--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/freeDiameter/cnxctx.h	Mon Oct 26 16:00:49 2009 +0900
@@ -0,0 +1,124 @@
+/*********************************************************************************************************
+* Software License Agreement (BSD License)                                                               *
+* Author: Sebastien Decugis <sdecugis@nict.go.jp>							 *
+*													 *
+* Copyright (c) 2009, WIDE Project and NICT								 *
+* All rights reserved.											 *
+* 													 *
+* Redistribution and use of this software in source and binary forms, with or without modification, are  *
+* permitted provided that the following conditions are met:						 *
+* 													 *
+* * Redistributions of source code must retain the above 						 *
+*   copyright notice, this list of conditions and the 							 *
+*   following disclaimer.										 *
+*    													 *
+* * Redistributions in binary form must reproduce the above 						 *
+*   copyright notice, this list of conditions and the 							 *
+*   following disclaimer in the documentation and/or other						 *
+*   materials provided with the distribution.								 *
+* 													 *
+* * Neither the name of the WIDE Project or NICT nor the 						 *
+*   names of its contributors may be used to endorse or 						 *
+*   promote products derived from this software without 						 *
+*   specific prior written permission of WIDE Project and 						 *
+*   NICT.												 *
+* 													 *
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED *
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
+* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR *
+* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 	 *
+* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 	 *
+* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR *
+* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF   *
+* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.								 *
+*********************************************************************************************************/
+
+/* This file contains the definitions for internal use in the connection context files */
+
+#ifndef _CNXCTX_H
+#define _CNXCTX_H
+
+/* The connection context structure */
+struct cnxctx {
+	char		cc_id[60];	/* The name of this connection */
+	char		cc_remid[60];	/* Id of remote peer */
+
+	int 		cc_socket;	/* The socket object of the connection -- <=0 if no socket is created */
+
+	int 		cc_proto;	/* IPPROTO_TCP or IPPROTO_SCTP */
+	int		cc_tls;		/* Is TLS already started ? */
+
+	pthread_t	cc_rcvthr;	/* thread for receiving messages on the connection */
+	int		cc_loop;	/* tell the thread if it loops or stops after the first message is received */
+	
+	struct fifo *	cc_incoming;	/* FIFO queue of events received on the connection, FDEVP_CNX_* */
+	struct fifo *	cc_alt;		/* alternate fifo to send FDEVP_CNX_* events to. */
+	#define Target_Queue(cnx)	((cnx)->cc_alt ?: (cnx)->cc_incoming)
+
+	/* If cc_tls == true */
+	struct {
+		int				 mode; 		/* GNUTLS_CLIENT / GNUTLS_SERVER */
+		gnutls_session_t 		 session;	/* Session object (stream #0 in case of SCTP) */
+	}		cc_tls_para;
+
+	/* If cc_proto == SCTP */
+	struct	{
+		uint16_t str_out;	/* Out streams */
+		uint16_t str_in;	/* In streams */
+		uint16_t pairs;		/* max number of pairs ( = min(in, out)) */
+		uint16_t next;		/* # of stream the next message will be sent to */
+	} 		cc_sctp_para;
+
+	/* If both conditions */
+	struct {
+		struct sctps_ctx *array; /* an array of cc_sctp_para.pairs elements -- the #0 is special (session is outside)*/
+		struct sr_store	 *sess_store; /* Session data of the master session, to resume the children sessions */
+	} 		cc_sctps_data;
+};
+
+/* TLS */
+int fd_tls_rcvthr_core(struct cnxctx * conn, gnutls_session_t session);
+int fd_tls_prepare(gnutls_session_t * session, int mode, char * priority);
+
+/* TCP */
+int fd_tcp_create_bind_server( int * sock, sSA * sa, socklen_t salen );
+int fd_tcp_listen( int sock );
+int fd_tcp_client( int *sock, sSA * sa, socklen_t salen );
+int fd_tcp_get_local_ep(int sock, sSS * ss, socklen_t *sl);
+int fd_tcp_get_remote_ep(int sock, sSS * ss, socklen_t *sl);
+
+#ifndef DISABLE_SCTP
+/* SCTP */
+int fd_sctp_create_bind_server( int * sock, struct fd_list * list, uint16_t port );
+int fd_sctp_listen( int sock );
+int fd_sctp_client( int *sock, int no_ip6, uint16_t port, struct fd_list * list );
+int fd_sctp_get_local_ep(int sock, struct fd_list * list);
+int fd_sctp_get_remote_ep(int sock, struct fd_list * list);
+int fd_sctp_get_str_info( int sock, uint16_t *in, uint16_t *out, sSS *primary );
+int fd_sctp_sendstr(int sock, uint16_t strid, uint8_t * buf, size_t len);
+int fd_sctp_recvmeta(int sock, uint16_t * strid, uint8_t ** buf, size_t * len, int *event);
+
+/* TLS over SCTP (multi-stream) */
+struct sctps_ctx {
+	struct cnxctx 	*parent; 	/* for info such as socket, conn name, event list */
+	uint16_t	 strid;		/* Stream # of this session */
+	struct fifo	*raw_recv;	/* Raw data received on this stream, for demux */
+	struct {
+		uint8_t *buf;
+		size_t   bufsz;
+		size_t   offset;
+	} 		 partial;	/* If the pull function did not read the full content of first message in raw, it stores it here for next read call. */
+	pthread_t	 thr;		/* Thread to decrypt raw data in this pair of streams */
+	gnutls_session_t session;	/* TLS context using this pair of streams -- except if strid == 0, in that case session is outside the array */
+};
+
+int fd_sctps_init(struct cnxctx * conn);
+int fd_sctps_handshake_others(struct cnxctx * conn, char * priority);
+int fd_sctps_startthreads(struct cnxctx * conn);
+void fd_sctps_stopthreads(struct cnxctx * conn);
+void fd_sctps_destroy(struct cnxctx * conn);
+
+#endif /* DISABLE_SCTP */
+
+#endif /* _CNXCTX_H */
+