/* * This file is part of the Sofia-SIP package * * Copyright (C) 2005 Nokia Corporation. * * Contact: Pekka Pessi * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License * as published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA * */ #ifndef TPORT_INTERNAL_H /** Defined when has been included. */ #define TPORT_INTERNAL_H /**@file tport_internal.h * @brief Transport interface * * @author Pekka Pessi * * @date Created: Thu Jun 29 15:58:06 2000 ppessi */ #ifndef SU_H #include #endif #include #ifndef MSG_ADDR_H #include #endif #ifndef TPORT_H #include #endif #if HAVE_SOFIA_STUN #include "sofia-sip/stun.h" #include "sofia-sip/stun_tag.h" #endif #include #ifndef SU_DEBUG #define SU_DEBUG 3 #endif #define SU_LOG tport_log #include #if !defined(MSG_NOSIGNAL) || defined(__CYGWIN__) #undef MSG_NOSIGNAL #define MSG_NOSIGNAL (0) #endif #if !HAVE_MSG_TRUNC #define MSG_TRUNC (0) #endif #ifndef NONE #define NONE ((void *)-1) #endif SOFIA_BEGIN_DECLS typedef struct tport_master tport_master_t; typedef struct tport_pending_s tport_pending_t; typedef struct tport_primary tport_primary_t; typedef struct tport_vtable tport_vtable_t; struct sigcomp_state_handler; struct sigcomp_algorithm; struct sigcomp_udvm; struct sigcomp_magic; struct sigcomp_compartment; typedef long unsigned LU; /* for printf() and friends */ /** Transport parameters */ typedef struct { usize_t tpp_mtu; /**< Maximum packet size */ unsigned tpp_idle; /**< Allowed connection idle time. */ unsigned tpp_timeout; /**< Allowed idle time for message. */ unsigned tpp_sigcomp_lifetime; /**< SigComp compartment lifetime */ unsigned tpp_thrpsize; /**< Size of thread pool */ unsigned tpp_thrprqsize; /**< Length of per-thread recv queue */ unsigned tpp_qsize; /**< Size of queue */ unsigned tpp_drop; /**< Packet drop probablity */ int tpp_tos; /**< IP TOS */ unsigned tpp_conn_orient:1; /**< Connection-orienteded */ unsigned tpp_sdwn_error:1; /**< If true, shutdown is error. */ unsigned tpp_stun_server:1; /**< If true, use stun server */ unsigned :0; } tport_params_t; /** Transport object. * * A transport object can be used in three roles, to represent transport * list (aka master transport), to represent available transports (aka * primary transport) and to represent actual transport connections (aka * secondary transport). */ struct tport_s { su_home_t tp_home[1]; /**< Memory home */ int tp_refs; /**< Number of references to tport */ unsigned tp_black:1; /**< Used by red-black-tree */ unsigned tp_accepted:1; /**< Originally server? */ unsigned tp_conn_orient:1; /**< Is connection-oriented */ unsigned tp_has_connection:1; /**< Has real connection */ unsigned tp_reusable:1; /**< Can this connection be reused */ unsigned tp_closed : 1; /**< This transport is closed */ /**< Remote end has sent FIN (2) or we should not just read */ unsigned tp_recv_close:2; /** We will send FIN (1) or have sent FIN (2) */ unsigned tp_send_close:2; unsigned tp_has_keepalive:1; unsigned tp_has_stun_server:1; unsigned tp_trunc:1; unsigned tp_is_connected:1; /**< Connection is established */ unsigned:0; tport_t *tp_left, *tp_right, *tp_dad; /**< Links in tport tree */ tport_master_t *tp_master; /**< Master transport */ tport_primary_t *tp_pri; /**< Primary transport */ tport_params_t *tp_params; /**< Transport parameters */ tp_magic_t *tp_magic; /**< Context provided by consumer */ msg_t const *tp_rlogged; /**< Last logged when receiving */ msg_t const *tp_slogged; /**< Last logged when sending */ unsigned tp_time; /**< When this transport was last used */ tp_name_t tp_name[1]; /**< Transport name. * * This is either our name (if primary) * or peer name (if secondary). */ #define tp_protoname tp_name->tpn_proto #define tp_canon tp_name->tpn_canon #define tp_host tp_name->tpn_host #define tp_port tp_name->tpn_port #define tp_ident tp_name->tpn_ident su_socket_t tp_socket; /**< Socket of this tport*/ int tp_index; /**< Root registration index */ int tp_events; /**< Subscribed events */ su_addrinfo_t tp_addrinfo[1]; /**< Peer/own address info */ su_sockaddr_t tp_addr[1]; /**< Peer/own address */ #define tp_addrlen tp_addrinfo->ai_addrlen /* ==== Receive queue ================================================== */ msg_t *tp_msg; /**< Message being received */ /* ==== Pending messages =============================================== */ tport_pending_t *tp_pending; /**< Pending requests */ tport_pending_t *tp_released; /**< Released pends */ unsigned tp_plen; /**< Size of tp_pending */ unsigned tp_pused; /**< Used pends */ unsigned short tp_reported; /**< Report counter */ unsigned short tp_pad; /* ==== Send queue ===================================================== */ msg_t **tp_queue; /**< Messages being sent */ unsigned short tp_qhead; /**< Head of queue */ msg_iovec_t *tp_unsent; /**< Pointer to first unsent iovec */ size_t tp_unsentlen; /**< Number of unsent iovecs */ msg_iovec_t *tp_iov; /**< Iovecs allocated for sending */ size_t tp_iovlen; /**< Number of allocated iovecs */ /* ==== Extensions ===================================================== */ tport_compressor_t *tp_comp; /* ==== Statistics ===================================================== */ struct { uint64_t sent_bytes, sent_on_line, recv_bytes, recv_on_line; uint64_t sent_msgs, recv_msgs; } tp_stats; }; /** Primary structure */ struct tport_primary { tport_t pri_primary[1]; /**< Transport part */ #if DOXYGEN_ONLY su_home_t pri_home[1]; #else #define pri_home pri_primary->tp_home #define pri_master pri_primary->tp_master #define pri_protoname pri_primary->tp_name->tpn_proto #endif tport_vtable_t const *pri_vtable; int pri_public; /**< Type of primary transport; * tport_type_local, * tport_type_stun, etc. */ char pri_ident[16]; tport_primary_t *pri_next; /**< Next primary tport */ tport_t *pri_secondary; /**< Secondary tports */ unsigned pri_updating:1; /**< Currently updating address */ unsigned pri_natted:1; /**< Using natted address */ unsigned pri_has_tls:1; /**< Supports tls */ unsigned:0; void *pri_stun_handle; tport_params_t pri_params[1]; /**< Transport parameters */ }; /** Master structure */ struct tport_master { tport_t mr_master[1]; #if DOXYGEN_ONLY su_home_t mr_home[1]; #else #define mr_home mr_master->tp_home #endif int mr_stun_step_ready; /**< for stun's callback */ tp_stack_t *mr_stack; /**< Transport consumer */ tp_stack_class_t const *mr_tpac; /**< Methods provided by stack */ int mr_log; /**< Do logging of parsed messages */ su_root_t *mr_root; /**< SU root pointer */ /**< Timer reclaiming unused connections and compartment */ su_timer_t *mr_timer; /** File to dump received and sent data */ FILE *mr_dump_file; tport_primary_t *mr_primaries; /**< List of primary contacts */ tport_params_t mr_params[1]; unsigned mr_boundserver:1; /**< Server has been bound */ unsigned mr_bindv6only:1; /**< We can bind separately to IPv6/4 */ unsigned :0; /* Delivery context */ struct tport_delivery { tport_t *d_tport; msg_t *d_msg; tp_name_t d_from[1]; tport_compressor_t *d_comp; } mr_delivery[1]; tport_stun_server_t *mr_stun_server; #if 0 struct tport_nat_s { int initialized; int bound; int stun_enabled; char *external_ip_address; #if HAVE_UPNP || HAVE_SOFIA_STUN int try_stun; #endif #if HAVE_UPNP #endif #if HAVE_SOFIA_STUN tport_master_t *tport; char *stun_server; /* stun_socket_t *stun_socket; */ stun_handle_t *stun; su_socket_t stun_socket; su_sockaddr_t sockaddr; #endif } mr_nat[1]; #endif }; /** Virtual funtion table for transports */ struct tport_vtable { char const *vtp_name; enum tport_via vtp_public; size_t vtp_pri_size; /* Size of primary tport */ int (*vtp_init_primary)(tport_primary_t *pri, tp_name_t tpn[1], su_addrinfo_t *ai, tagi_t const *, char const **return_culprit); void (*vtp_deinit_primary)(tport_primary_t *pri); int (*vtp_wakeup_pri)(tport_primary_t *pri, int events); tport_t *(*vtp_connect)(tport_primary_t *pri, su_addrinfo_t *ai, tp_name_t const *tpn); size_t vtp_secondary_size; /* Size of secondary tport */ int (*vtp_init_secondary)(tport_t *, int socket, int accepted, char const **return_reason); void (*vtp_deinit_secondary)(tport_t *); void (*vtp_shutdown)(tport_t *, int how); int (*vtp_set_events)(tport_t const *self); int (*vtp_wakeup)(tport_t *self, int events); int (*vtp_recv)(tport_t *self); ssize_t (*vtp_send)(tport_t const *self, msg_t *msg, msg_iovec_t iov[], size_t iovused); void (*vtp_deliver)(tport_t *self, msg_t *msg, su_time_t now); int (*vtp_prepare)(tport_t *self, msg_t *msg, tp_name_t const *tpn, struct sigcomp_compartment *cc, unsigned mtu); int (*vtp_keepalive)(tport_t *self, su_addrinfo_t const *ai, tagi_t const *taglist); int (*vtp_stun_response)(tport_t const *self, void *msg, size_t msglen, void *addr, socklen_t addrlen); }; int tport_register_type(tport_vtable_t const *vtp); /** Test if transport is needs connect() before sending. */ static inline int tport_is_connection_oriented(tport_t const *self) { return self->tp_conn_orient; } /** Test if transport involves connection. @NEW_1_12_5 */ static inline int tport_has_connection(tport_t const *self) { return self->tp_has_connection; } void tport_has_been_updated(tport_t *tport); int tport_primary_compression(tport_primary_t *pri, char const *compression, tagi_t const *tl); void tport_set_tos(su_socket_t socket, su_addrinfo_t *ai, int tos); tport_t *tport_base_connect(tport_primary_t *pri, su_addrinfo_t *ai, su_addrinfo_t *name, tp_name_t const *tpn); int tport_stream_init_primary(tport_primary_t *pri, su_socket_t socket, tp_name_t tpn[1], su_addrinfo_t *ai, tagi_t const *tags, char const **return_reason); tport_t *tport_alloc_secondary(tport_primary_t *pri, int socket, int accepted, char const **return_reason); int tport_accept(tport_primary_t *pri, int events); void tport_zap_secondary(tport_t *self); int tport_bind_socket(int socket, su_addrinfo_t *ai, char const **return_culprit); void tport_close(tport_t *self); int tport_error_event(tport_t *self); void tport_recv_event(tport_t *self); void tport_send_event(tport_t *self); void tport_hup_event(tport_t *self); ssize_t tport_recv_iovec(tport_t const *self, msg_t **mmsg, msg_iovec_t iovec[msg_n_fragments], size_t N, int exact); msg_t *tport_msg_alloc(tport_t const *self, usize_t size); int tport_prepare_and_send(tport_t *self, msg_t *msg, tp_name_t const *tpn, struct sigcomp_compartment *cc, unsigned mtu); int tport_send_msg(tport_t *self, msg_t *msg, tp_name_t const *tpn, struct sigcomp_compartment *cc); void tport_deliver(tport_t *self, msg_t *msg, msg_t *next, tport_compressor_t *comp, su_time_t now); void tport_base_deliver(tport_t *self, msg_t *msg, su_time_t now); int tport_recv_error_report(tport_t *self); void tport_error_report(tport_t *self, int errcode, su_sockaddr_t const *addr); void tport_open_log(tport_master_t *mr, tagi_t *tags); void tport_log_msg(tport_t *tp, msg_t *msg, char const *what, char const *via, su_time_t now); void tport_dump_iovec(tport_t const *self, msg_t *msg, size_t n, su_iovec_t const iov[], size_t iovused, char const *what, char const *how); extern tport_vtable_t const tport_udp_vtable; extern tport_vtable_t const tport_udp_client_vtable; int tport_udp_init_primary(tport_primary_t *, tp_name_t tpn[1], su_addrinfo_t *, tagi_t const *, char const **return_culprit); void tport_udp_deinit_primary(tport_primary_t *); int tport_recv_dgram(tport_t *self); ssize_t tport_send_dgram(tport_t const *self, msg_t *msg, msg_iovec_t iov[], size_t iovused); int tport_udp_error(tport_t const *self, su_sockaddr_t name[1]); extern tport_vtable_t const tport_tcp_vtable; extern tport_vtable_t const tport_tcp_client_vtable; int tport_tcp_init_primary(tport_primary_t *, tp_name_t tpn[1], su_addrinfo_t *, tagi_t const *, char const **return_culprit); int tport_tcp_init_client(tport_primary_t *, tp_name_t tpn[1], su_addrinfo_t *, tagi_t const *, char const **return_culprit); int tport_tcp_init_secondary(tport_t *self, int socket, int accepted, char const **return_reason); int tport_recv_stream(tport_t *self); ssize_t tport_send_stream(tport_t const *self, msg_t *msg, msg_iovec_t iov[], size_t iovused); extern tport_vtable_t const tport_sctp_vtable; extern tport_vtable_t const tport_sctp_client_vtable; extern tport_vtable_t const tport_tls_vtable; extern tport_vtable_t const tport_tls_client_vtable; extern tport_vtable_t const tport_stun_vtable; extern tport_vtable_t const tport_http_connect_vtable; extern tport_vtable_t const tport_threadpool_vtable; typedef struct tport_descriptor_s { char const *tpd_name; tport_vtable_t *tpd_vtable; su_addrinfo_t *tpd_hints; int tpd_is_client_only; } tport_descriptor_t; typedef int const *(tport_set_f)(tport_master_t *mr, tp_name_t const *tpn, tagi_t const *taglist, tport_descriptor_t **return_set, int return_set_size); /* STUN plugin */ int tport_init_stun_server(tport_master_t *mr, tagi_t const *tags); void tport_deinit_stun_server(tport_master_t *mr); int tport_recv_stun_dgram(tport_t const *self, msg_t **in_out_msg, su_sockaddr_t *from, socklen_t fromlen); int tport_stun_server_add_socket(tport_t *tp); int tport_stun_server_remove_socket(tport_t *tp); /* ---------------------------------------------------------------------- */ /* Compressor plugin */ extern tport_comp_vtable_t const *tport_comp_vtable; char const *tport_canonize_comp(char const *comp); int tport_init_compressor(tport_t *, char const *comp_name, tagi_t const *tags); void tport_deinit_compressor(tport_t *); struct sigcomp_compartment * tport_sigcomp_assign_if_needed(tport_t *self, struct sigcomp_compartment *cc); struct sigcomp_udvm **tport_get_udvm_slot(tport_t *self); void tport_sigcomp_accept_incomplete(tport_t *self, msg_t *msg); int tport_recv_comp_dgram(tport_t const *self, tport_compressor_t *sc, msg_t **in_out_msg, su_sockaddr_t *from, socklen_t fromlen); ssize_t tport_send_comp(tport_t const *self, msg_t *msg, msg_iovec_t iov[], size_t iovused, struct sigcomp_compartment *cc, tport_compressor_t *sc); SOFIA_END_DECLS #endif /* TPORT_INTERNAL_H */