ngircd

Free, portable and lightweight Internet Relay Chat server http://ngircd.barton.de/
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commit b35f8916a5252182070d0e4502a540e81a3ced90
parent 3d7aa9f90626bb16ef9db9c9c739ba748976448c
Author: Alexander Barton <alex@barton.de>
Date:   Mon, 17 Mar 2014 22:59:58 +0100

conn.c: Code cleanup

Reformat and restructure some code, move all SSL related code into
one single #ifdef block, for example.

Diffstat:
Msrc/ngircd/conn.c | 431++++++++++++++++++++++++++++++++++++-------------------------------------------
1 file changed, 198 insertions(+), 233 deletions(-)

diff --git a/src/ngircd/conn.c b/src/ngircd/conn.c @@ -65,13 +65,13 @@ #include "parse.h" #include "resolve.h" -#define SERVER_WAIT (NONE - 1) +#define SERVER_WAIT (NONE - 1) /** "Wait for outgoing connection" flag */ -#define MAX_COMMANDS 3 -#define MAX_COMMANDS_SERVER_MIN 10 -#define MAX_COMMANDS_SERVICE 10 +#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 +#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 )); @@ -101,6 +101,9 @@ static void server_login PARAMS((CONN_ID idx)); #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 @@ -110,7 +113,6 @@ static void cb_clientserver PARAMS((int sock, short what)); time_t idle_t = 0; - /** * Get number of sockets available from systemd(8). * @@ -146,7 +148,6 @@ my_sd_listen_fds(void) return count; } - /** * IO callback for listening sockets: handle new connections. This callback * gets called when a new non-SSL connection should be accepted. @@ -161,29 +162,6 @@ cb_listen(int sock, short irrelevant) (void) New_Connection(sock, false); } - -#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. - * - * @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); -} -#endif - - /** * IO callback for new outgoing non-SSL server connections. * @@ -262,7 +240,6 @@ cb_connserver(int sock, UNUSED short what) server_login(idx); } - /** * Login to a remote server. * @@ -280,47 +257,12 @@ server_login(CONN_ID idx) 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. * @@ -353,43 +295,6 @@ cb_clientserver(int sock, short what) Handle_Write(idx); } - -#ifdef SSL_SUPPORT -/** - * 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 */ -} -#endif - - /** * Initialize connection module. */ @@ -424,7 +329,6 @@ Conn_Init( void ) Init_Conn_Struct(i); } /* Conn_Init */ - /** * Clean up connection module. */ @@ -449,7 +353,6 @@ Conn_Exit( void ) 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 @@ -467,7 +370,6 @@ Conn_CloseAllSockets(int ExceptOf) } } - /** * Initialize listening ports. * @@ -506,7 +408,6 @@ Init_Listeners(array *a, const char *listen_addr, void (*func)(int,short)) return created; } - /** * Initialize all listening sockets. * @@ -536,15 +437,18 @@ Conn_InitListeners( void ) 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); + 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) + 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. */ + /* 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; @@ -614,7 +518,6 @@ Conn_InitListeners( void ) return created; } /* Conn_InitListeners */ - /** * Shut down all listening sockets. */ @@ -644,7 +547,6 @@ Conn_ExitListeners( void ) array_free(&My_Listeners); } /* Conn_ExitListeners */ - /** * Bind a socket to a specific (source) address. * @@ -661,13 +563,13 @@ InitSinaddrListenAddr(ng_ipaddr_t *addr, const char *listen_addrstr, UINT16 Port 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, @@ -693,7 +595,6 @@ set_v6_only(int af, int sock) #endif } - /** * Initialize new listening port. * @@ -750,57 +651,6 @@ NewListener(const char *listen_addr, UINT16 Port) 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; -} - -#endif - - /** * "Main Loop": Loop until shutdown or restart is signalled. * @@ -814,7 +664,7 @@ GLOBAL void Conn_Handler(void) { int i; - unsigned int wdatalen, bytes_processed; + size_t wdatalen, bytes_processed; struct timeval tv; time_t t; @@ -852,7 +702,7 @@ Conn_Handler(void) 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) @@ -875,7 +725,9 @@ Conn_Handler(void) 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 @@ -933,7 +785,6 @@ Conn_Handler(void) Log(LOG_NOTICE | LOG_snotice, "Server restarting NOW!"); } /* Conn_Handler */ - /** * Write a text string into the socket of a connection. * @@ -1140,7 +991,6 @@ Conn_Write( CONN_ID Idx, char *Data, size_t Len ) return true; } /* Conn_Write */ - /** * Shut down a connection. * @@ -1153,7 +1003,7 @@ Conn_Write( CONN_ID Idx, char *Data, size_t Len ) * 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. */ @@ -1299,7 +1149,6 @@ Conn_Close( CONN_ID Idx, const char *LogMsg, const char *FwdMsg, bool InformClie idle_t = NumConnections > 0 ? 0 : time(NULL); } /* Conn_Close */ - /** * Get current number of connections. * @@ -1311,7 +1160,6 @@ Conn_Count(void) return NumConnections; } /* Conn_Count */ - /** * Get number of maximum simultaneous connections. * @@ -1323,7 +1171,6 @@ Conn_CountMax(void) return NumConnectionsMax; } /* Conn_CountMax */ - /** * Get number of connections accepted since the daemon startet. * @@ -1335,7 +1182,6 @@ Conn_CountAccepted(void) return NumConnectionsAccepted; } /* Conn_CountAccepted */ - /** * Synchronize established connections and configured server structures * after a configuration update and store the correct connection IDs, if any. @@ -1367,7 +1213,6 @@ Conn_SyncServerStruct(void) } } /* SyncServerStruct */ - /** * Get IP address string of a connection. * @@ -1381,7 +1226,6 @@ Conn_GetIPAInfo(CONN_ID Idx) return ng_ipaddr_tostr(&My_Connections[Idx].addr); } - /** * Send out data of write buffer; connect new sockets. * @@ -1429,7 +1273,9 @@ Handle_Write( CONN_ID Idx ) #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 { @@ -1457,7 +1303,6 @@ Handle_Write( CONN_ID Idx ) return true; } /* Handle_Write */ - /** * Count established connections to a specific IP address. * @@ -1478,7 +1323,6 @@ Count_Connections(ng_ipaddr_t *a) return cnt; } /* Count_Connections */ - /** * Initialize new client connection on a listening socket. * @@ -1625,7 +1469,6 @@ New_Connection(int Sock, UNUSED bool IsSSL) return new_sock; } /* New_Connection */ - /** * Finish connection initialization, start resolver subprocess. * @@ -1669,7 +1512,6 @@ Conn_StartLogin(CONN_ID Idx) ident_sock, cb_Read_Resolver_Result); } - /** * Update global connection counters. */ @@ -1684,7 +1526,6 @@ Account_Connection(void) NumConnections, NumConnectionsMax); } /* Account_Connection */ - /** * Translate socket handle into connection index. * @@ -1705,7 +1546,6 @@ Socket2Index( int Sock ) return Sock; } /* Socket2Index */ - /** * Read data from the network to the read buffer. If an error occurs, * the socket of this connection will be shut down. @@ -1778,7 +1618,8 @@ Read_Request( CONN_ID Idx ) Log(LOG_ERR, "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 ); } } @@ -1819,7 +1660,6 @@ Read_Request( CONN_ID Idx ) } } /* Read_Request */ - /** * Handle all data in the connection read-buffer. * @@ -1987,7 +1827,6 @@ Handle_Buffer(CONN_ID Idx) 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, @@ -2046,7 +1885,6 @@ Check_Connections(void) } } /* Check_Connections */ - /** * Check if further server links should be established. */ @@ -2094,7 +1932,6 @@ Check_Servers(void) } } /* Check_Servers */ - /** * Establish a new outgoing server connection. * @@ -2147,12 +1984,15 @@ New_Server( int Server , ng_ipaddr_t *dest) /* 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)); @@ -2173,7 +2013,8 @@ New_Server( int Server , ng_ipaddr_t *dest) } 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; @@ -2209,12 +2050,13 @@ New_Server( int Server , ng_ipaddr_t *dest) 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; } @@ -2224,7 +2066,6 @@ New_Server( int Server , ng_ipaddr_t *dest) Conn_OPTION_ADD( &My_Connections[new_sock], CONN_ISCONNECTING ); } /* New_Server */ - /** * Initialize connection structure. * @@ -2248,7 +2089,6 @@ Init_Conn_Struct(CONN_ID Idx) #endif } /* Init_Conn_Struct */ - /** * Initialize options of a new socket. * @@ -2264,16 +2104,18 @@ Init_Socket( int Sock ) 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 */ } @@ -2293,7 +2135,6 @@ Init_Socket( int Sock ) return true; } /* Init_Socket */ - /** * Read results of a resolver sub-process and try to initiate a new server * connection. @@ -2304,15 +2145,16 @@ Init_Socket( int Sock ) 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 ) @@ -2337,7 +2179,8 @@ cb_Connect_to_Server(int fd, UNUSED short events) 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)) { @@ -2355,7 +2198,6 @@ cb_Connect_to_Server(int fd, UNUSED short events) New_Server(i, dest_addrs); } /* cb_Read_Forward_Lookup */ - /** * Read results of a resolver sub-process from the pipe and update the * appropriate connection/client structure(s): hostname and/or IDENT user name. @@ -2476,7 +2318,6 @@ cb_Read_Resolver_Result( int r_fd, UNUSED short events ) #endif } /* cb_Read_Resolver_Result */ - /** * Write a "simple" (error) message to a socket. * @@ -2510,7 +2351,6 @@ Simple_Message(int Sock, const char *Msg) } } /* 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 @@ -2547,7 +2387,6 @@ Conn_GetProcStat(CONN_ID Idx) return &c->proc_stat; } /* Conn_GetProcStat */ - /** * Get CONN_ID from file descriptor associated to a subprocess structure. * @@ -2585,12 +2424,142 @@ Conn_SetAuthPing(CONN_ID Idx, long ID) My_Connections[Idx].auth_ping = ID; } /* Conn_SetAuthPing */ -#endif - +#endif /* STRICT_RFC */ #ifdef SSL_SUPPORT /** + * 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. @@ -2607,7 +2576,6 @@ Conn_GetCipherInfo(CONN_ID Idx, char *buf, size_t len) return ConnSSL_GetCipherInfo(&My_Connections[Idx], buf, len); } - /** * Check if a connection is SSL-enabled or not. * @@ -2623,7 +2591,6 @@ Conn_UsesSSL(CONN_ID Idx) return Conn_OPTION_ISSET(&My_Connections[Idx], CONN_SSL); } - GLOBAL char * Conn_GetCertFp(CONN_ID Idx) { @@ -2633,7 +2600,6 @@ Conn_GetCertFp(CONN_ID Idx) return ConnSSL_GetCertFp(&My_Connections[Idx]); } - GLOBAL bool Conn_SetCertFp(CONN_ID Idx, const char *fingerprint) { @@ -2642,28 +2608,28 @@ Conn_SetCertFp(CONN_ID Idx, const char *fingerprint) assert(Idx < (int) array_length(&My_ConnArray, sizeof(CONNECTION))); return ConnSSL_SetCertFp(&My_Connections[Idx], fingerprint); } -#else + +#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 +#endif /* SSL_SUPPORT */ #ifdef DEBUG @@ -2689,7 +2655,6 @@ Conn_DebugDump(void) } } /* Conn_DumpClients */ -#endif - +#endif /* DEBUG */ /* -eof- */