ));
- close( sock );
+ if (listen(sock, 10) != 0) {
+ Log(LOG_CRIT, "Can't listen on socket: %s!", strerror(errno));
+ close(sock);
return -1;
}
/* keep fd in list so we can close it when ngircd restarts/shuts down */
- if (!array_catb( &My_Listeners,(char*) &sock, sizeof(int) )) {
- Log( LOG_CRIT, "Can't add socket to My_Listeners array: %s!", strerror( errno ));
- close( sock );
+ if (!array_catb(&My_Listeners, (char *)&sock, sizeof(int))) {
+ Log(LOG_CRIT, "Can't add socket to My_Listeners array: %s!",
+ strerror(errno));
+ close(sock);
return -1;
}
return sock;
} /* NewListener */
-
-#ifdef SSL_SUPPORT
-
-/**
- * Check if SSL library needs to read SSL-protocol related data.
- *
- * SSL/TLS connections require extra treatment:
- * When either CONN_SSL_WANT_WRITE or CONN_SSL_WANT_READ is set, we
- * need to take care of that first, before checking read/write buffers.
- * For instance, while we might have data in our write buffer, the
- * TLS/SSL protocol might need to read internal data first for TLS/SSL
- * writes to succeed.
- *
- * If this function returns true, such a condition is met and we have
- * to reverse the condition (check for read even if we've data to write,
- * do not check for read but writeability even if write-buffer is empty).
- *
- * @param c Connection to check.
- * @returns true if SSL-library has to read protocol data.
- */
-static bool
-SSL_WantRead(const CONNECTION *c)
-{
- if (Conn_OPTION_ISSET(c, CONN_SSL_WANT_READ)) {
- io_event_add(c->sock, IO_WANTREAD);
- return true;
- }
- return false;
-}
-
-/**
- * Check if SSL library needs to write SSL-protocol related data.
- *
- * Please see description of SSL_WantRead() for full description!
- *
- * @param c Connection to check.
- * @returns true if SSL-library has to write protocol data.
- */
-static bool
-SSL_WantWrite(const CONNECTION *c)
-{
- if (Conn_OPTION_ISSET(c, CONN_SSL_WANT_WRITE)) {
- io_event_add(c->sock, IO_WANTWRITE);
- return true;
- }
- return false;
-}
-
-#else
-
-static inline bool
-SSL_WantRead(UNUSED const CONNECTION *c)
-{ return false; }
-
-static inline bool
-SSL_WantWrite(UNUSED const CONNECTION *c)
-{ return false; }
-
-#endif
-
-
/**
* "Main Loop": Loop until shutdown or restart is signalled.
*
Conn_Handler(void)
{
int i;
- unsigned int wdatalen, bytes_processed;
+ size_t wdatalen, bytes_processed;
struct timeval tv;
time_t t;
/* Look for non-empty read buffers ... */
for (i = 0; i < Pool_Size; i++) {
if ((My_Connections[i].sock > NONE)
- && (array_bytes(&My_Connections[i].rbuf) > 0)
- && (My_Connections[i].delaytime <= t)) {
+ && (array_bytes(&My_Connections[i].rbuf) > 0)) {
/* ... and try to handle the received data */
bytes_processed = Handle_Buffer(i);
/* if we processed data, and there might be
if (My_Connections[i].sock <= NONE)
continue;
- wdatalen = (unsigned int)array_bytes(&My_Connections[i].wbuf);
+ wdatalen = array_bytes(&My_Connections[i].wbuf);
#ifdef ZLIB
if (wdatalen > 0 ||
array_bytes(&My_Connections[i].zip.wbuf) > 0)
if (wdatalen > 0)
#endif
{
+#ifdef SSL_SUPPORT
if (SSL_WantRead(&My_Connections[i]))
continue;
+#endif
io_event_add(My_Connections[i].sock,
IO_WANTWRITE);
}
continue;
#ifdef SSL_SUPPORT
if (SSL_WantWrite(&My_Connections[i]))
- continue; /* TLS/SSL layer needs to write data; deal with this first */
+ /* TLS/SSL layer needs to write data; deal
+ * with this first! */
+ continue;
#endif
if (Proc_InProgress(&My_Connections[i].proc_stat)) {
/* Wait for completion of forked subprocess
* which is the granularity with witch we handle "penalty
* times" for example.
* Note: tv_sec/usec are undefined(!) after io_dispatch()
- * returns, so we have to set it beforce each call to it! */
+ * returns, so we have to set it before each call to it! */
tv.tv_usec = 0;
tv.tv_sec = 1;
PACKAGE_NAME);
exit(1);
}
+
+ /* Should ngIRCd timeout when idle? */
+ if (Conf_IdleTimeout > 0 && NumConnectionsAccepted > 0
+ && idle_t > 0 && time(NULL) - idle_t >= Conf_IdleTimeout) {
+ LogDebug("Server idle timeout reached: %d second%s. Initiating shutdown ...",
+ Conf_IdleTimeout,
+ Conf_IdleTimeout == 1 ? "" : "s");
+ NGIRCd_SignalQuit = true;
+ }
}
if (NGIRCd_SignalQuit)
Log(LOG_NOTICE | LOG_snotice, "Server restarting NOW!");
} /* Conn_Handler */
-
/**
* Write a text string into the socket of a connection.
*
#endif
{
char buffer[COMMAND_LEN];
+#ifdef ICONV
+ char *ptr, *message;
+#endif
size_t len;
bool ok;
va_list ap;
+ int r;
assert( Idx > NONE );
assert( Format != NULL );
#else
va_start( ap );
#endif
- if (vsnprintf( buffer, COMMAND_LEN - 2, Format, ap ) >= COMMAND_LEN - 2 ) {
+ r = vsnprintf(buffer, COMMAND_LEN - 2, Format, ap);
+ if (r >= COMMAND_LEN - 2 || r == -1) {
/*
* The string that should be written to the socket is longer
* than the allowed size of COMMAND_LEN bytes (including both
*
* So we have a big problem here: we should send more bytes
* to the network than we are allowed to and we don't know
- * the originator (any more). The "old" behaviour of blaming
+ * the originator (any more). The "old" behavior of blaming
* the receiver ("next hop") is a bad idea (it could be just
* an other server only routing the message!), so the only
* option left is to shorten the string and to hope that the
* result is still somewhat useful ...
+ *
+ * Note:
+ * C99 states that vsnprintf() "returns the number of characters
+ * that would have been printed if the n were unlimited"; but
+ * according to the Linux manual page "glibc until 2.0.6 would
+ * return -1 when the output was truncated" -- so we have to
+ * handle both cases ...
* -alex-
*/
CUT_TXTSUFFIX);
}
+#ifdef ICONV
+ ptr = strchr(buffer + 1, ':');
+ if (ptr) {
+ ptr++;
+ message = Conn_EncodingTo(Idx, ptr);
+ if (message != ptr)
+ strlcpy(ptr, message, sizeof(buffer) - (ptr - buffer));
+ }
+#endif
+
#ifdef SNIFFER
if (NGIRCd_Sniffer)
Log(LOG_DEBUG, " -> connection %d: '%s'.", Idx, buffer);
return ok;
} /* Conn_WriteStr */
+GLOBAL char*
+Conn_Password( CONN_ID Idx )
+{
+ assert( Idx > NONE );
+ if (My_Connections[Idx].pwd == NULL)
+ return (char*)"\0";
+ else
+ return My_Connections[Idx].pwd;
+} /* Conn_Password */
+
+GLOBAL void
+Conn_SetPassword( CONN_ID Idx, const char *Pwd )
+{
+ assert( Idx > NONE );
+
+ if (My_Connections[Idx].pwd)
+ free(My_Connections[Idx].pwd);
+
+ My_Connections[Idx].pwd = strdup(Pwd);
+ if (My_Connections[Idx].pwd == NULL) {
+ Log(LOG_EMERG, "Can't allocate memory! [Conn_SetPassword]");
+ exit(1);
+ }
+} /* Conn_SetPassword */
/**
* Append Data to the outbound write buffer of a connection.
return true;
} /* Conn_Write */
-
/**
* Shut down a connection.
*
* connection statistics before disconnecting it.
*/
GLOBAL void
-Conn_Close( CONN_ID Idx, const char *LogMsg, const char *FwdMsg, bool InformClient )
+Conn_Close(CONN_ID Idx, const char *LogMsg, const char *FwdMsg, bool InformClient)
{
/* Close connection. Open pipes of asynchronous resolver
* sub-processes are closed down. */
/* Is this link already shutting down? */
if( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_ISCLOSING )) {
/* Conn_Close() has been called recursively for this link;
- * probabe reason: Handle_Write() failed -- see below. */
- LogDebug("Recursive request to close connection: %d", Idx );
+ * probable reason: Handle_Write() failed -- see below. */
+ LogDebug("Recursive request to close connection %d!", Idx );
return;
}
Conn_OPTION_ADD( &My_Connections[Idx], CONN_ISCLOSING );
port = ng_ipaddr_getport(&My_Connections[Idx].addr);
- Log(LOG_INFO, "Shutting down connection %d (%s) with %s:%d ...", Idx,
+ Log(LOG_INFO, "Shutting down connection %d (%s) with \"%s:%d\" ...", Idx,
LogMsg ? LogMsg : FwdMsg, My_Connections[Idx].host, port);
/* Search client, if any */
c = Conn_GetClient( Idx );
#ifdef SSL_SUPPORT
if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_SSL )) {
- Log(LOG_INFO, "SSL connection %d shutting down ...", Idx);
+ LogDebug("SSL connection %d shutting down ...", Idx);
ConnSSL_Free(&My_Connections[Idx]);
}
#endif
in_p = (int)(( in_k * 100 ) / in_z_k );
out_p = (int)(( out_k * 100 ) / out_z_k );
Log(LOG_INFO,
- "Connection %d with %s:%d closed (in: %.1fk/%.1fk/%d%%, out: %.1fk/%.1fk/%d%%).",
+ "Connection %d with \"%s:%d\" closed (in: %.1fk/%.1fk/%d%%, out: %.1fk/%.1fk/%d%%).",
Idx, My_Connections[Idx].host, port,
in_k, in_z_k, in_p, out_k, out_z_k, out_p);
}
#endif
{
Log(LOG_INFO,
- "Connection %d with %s:%d closed (in: %.1fk, out: %.1fk).",
+ "Connection %d with \"%s:%d\" closed (in: %.1fk, out: %.1fk).",
Idx, My_Connections[Idx].host, port,
in_k, out_k);
}
array_free(&My_Connections[Idx].rbuf);
array_free(&My_Connections[Idx].wbuf);
+ if (My_Connections[Idx].pwd != NULL)
+ free(My_Connections[Idx].pwd);
/* Clean up connection structure (=free it) */
Init_Conn_Struct( Idx );
NumConnections--;
LogDebug("Shutdown of connection %d completed, %ld connection%s left.",
Idx, NumConnections, NumConnections != 1 ? "s" : "");
-} /* Conn_Close */
+ idle_t = NumConnections > 0 ? 0 : time(NULL);
+} /* Conn_Close */
/**
* Get current number of connections.
return NumConnections;
} /* Conn_Count */
-
/**
* Get number of maximum simultaneous connections.
*
return NumConnectionsMax;
} /* Conn_CountMax */
-
/**
* Get number of connections accepted since the daemon startet.
*
return NumConnectionsAccepted;
} /* Conn_CountAccepted */
-
/**
* Synchronize established connections and configured server structures
* after a configuration update and store the correct connection IDs, if any.
}
} /* SyncServerStruct */
-
/**
* Get IP address string of a connection.
*
return ng_ipaddr_tostr(&My_Connections[Idx].addr);
}
-
/**
* Send out data of write buffer; connect new sockets.
*
#ifdef SSL_SUPPORT
if ( Conn_OPTION_ISSET( &My_Connections[Idx], CONN_SSL )) {
- len = ConnSSL_Write(&My_Connections[Idx], array_start(&My_Connections[Idx].wbuf), wdatalen);
+ len = ConnSSL_Write(&My_Connections[Idx],
+ array_start(&My_Connections[Idx].wbuf),
+ wdatalen);
} else
#endif
{
if (errno == EAGAIN || errno == EINTR)
return true;
- Log(LOG_ERR, "Write error on connection %d (socket %d): %s!",
- Idx, My_Connections[Idx].sock, strerror(errno));
- Conn_Close(Idx, "Write error!", NULL, false);
+ if (!Conn_OPTION_ISSET(&My_Connections[Idx], CONN_ISCLOSING))
+ Log(LOG_ERR,
+ "Write error on connection %d (socket %d): %s!",
+ Idx, My_Connections[Idx].sock, strerror(errno));
+ else
+ LogDebug("Recursive write error on connection %d (socket %d): %s!",
+ Idx, My_Connections[Idx].sock, strerror(errno));
+ Conn_Close(Idx, "Write error", NULL, false);
return false;
}
return true;
} /* Handle_Write */
-
/**
* Count established connections to a specific IP address.
*
return cnt;
} /* Count_Connections */
-
/**
* Initialize new client connection on a listening socket.
*
* @param Sock Listening socket descriptor.
+ * @param IsSSL true if this socket expects SSL-encrypted data.
* @returns Accepted socket descriptor or -1 on error.
*/
static int
-New_Connection(int Sock)
+New_Connection(int Sock, UNUSED bool IsSSL)
{
#ifdef TCPWRAP
struct request_info req;
#endif
ng_ipaddr_t new_addr;
char ip_str[NG_INET_ADDRSTRLEN];
- int new_sock, new_sock_len, identsock;
+ int new_sock, new_sock_len;
CLIENT *c;
long cnt;
return -1;
}
- c = Client_NewLocal(new_sock, ip_str, CLIENT_UNKNOWN, false);
+ c = Client_NewLocal(new_sock, NULL, CLIENT_UNKNOWN, false);
if (!c) {
Log(LOG_ALERT,
"Can't accept connection: can't create client structure!");
Client_SetHostname(c, My_Connections[new_sock].host);
- Log(LOG_INFO, "Accepted connection %d from %s:%d on socket %d.",
+ Log(LOG_INFO, "Accepted connection %d from \"%s:%d\" on socket %d.",
new_sock, My_Connections[new_sock].host,
ng_ipaddr_getport(&new_addr), Sock);
+ Account_Connection();
+
+#ifdef SSL_SUPPORT
+ /* Delay connection initalization until SSL handshake is finished */
+ if (!IsSSL)
+#endif
+ Conn_StartLogin(new_sock);
+
+ return new_sock;
+} /* New_Connection */
+
+/**
+ * Finish connection initialization, start resolver subprocess.
+ *
+ * @param Idx Connection index.
+ */
+GLOBAL void
+Conn_StartLogin(CONN_ID Idx)
+{
+ int ident_sock = -1;
+
+ assert(Idx >= 0);
+
+ /* Nothing to do if DNS (and resolver subprocess) is disabled */
+ if (!Conf_DNS)
+ return;
- identsock = new_sock;
#ifdef IDENTAUTH
- if (!Conf_Ident)
- identsock = -1;
+ /* Should we make an IDENT request? */
+ if (Conf_Ident)
+ ident_sock = My_Connections[Idx].sock;
#endif
- if (Conf_DNS) {
- if (Conf_NoticeAuth) {
+
+ if (Conf_NoticeAuth) {
+ /* Send "NOTICE AUTH" messages to the client */
#ifdef IDENTAUTH
- if (Conf_Ident)
- (void)Conn_WriteStr(new_sock,
- "NOTICE AUTH :*** Looking up your hostname and checking ident");
- else
+ if (Conf_Ident)
+ (void)Conn_WriteStr(Idx,
+ "NOTICE AUTH :*** Looking up your hostname and checking ident");
+ else
#endif
- (void)Conn_WriteStr(new_sock,
- "NOTICE AUTH :*** Looking up your hostname");
- }
- Resolve_Addr(&My_Connections[new_sock].proc_stat, &new_addr,
- identsock, cb_Read_Resolver_Result);
+ (void)Conn_WriteStr(Idx,
+ "NOTICE AUTH :*** Looking up your hostname");
+ /* Send buffered data to the client, but break on errors
+ * because Handle_Write() would have closed the connection
+ * again in this case! */
+ if (!Handle_Write(Idx))
+ return;
}
- Account_Connection();
- return new_sock;
-} /* New_Connection */
-
+ Resolve_Addr(&My_Connections[Idx].proc_stat, &My_Connections[Idx].addr,
+ ident_sock, cb_Read_Resolver_Result);
+}
/**
* Update global connection counters.
Account_Connection(void)
{
NumConnections++;
+ idle_t = 0;
if (NumConnections > NumConnectionsMax)
NumConnectionsMax = NumConnections;
LogDebug("Total number of connections now %lu (max %lu).",
NumConnections, NumConnectionsMax);
} /* Account_Connection */
-
/**
* Translate socket handle into connection index.
*
return Sock;
} /* Socket2Index */
-
/**
- * Read data from the network to the read buffer. If an error occures,
+ * Read data from the network to the read buffer. If an error occurs,
* the socket of this connection will be shut down.
*
* @param Idx Connection index.
#endif
len = read(My_Connections[Idx].sock, readbuf, sizeof(readbuf));
if (len == 0) {
- Log(LOG_INFO, "%s:%u (%s) is closing the connection ...",
- My_Connections[Idx].host,
- (unsigned int) ng_ipaddr_getport(&My_Connections[Idx].addr),
- ng_ipaddr_tostr(&My_Connections[Idx].addr));
- Conn_Close(Idx,
- "Socket closed!", "Client closed connection",
- false);
+ LogDebug("Client \"%s:%u\" is closing connection %d ...",
+ My_Connections[Idx].host,
+ ng_ipaddr_tostr(&My_Connections[Idx].addr), Idx);
+ Conn_Close(Idx, NULL, "Client closed connection", false);
return;
}
if( errno == EAGAIN ) return;
Log(LOG_ERR, "Read error on connection %d (socket %d): %s!",
Idx, My_Connections[Idx].sock, strerror(errno));
- Conn_Close(Idx, "Read error!", "Client closed connection",
+ Conn_Close(Idx, "Read error", "Client closed connection",
false);
return;
}
if (!array_catb(&My_Connections[Idx].zip.rbuf, readbuf,
(size_t) len)) {
Log(LOG_ERR,
- "Could not append recieved data to zip input buffer (connection %d): %d bytes!",
+ "Could not append received data to zip input buffer (connection %d): %d bytes!",
Idx, len);
Conn_Close(Idx, "Receive buffer space exhausted", NULL,
false);
{
if (!array_catb( &My_Connections[Idx].rbuf, readbuf, len)) {
Log(LOG_ERR,
- "Could not append recieved data to input buffer (connection %d): %d bytes!",
+ "Could not append received data to input buffer (connection %d): %d bytes!",
Idx, len);
- Conn_Close(Idx, "Receive buffer space exhausted", NULL, false );
+ Conn_Close(Idx, "Receive buffer space exhausted", NULL,
+ false );
}
}
}
} /* Read_Request */
-
/**
* Handle all data in the connection read-buffer.
*
assert(c != NULL);
- /* Servers do get special command limits, so they can process
- * all the messages that are required while peering. */
+ /* Servers get special command limits that depend on the user count */
switch (Client_Type(c)) {
case CLIENT_SERVER:
- /* Allow servers to send more commands in the first 10 secods
- * to speed up server login and network synchronisation. */
- if (starttime - Client_StartTime(c) < 10)
- maxcmd = MAX_COMMANDS_SERVER * 5;
- else
- maxcmd = MAX_COMMANDS_SERVER;
+ maxcmd = (int)(Client_UserCount() / 5)
+ + MAX_COMMANDS_SERVER_MIN;
+ /* Allow servers to handle even more commands while peering
+ * to speed up server login and network synchronization. */
+ if (Conn_LastPing(Idx) == 0)
+ maxcmd *= 5;
break;
case CLIENT_SERVICE:
maxcmd = MAX_COMMANDS_SERVICE; break;
ptr2 = strchr(array_start(&My_Connections[Idx].rbuf), '\n');
if (ptr) {
/* Check if there is a single CR or LF _before_ the
- * corerct CR+LF line terminator: */
+ * correct CR+LF line terminator: */
first_eol = ptr1 < ptr2 ? ptr1 : ptr2;
if (first_eol < ptr) {
/* Single CR or LF before CR+LF found */
return len_processed;
} /* Handle_Buffer */
-
/**
* Check whether established connections are still alive or not.
* If not, play PING-PONG first; and if that doesn't help either,
if (My_Connections[i].lastping <
time(NULL) - Conf_PongTimeout) {
/* Timeout */
- LogDebug
- ("Connection %d: Ping timeout: %d seconds.",
- i, Conf_PongTimeout);
- snprintf(msg, sizeof(msg), "Ping timeout: %d seconds", Conf_PongTimeout);
+ snprintf(msg, sizeof(msg),
+ "Ping timeout: %d seconds",
+ Conf_PongTimeout);
+ LogDebug("Connection %d: %s.", i, msg);
Conn_Close(i, NULL, msg, true);
}
} else if (My_Connections[i].lastdata <
}
} /* Check_Connections */
-
/**
* Check if further server links should be established.
*/
}
} /* Check_Servers */
-
/**
* Establish a new outgoing server connection.
*
assert( Server > NONE );
+ /* Make sure that the remote server hasn't re-linked to this server
+ * asynchronously on its own */
+ if (Conf_Server[Server].conn_id > NONE) {
+ Log(LOG_INFO,
+ "Connection to \"%s\" meanwhile re-established, aborting preparation.");
+ return;
+ }
+
if (!ng_ipaddr_tostr_r(dest, ip_str)) {
Log(LOG_WARNING, "New_Server: Could not convert IP to string");
+ Conf_Server[Server].conn_id = NONE;
return;
}
if (new_sock < 0) {
Log(LOG_CRIT, "Can't create socket (af %d): %s!",
af_dest, strerror(errno));
+ Conf_Server[Server].conn_id = NONE;
return;
}
- if (!Init_Socket(new_sock))
+ if (!Init_Socket(new_sock)) {
+ Conf_Server[Server].conn_id = NONE;
return;
+ }
/* is a bind address configured? */
res = ng_ipaddr_af(&Conf_Server[Server].bind_addr);
- /* if yes, bind now. If it fails, warn and let connect() pick a source address */
+
+ /* if yes, bind now. If it fails, warn and let connect() pick a
+ * source address */
if (res && bind(new_sock, (struct sockaddr *) &Conf_Server[Server].bind_addr,
ng_ipaddr_salen(&Conf_Server[Server].bind_addr)))
{
ng_ipaddr_tostr_r(&Conf_Server[Server].bind_addr, ip_str);
- Log(LOG_WARNING, "Can't bind socket to %s: %s!", ip_str, strerror(errno));
+ Log(LOG_WARNING, "Can't bind socket to %s: %s!", ip_str,
+ strerror(errno));
}
ng_ipaddr_setport(dest, Conf_Server[Server].port);
res = connect(new_sock, (struct sockaddr *) dest, ng_ipaddr_salen(dest));
if(( res != 0 ) && ( errno != EINPROGRESS )) {
Log( LOG_CRIT, "Can't connect socket: %s!", strerror( errno ));
close( new_sock );
+ Conf_Server[Server].conn_id = NONE;
return;
}
"Cannot allocate memory for server connection (socket %d)",
new_sock);
close( new_sock );
+ Conf_Server[Server].conn_id = NONE;
return;
}
if (!io_event_create( new_sock, IO_WANTWRITE, cb_connserver)) {
- Log(LOG_ALERT, "io_event_create(): could not add fd %d", strerror(errno));
+ Log(LOG_ALERT, "io_event_create(): could not add fd %d",
+ strerror(errno));
close(new_sock);
+ Conf_Server[Server].conn_id = NONE;
return;
}
if (!c) {
Log( LOG_ALERT, "Can't establish connection: can't create client structure!" );
io_close(new_sock);
+ Conf_Server[Server].conn_id = NONE;
return;
}
Client_SetToken( c, TOKEN_OUTBOUND );
/* Register connection */
- Conf_Server[Server].conn_id = new_sock;
+ if (!Conf_SetServer(Server, new_sock))
+ return;
My_Connections[new_sock].sock = new_sock;
My_Connections[new_sock].addr = *dest;
My_Connections[new_sock].client = c;
sizeof(My_Connections[new_sock].host ));
#ifdef SSL_SUPPORT
- if (Conf_Server[Server].SSLConnect && !ConnSSL_PrepareConnect( &My_Connections[new_sock],
- &Conf_Server[Server] ))
+ if (Conf_Server[Server].SSLConnect &&
+ !ConnSSL_PrepareConnect(&My_Connections[new_sock], &Conf_Server[Server]))
{
Log(LOG_ALERT, "Could not initialize SSL for outgoing connection");
- Conn_Close( new_sock, "Could not initialize SSL for outgoing connection", NULL, false );
- Init_Conn_Struct( new_sock );
+ Conn_Close(new_sock, "Could not initialize SSL for outgoing connection",
+ NULL, false);
+ Init_Conn_Struct(new_sock);
Conf_Server[Server].conn_id = NONE;
return;
}
Conn_OPTION_ADD( &My_Connections[new_sock], CONN_ISCONNECTING );
} /* New_Server */
-
/**
* Initialize connection structure.
*
My_Connections[Idx].lastdata = now;
My_Connections[Idx].lastprivmsg = now;
Proc_InitStruct(&My_Connections[Idx].proc_stat);
-} /* Init_Conn_Struct */
+#ifdef ICONV
+ My_Connections[Idx].iconv_from = (iconv_t)(-1);
+ My_Connections[Idx].iconv_to = (iconv_t)(-1);
+#endif
+} /* Init_Conn_Struct */
/**
* Initialize options of a new socket.
int value;
if (!io_setnonblock(Sock)) {
- Log( LOG_CRIT, "Can't enable non-blocking mode for socket: %s!", strerror( errno ));
- close( Sock );
+ Log(LOG_CRIT, "Can't enable non-blocking mode for socket: %s!",
+ strerror(errno));
+ close(Sock);
return false;
}
/* Don't block this port after socket shutdown */
value = 1;
- if( setsockopt( Sock, SOL_SOCKET, SO_REUSEADDR, &value, (socklen_t)sizeof( value )) != 0 )
- {
- Log( LOG_ERR, "Can't set socket option SO_REUSEADDR: %s!", strerror( errno ));
+ if (setsockopt(Sock, SOL_SOCKET, SO_REUSEADDR, &value,
+ (socklen_t)sizeof(value)) != 0) {
+ Log(LOG_ERR, "Can't set socket option SO_REUSEADDR: %s!",
+ strerror(errno));
/* ignore this error */
}
return true;
} /* Init_Socket */
-
/**
* Read results of a resolver sub-process and try to initiate a new server
* connection.
static void
cb_Connect_to_Server(int fd, UNUSED short events)
{
- /* Read result of resolver sub-process from pipe and start connection */
int i;
size_t len;
- ng_ipaddr_t dest_addrs[4]; /* we can handle at most 3; but we read up to
- four so we can log the 'more than we can handle'
- condition. First result is tried immediately, rest
- is saved for later if needed. */
- LogDebug("Resolver: Got forward lookup callback on fd %d, events %d", fd, events);
+ /* we can handle at most 3 addresses; but we read up to 4 so we can
+ * log the 'more than we can handle' condition. First result is tried
+ * immediately, rest is saved for later if needed. */
+ ng_ipaddr_t dest_addrs[4];
+
+ LogDebug("Resolver: Got forward lookup callback on fd %d, events %d",
+ fd, events);
for (i=0; i < MAX_SERVERS; i++) {
if (Proc_GetPipeFd(&Conf_Server[i].res_stat) == fd )
assert((len % sizeof(ng_ipaddr_t)) == 0);
- LogDebug("Got result from resolver: %u structs (%u bytes).", len/sizeof(ng_ipaddr_t), len);
+ LogDebug("Got result from resolver: %u structs (%u bytes).",
+ len/sizeof(ng_ipaddr_t), len);
memset(&Conf_Server[i].dst_addr, 0, sizeof(Conf_Server[i].dst_addr));
if (len > sizeof(ng_ipaddr_t)) {
New_Server(i, dest_addrs);
} /* cb_Read_Forward_Lookup */
-
/**
* Read results of a resolver sub-process from the pipe and update the
- * apropriate connection/client structure(s): hostname and/or IDENT user name.
+ * appropriate connection/client structure(s): hostname and/or IDENT user name.
*
* @param r_fd File descriptor of the pipe to the sub-process.
* @param events (ignored IO specification)
char *identptr;
#ifdef IDENTAUTH
char readbuf[HOST_LEN + 2 + CLIENT_USER_LEN];
+ char *ptr;
#else
char readbuf[HOST_LEN + 1];
#endif
Client_SetHostname(c, readbuf);
if (Conf_NoticeAuth)
(void)Conn_WriteStr(i,
- "NOTICE AUTH :*** Found your hostname");
+ "NOTICE AUTH :*** Found your hostname: %s",
+ My_Connections[i].host);
#ifdef IDENTAUTH
++identptr;
if (*identptr) {
- Log(LOG_INFO, "IDENT lookup for connection %d: \"%s\".", i, identptr);
- Client_SetUser(c, identptr, true);
- if (Conf_NoticeAuth)
+ ptr = identptr;
+ while (*ptr) {
+ if ((*ptr < '0' || *ptr > '9') &&
+ (*ptr < 'A' || *ptr > 'Z') &&
+ (*ptr < 'a' || *ptr > 'z'))
+ break;
+ ptr++;
+ }
+ if (*ptr) {
+ /* Erroneous IDENT reply */
+ Log(LOG_NOTICE,
+ "Got invalid IDENT reply for connection %d! Ignored.",
+ i);
+ } else {
+ Log(LOG_INFO,
+ "IDENT lookup for connection %d: \"%s\".",
+ i, identptr);
+ Client_SetUser(c, identptr, true);
+ }
+ if (Conf_NoticeAuth) {
(void)Conn_WriteStr(i,
- "NOTICE AUTH :*** Got ident response");
- } else {
+ "NOTICE AUTH :*** Got %sident response%s%s",
+ *ptr ? "invalid " : "",
+ *ptr ? "" : ": ",
+ *ptr ? "" : identptr);
+ }
+ } else if(Conf_Ident) {
Log(LOG_INFO, "IDENT lookup for connection %d: no result.", i);
- if (Conf_NoticeAuth && Conf_Ident)
+ if (Conf_NoticeAuth)
(void)Conn_WriteStr(i,
"NOTICE AUTH :*** No ident response");
}
#endif
+
+ if (Conf_NoticeAuth) {
+ /* Send buffered data to the client, but break on
+ * errors because Handle_Write() would have closed
+ * the connection again in this case! */
+ if (!Handle_Write(i))
+ return;
+ }
+
Class_HandleServerBans(c);
}
#ifdef DEBUG
- else Log( LOG_DEBUG, "Resolver: discarding result for already registered connection %d.", i );
+ else
+ LogDebug("Resolver: discarding result for already registered connection %d.", i);
#endif
} /* cb_Read_Resolver_Result */
-
/**
* Write a "simple" (error) message to a socket.
*
}
} /* Simple_Error */
-
/**
* Get CLIENT structure that belongs to a local connection identified by its
* index number. Each connection belongs to a client by definition, so it is
return &c->proc_stat;
} /* Conn_GetProcStat */
-
/**
* Get CONN_ID from file descriptor associated to a subprocess structure.
*
My_Connections[Idx].auth_ping = ID;
} /* Conn_SetAuthPing */
-#endif
-
+#endif /* STRICT_RFC */
#ifdef SSL_SUPPORT
/**
- * Get information about used SSL chiper.
+ * IO callback for new SSL-enabled client and server connections.
+ *
+ * @param sock Socket descriptor.
+ * @param what IO specification (IO_WANTREAD/IO_WANTWRITE/...).
+ */
+static void
+cb_clientserver_ssl(int sock, UNUSED short what)
+{
+ CONN_ID idx = Socket2Index(sock);
+
+ assert(idx >= 0);
+
+ if (idx < 0) {
+ io_close(sock);
+ return;
+ }
+
+ switch (ConnSSL_Accept(&My_Connections[idx])) {
+ case 1:
+ break; /* OK */
+ case 0:
+ return; /* EAGAIN: callback will be invoked again by IO layer */
+ default:
+ Conn_Close(idx,
+ "SSL accept error, closing socket", "SSL accept error",
+ false);
+ return;
+ }
+
+ io_event_setcb(sock, cb_clientserver); /* SSL handshake completed */
+}
+
+/**
+ * IO callback for listening SSL sockets: handle new connections. This callback
+ * gets called when a new SSL-enabled connection should be accepted.
+ *
+ * @param sock Socket descriptor.
+ * @param irrelevant (ignored IO specification)
+ */
+static void
+cb_listen_ssl(int sock, short irrelevant)
+{
+ int fd;
+
+ (void) irrelevant;
+ fd = New_Connection(sock, true);
+ if (fd < 0)
+ return;
+ io_event_setcb(My_Connections[fd].sock, cb_clientserver_ssl);
+}
+
+/**
+ * IO callback for new outgoing SSL-enabled server connections.
+ *
+ * @param sock Socket descriptor.
+ * @param unused (ignored IO specification)
+ */
+static void
+cb_connserver_login_ssl(int sock, short unused)
+{
+ CONN_ID idx = Socket2Index(sock);
+
+ assert(idx >= 0);
+ if (idx < 0) {
+ io_close(sock);
+ return;
+ }
+ (void) unused;
+ switch (ConnSSL_Connect( &My_Connections[idx])) {
+ case 1: break;
+ case 0: LogDebug("ConnSSL_Connect: not ready");
+ return;
+ case -1:
+ Log(LOG_ERR, "SSL connection on socket %d failed!", sock);
+ Conn_Close(idx, "Can't connect", NULL, false);
+ return;
+ }
+
+ Log( LOG_INFO, "SSL connection %d with \"%s:%d\" established.", idx,
+ My_Connections[idx].host, Conf_Server[Conf_GetServer( idx )].port );
+
+ server_login(idx);
+}
+
+
+/**
+ * Check if SSL library needs to read SSL-protocol related data.
+ *
+ * SSL/TLS connections require extra treatment:
+ * When either CONN_SSL_WANT_WRITE or CONN_SSL_WANT_READ is set, we
+ * need to take care of that first, before checking read/write buffers.
+ * For instance, while we might have data in our write buffer, the
+ * TLS/SSL protocol might need to read internal data first for TLS/SSL
+ * writes to succeed.
+ *
+ * If this function returns true, such a condition is met and we have
+ * to reverse the condition (check for read even if we've data to write,
+ * do not check for read but writeability even if write-buffer is empty).
+ *
+ * @param c Connection to check.
+ * @returns true if SSL-library has to read protocol data.
+ */
+static bool
+SSL_WantRead(const CONNECTION *c)
+{
+ if (Conn_OPTION_ISSET(c, CONN_SSL_WANT_READ)) {
+ io_event_add(c->sock, IO_WANTREAD);
+ return true;
+ }
+ return false;
+}
+
+/**
+ * Check if SSL library needs to write SSL-protocol related data.
+ *
+ * Please see description of SSL_WantRead() for full description!
+ *
+ * @param c Connection to check.
+ * @returns true if SSL-library has to write protocol data.
+ */
+static bool
+SSL_WantWrite(const CONNECTION *c)
+{
+ if (Conn_OPTION_ISSET(c, CONN_SSL_WANT_WRITE)) {
+ io_event_add(c->sock, IO_WANTWRITE);
+ return true;
+ }
+ return false;
+}
+
+/**
+ * Get information about used SSL cipher.
*
* @param Idx Connection index number.
* @param buf Buffer for returned information text.
return ConnSSL_GetCipherInfo(&My_Connections[Idx], buf, len);
}
-
/**
* Check if a connection is SSL-enabled or not.
*
return Conn_OPTION_ISSET(&My_Connections[Idx], CONN_SSL);
}
-#endif
+GLOBAL char *
+Conn_GetCertFp(CONN_ID Idx)
+{
+ if (Idx < 0)
+ return NULL;
+ assert(Idx < (int) array_length(&My_ConnArray, sizeof(CONNECTION)));
+ return ConnSSL_GetCertFp(&My_Connections[Idx]);
+}
+
+GLOBAL bool
+Conn_SetCertFp(CONN_ID Idx, const char *fingerprint)
+{
+ if (Idx < 0)
+ return false;
+ assert(Idx < (int) array_length(&My_ConnArray, sizeof(CONNECTION)));
+ return ConnSSL_SetCertFp(&My_Connections[Idx], fingerprint);
+}
+
+#else /* SSL_SUPPORT */
+
+GLOBAL bool
+Conn_UsesSSL(UNUSED CONN_ID Idx)
+{
+ return false;
+}
+
+GLOBAL char *
+Conn_GetCertFp(UNUSED CONN_ID Idx)
+{
+ return NULL;
+}
+GLOBAL bool
+Conn_SetCertFp(UNUSED CONN_ID Idx, UNUSED const char *fingerprint)
+{
+ return true;
+}
+
+#endif /* SSL_SUPPORT */
#ifdef DEBUG
}
} /* Conn_DumpClients */
-#endif
-
+#endif /* DEBUG */
/* -eof- */
projects / ngircd-alex.git / blobdiff