Initial commit
Change-Id: I6a4444e3c193dae437cd7929f4c39aba7b749efa
diff --git a/libfdcore/cnxctx.h b/libfdcore/cnxctx.h
new file mode 100644
index 0000000..dcc4bea
--- /dev/null
+++ b/libfdcore/cnxctx.h
@@ -0,0 +1,153 @@
+/*********************************************************************************************************
+* Software License Agreement (BSD License) *
+* Author: Sebastien Decugis <sdecugis@freediameter.net> *
+* *
+* Copyright (c) 2013, 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
+
+/* Maximum time we allow a connection to be blocked because of head-of-the-line buffers. After this delay, connection is considered in error. */
+#define MAX_HOTL_BLOCKING_TIME 1000 /* ms */
+
+/* The connection context structure */
+struct cnxctx {
+ char cc_id[60]; /* The name of this connection. the first 5 chars are reserved for flags display (cc_state). */
+ 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_family; /* AF_INET or AF_INET6 (mixed) */
+ int cc_proto; /* IPPROTO_TCP or IPPROTO_SCTP */
+
+ uint32_t cc_state; /* True if the object is being destroyed: we don't send events anymore. access with fd_cnx_getstate() */
+ #define CC_STATUS_CLOSING 1
+ #define CC_STATUS_ERROR 2
+ #define CC_STATUS_SIGNALED 4
+ #define CC_STATUS_TLS 8
+
+ 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. */
+
+ /* If cc_tls == true */
+ struct {
+ DiamId_t cn; /* If not NULL, remote certif will be checked to match this Common Name */
+ int mode; /* GNUTLS_CLIENT / GNUTLS_SERVER */
+ int algo; /* ALGO_HANDSHAKE_DEFAULT / ALGO_HANDSHAKE_3436 */
+ 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 */
+ int unordered; /* boolean telling if use of streams > 0 is permitted */
+ } cc_sctp_para;
+
+ /* If both conditions */
+ struct {
+ struct sctp3436_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_sctp3436_data;
+};
+
+void fd_cnx_markerror(struct cnxctx * conn);
+uint32_t fd_cnx_getstate(struct cnxctx * conn);
+int fd_cnx_teststate(struct cnxctx * conn, uint32_t flag);
+void fd_cnx_addstate(struct cnxctx * conn, uint32_t orstate);
+void fd_cnx_setstate(struct cnxctx * conn, uint32_t abstate);
+struct fifo * fd_cnx_target_queue(struct cnxctx * conn);
+
+
+/* Socket */
+ssize_t fd_cnx_s_recv(struct cnxctx * conn, void *buffer, size_t length);
+void fd_cnx_s_setto(int sock);
+
+/* TLS */
+int fd_tls_rcvthr_core(struct cnxctx * conn, gnutls_session_t session);
+int fd_tls_prepare(gnutls_session_t * session, int mode, int dtls, char * priority, void * alt_creds);
+#ifndef GNUTLS_VERSION_300
+int fd_tls_verify_credentials(gnutls_session_t session, struct cnxctx * conn, int verbose);
+#endif /* GNUTLS_VERSION_300 */
+
+/* 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, int family, 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 );
+ssize_t fd_sctp_sendstrv(struct cnxctx * conn, uint16_t strid, const struct iovec *iov, int iovcnt);
+int fd_sctp_recvmeta(struct cnxctx * conn, uint16_t * strid, uint8_t ** buf, size_t * len, int *event);
+
+/* TLS over SCTP (multi-stream) */
+struct sctp3436_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_sctp3436_init(struct cnxctx * conn);
+int fd_sctp3436_handshake_others(struct cnxctx * conn, char * priority, void * alt_creds);
+int fd_sctp3436_startthreads(struct cnxctx * conn, int others);
+void fd_sctp3436_bye(struct cnxctx * conn);
+void fd_sctp3436_waitthreadsterm(struct cnxctx * conn);
+void fd_sctp3436_gnutls_deinit_others(struct cnxctx * conn);
+void fd_sctp3436_stopthreads(struct cnxctx * conn);
+void fd_sctp3436_destroy(struct cnxctx * conn);
+
+#endif /* DISABLE_SCTP */
+
+#endif /* _CNXCTX_H */
+