/*
* This file is part of the Sofia-SIP package
*
* Copyright (C) 2005 Nokia Corporation.
*
* Contact: Pekka Pessi <pekka.pessi@nokia.com>
*
* 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
*
*/
/**@CFILE tport.c Transport interface implementation.
*
* See tport.docs for more detailed description of tport interface.
*
* @author Pekka Pessi <Pekka.Pessi@nokia.com>
* @author Ismo Puustinen <Ismo.H.Puustinen@nokia.com>
* @author Tat Chan <Tat.Chan@nokia.com>
* @author Kai Vehmanen <kai.vehmanen@nokia.com>
* @author Martti Mela <Martti.Mela@nokia.com>
*
* @date Created: Thu Jul 20 12:54:32 2000 ppessi
*/
#include "config.h"
#include <sofia-sip/string0.h>
#include <sofia-sip/su.h>
#include <sofia-sip/su_errno.h>
#include <sofia-sip/su_alloc.h>
#include <sofia-sip/su_tagarg.h>
#include <sofia-sip/su_localinfo.h>
typedef struct tport_nat_s tport_nat_t;
#define SU_WAKEUP_ARG_T struct tport_s
#define SU_TIMER_ARG_T struct tport_s
#define SU_MSG_ARG_T union tport_su_msg_arg
#include <sofia-sip/su_wait.h>
#include <sofia-sip/msg.h>
#include <sofia-sip/msg_addr.h>
#include <sofia-sip/hostdomain.h>
#include <stdlib.h>
#include <time.h>
#include <assert.h>
#include <errno.h>
#include <limits.h>
#ifndef IPPROTO_SCTP
#define IPPROTO_SCTP (132)
#endif
#include "sofia-sip/tport.h"
#include "sofia-sip/su_uniqueid.h"
#include <sofia-sip/rbtree.h>
#include "tport_internal.h"
#if HAVE_FUNC
#elif HAVE_FUNCTION
#define __func__ __FUNCTION__
#else
static char const __func__[] = "tport";
#endif
#define STACK_RECV(tp, msg, now) \
(tp)->tp_master->mr_tpac->tpac_recv((tp)->tp_master->mr_stack, (tp), \
(msg), (tp)->tp_magic, (now))
#define STACK_ERROR(tp, errcode, dstname) \
(tp)->tp_master->mr_tpac->tpac_error((tp)->tp_master->mr_stack, (tp), \
(errcode), (dstname))
#define STACK_ADDRESS(tp) \
(tp)->tp_master->mr_tpac->tpac_address((tp)->tp_master->mr_stack, (tp))
#define TP_STACK tp_master->mr_stack
/* Define macros for rbtree implementation */
#define TP_LEFT(tp) ((tp)->tp_left)
#define TP_RIGHT(tp) ((tp)->tp_right)
#define TP_PARENT(tp) ((tp)->tp_dad)
#define TP_SET_RED(tp) ((tp)->tp_black = 0)
#define TP_SET_BLACK(tp) ((tp)->tp_black = 1)
#define TP_IS_RED(tp) ((tp) && (tp)->tp_black == 0)
#define TP_IS_BLACK(tp) (!(tp) || (tp)->tp_black == 1)
#define TP_COPY_COLOR(dst, src) ((dst)->tp_black = (src)->tp_black)
#define TP_INSERT(tp) ((void)0)
#define TP_REMOVE(tp) ((tp)->tp_left = (tp)->tp_right = (tp)->tp_dad = NULL)
su_inline int tp_cmp(tport_t const *a, tport_t const *b)
{
if (a == b)
return 0;
if (a->tp_addrlen != b->tp_addrlen)
return (int)(a->tp_addrlen - b->tp_addrlen);
return memcmp(a->tp_addr, b->tp_addr, a->tp_addrlen);
}
su_inline int tprb_is_inserted(tport_t const *a)
{
return a->tp_dad != 0 || a->tp_left != 0 || a->tp_right != 0;
}
RBTREE_PROTOS(su_inline, tprb, tport_t);
RBTREE_BODIES(su_inline, tprb, tport_t,
TP_LEFT, TP_RIGHT, TP_PARENT,
TP_IS_RED, TP_SET_RED, TP_IS_BLACK, TP_SET_BLACK, TP_COPY_COLOR,
tp_cmp, TP_INSERT, TP_REMOVE);
static void tplist_insert(tport_t **list, tport_t *tp)
{
if (*list == NULL)
*list = tp;
else
tp->tp_right = *list, (*list)->tp_left = tp, *list = tp;
for (tp = *list; tp; tp = tp->tp_right) {
assert(tp->tp_left == NULL || tp == tp->tp_left->tp_right);
assert(tp->tp_right == NULL || tp == tp->tp_right->tp_left);
}
}
static void tplist_remove(tport_t **list, tport_t *tp)
{
if (*list == tp) {
*list = tp->tp_right; assert(tp->tp_left == NULL);
}
else if (tp->tp_left) {
tp->tp_left->tp_right = tp->tp_right;
}
if (tp->tp_right) {
tp->tp_right->tp_left = tp->tp_left;
}
TP_REMOVE(tp);
}
enum {
/** Default per-thread read queue length */
THRP_PENDING = 8
};
struct tport_pending_s {
/* tport_pending_t *p_left, *p_right, *p_parent; */
void *p_client;
tport_pending_error_f *p_callback;
msg_t *p_msg;
unsigned short p_reported;
unsigned short p_on_success;
};
/** Return true if transport is master. */
int tport_is_master(tport_t const *self)
{
return
self &&
self->tp_master->mr_master == self;
}
/** Return true if transport is primary. */
int tport_is_primary(tport_t const *self)
{
return
self &&
self->tp_pri->pri_primary == self;
}
/** Return true if transport is secondary. */
int tport_is_secondary(tport_t const *self)
{
return
self &&
self->tp_master->mr_master != self &&
self->tp_pri->pri_primary != self;
}
/** Test if transport has been registered to su_root_t */
int tport_is_registered(tport_t const *self)
{
return self->tp_index != 0;
}
/** Test if transport is stream. */
int tport_is_stream(tport_t const *self)
{
return self->tp_addrinfo->ai_socktype == SOCK_STREAM;
}
/** Test if transport is dgram. */
int tport_is_dgram(tport_t const *self)
{
return self->tp_addrinfo->ai_socktype == SOCK_DGRAM;
}
/** Test if transport is udp. */
int tport_is_udp(tport_t const *self)
{
return self->tp_addrinfo->ai_protocol == IPPROTO_UDP;
}
/** Test if transport is tcp. */
int tport_is_tcp(tport_t const *self)
{
return self->tp_addrinfo->ai_protocol == IPPROTO_TCP;
}
/** Return 1 if transport is reliable, 0 otherwise.
*
* (Note that this is part of external API).
*/
int tport_is_reliable(tport_t const *self)
{
return self != NULL &&
(self->tp_addrinfo->ai_socktype == SOCK_STREAM ||
self->tp_addrinfo->ai_socktype == SOCK_SEQPACKET);
}
/** Return 0 if self is local, nonzero otherwise.
*
* The return valu is the tport_via enum.
*
* @sa TPTAG_PUBLIC(), enum tport_via.
*/
int tport_is_public(tport_t const *self)
{
return self->tp_pri->pri_public;
}
/** Return true if transport supports IPv4 */
int tport_has_ip4(tport_t const *self)
{
return self &&
(self->tp_addrinfo->ai_family == 0 ||
self->tp_addrinfo->ai_family == AF_INET);
}
#if SU_HAVE_IN6
/** Return true if transport supports IPv6 */
int tport_has_ip6(tport_t const *self)
{
return self &&
(self->tp_addrinfo->ai_family == 0 ||
self->tp_addrinfo->ai_family == AF_INET6);
}
#endif
/** Return true if transport supports TLS. */
int tport_has_tls(tport_t const *self)
{
return self && self->tp_pri->pri_has_tls;
}
/** Return true if transport is being updated. */
int tport_is_updating(tport_t const *self)
{
tport_primary_t *pri;
if (tport_is_master(self)) {
for (pri = self->tp_master->mr_primaries; pri; pri = pri->pri_next)
if (pri->pri_updating)
return 1;
}
else if (tport_is_primary(self)) {
return self->tp_pri->pri_updating;
}
return 0;
}
/** Test if transport has been closed.
*
* @since New in @VERSION_1_12_4
*/
inline int tport_is_closed(tport_t const *self)
{
return self->tp_closed;
}
/** Test if transport has been shut down.
*
* @since New in @VERSION_1_12_4
*/
inline int tport_is_shutdown(tport_t const *self)
{
return self->tp_closed || self->tp_send_close || self->tp_recv_close;
}
/** Test if transport is bound */
su_inline int tport_is_bound(tport_t const *self)
{
return self->tp_protoname != NULL;
}
/** Test if transport connection has been established. @NEW_1_12_5. */
int tport_is_connected(tport_t const *self)
{
return self->tp_is_connected;
}
/** Test if transport can be used to send message. @NEW_1_12_7. */
int tport_is_clear_to_send(tport_t const *self)
{
return
tport_is_master(self) ||
tport_is_primary(self) ||
(tport_is_secondary(self) &&
tport_is_registered(self) &&
self->tp_reusable &&
!self->tp_closed &&
!self->tp_send_close);
}
/** Return true if transport has message in send queue. @NEW_1_12_7. */
int tport_has_queued(tport_t const *self)
{
return self && self->tp_queue && self->tp_queue[self->tp_qhead];
}
/** MTU for transport */
su_inline unsigned tport_mtu(tport_t const *self)
{
return self->tp_params->tpp_mtu;
}
su_inline
int tport_has_sigcomp(tport_t const *self)
{
return self->tp_name->tpn_comp != NULL;
}
/** Set IP TOS for socket */
void tport_set_tos(su_socket_t socket, su_addrinfo_t *ai, int tos)
{
if (tos >= 0 &&
ai->ai_family == AF_INET &&
setsockopt(socket, IPPROTO_IP, IP_TOS, (const void*)&tos, sizeof(tos)) < 0) {
SU_DEBUG_3(("tport: setsockopt(IP_TOS): %s\n",
su_strerror(su_errno())));
}
}
static
tport_t *tport_connect(tport_primary_t *pri, su_addrinfo_t *ai,
tp_name_t const *tpn);
static int bind6only_check(tport_master_t *mr);
static
int tport_server_addrinfo(tport_master_t *mr,
char const *canon,
int family,
char const *host,
char const *service,
char const *protocol,
char const * const transports[],
su_addrinfo_t **res);
static int tport_get_local_addrinfo(tport_master_t *mr,
char const *port,
su_addrinfo_t const *hints,
su_addrinfo_t **return_ai);
int tport_getaddrinfo(char const *node, char const *service,
su_addrinfo_t const *hints,
su_addrinfo_t **res);
static void tport_freeaddrinfo(su_addrinfo_t *ai);
static
int tport_addrinfo_copy(su_addrinfo_t *dst, void *addr, socklen_t addrlen,
su_addrinfo_t const *src);
static int
tport_bind_client(tport_master_t *self, tp_name_t const *tpn,
char const * const transports[], enum tport_via public,
tagi_t *tags),
tport_bind_server(tport_master_t *, tp_name_t const *tpn,
char const * const transports[], enum tport_via public,
tagi_t *tags),
tport_setname(tport_t *, char const *, su_addrinfo_t const *, char const *),
tport_wakeup_pri(su_root_magic_t *m, su_wait_t *w, tport_t *self),
tport_wakeup(su_root_magic_t *m, su_wait_t *w, tport_t *self),
tport_base_wakeup(tport_t *self, int events),
tport_connected(su_root_magic_t *m, su_wait_t *w, tport_t *self),
tport_resolve(tport_t *self, msg_t *msg, tp_name_t const *tpn),
tport_send_error(tport_t *, msg_t *, tp_name_t const *, char const *who),
tport_send_fatal(tport_t *, msg_t *, tp_name_t const *, char const *who),
tport_queue(tport_t *self, msg_t *msg),
tport_queue_rest(tport_t *self, msg_t *msg, msg_iovec_t iov[], size_t iovused),
tport_pending_error(tport_t *self, su_sockaddr_t const *dst, int error),
tport_pending_errmsg(tport_t *self, msg_t *msg, int error);
static ssize_t tport_vsend(tport_t *self, msg_t *msg, tp_name_t const *tpn,
msg_iovec_t iov[], size_t iovused,
struct sigcomp_compartment *cc);
tport_t *tport_by_addrinfo(tport_primary_t const *pri,
su_addrinfo_t const *ai,
tp_name_t const *tpn);
void tport_peer_address(tport_t *self, msg_t *msg);
static void tport_parse(tport_t *self, int complete, su_time_t now);
static tport_primary_t *tport_alloc_primary(tport_master_t *mr,
tport_vtable_t const *vtable,
tp_name_t tpn[1],
su_addrinfo_t *ai,
tagi_t const *tags,
char const **return_culprit);
static tport_primary_t *tport_listen(tport_master_t *mr,
tport_vtable_t const *vtable,
tp_name_t tpn[1],
su_addrinfo_t *ai,
tagi_t *tags);
static void tport_zap_primary(tport_primary_t *);
static char *localipname(int pf, char *buf, size_t bufsiz);
static int getprotohints(su_addrinfo_t *hints,
char const *proto, int flags);
/* Stack class used when transports are being destroyed */
static
void tport_destroy_recv(tp_stack_t *stack, tport_t *tp,
msg_t *msg, tp_magic_t *magic,
su_time_t received)
{
msg_destroy(msg);
}
static
void tport_destroy_error(tp_stack_t *stack, tport_t *tp,
int errcode, char const *remote)
{
}
static
msg_t *tport_destroy_alloc(tp_stack_t *stack, int flags,
char const data[], usize_t len,
tport_t const *tp,
tp_client_t *tpc)
{
return NULL;
}
/** Name for "any" transport. @internal */
static char const tpn_any[] = "*";
/** Create the master transport.
*
* Master transport object is used to bind the protocol using transport with
* actual transport objects corresponding to TCP, UDP, etc.
*
* @sa tport_tbind()
*
* @TAGS
* TPTAG_LOG(), TPTAG_DUMP(), tags used with tport_set_params(), especially
* TPTAG_QUEUESIZE().
*/
tport_t *tport_tcreate(tp_stack_t *stack,
tp_stack_class_t const *tpac,
su_root_t *root,
tag_type_t tag, tag_value_t value, ...)
{
tport_master_t *mr;
tp_name_t *tpn;
tport_params_t *tpp;
ta_list ta;
if (!stack || !tpac || !root) {
su_seterrno(EINVAL);
return NULL;
}
mr = su_home_clone(NULL, sizeof *mr);
if (!mr)
return NULL;
SU_DEBUG_7(("%s(): %p\n", "tport_create", (void *)mr));
mr->mr_stack = stack;
mr->mr_tpac = tpac;
mr->mr_root = root;
mr->mr_master->tp_master = mr;
mr->mr_master->tp_params = tpp = mr->mr_params;
mr->mr_master->tp_reusable = 1;
tpp->tpp_mtu = UINT_MAX;
tpp->tpp_thrprqsize = THRP_PENDING;
tpp->tpp_qsize = TPORT_QUEUESIZE;
tpp->tpp_sdwn_error = 1;
tpp->tpp_idle = UINT_MAX;
tpp->tpp_timeout = UINT_MAX;
tpp->tpp_sigcomp_lifetime = UINT_MAX;
tpp->tpp_keepalive = 0;
tpp->tpp_pingpong = 0;
tpp->tpp_pong2ping = 0;
tpp->tpp_stun_server = 1;
tpp->tpp_tos = -1; /* set invalid, valid values are 0-255 */
tpn = mr->mr_master->tp_name;
tpn->tpn_proto = "*";
tpn->tpn_host = "*";
tpn->tpn_canon = "*";
tpn->tpn_port = "*";
ta_start(ta, tag, value);
tport_set_params(mr->mr_master, ta_tags(ta));
tport_open_log(mr, ta_args(ta));
#if HAVE_SOFIA_STUN
tport_init_stun_server(mr, ta_args(ta));
#endif
ta_end(ta);
return mr->mr_master;
}
/** Destroy the master transport. */
void tport_destroy(tport_t *self)
{
tport_master_t *mr;
static tp_stack_class_t tport_destroy_tpac[1] =
{{
sizeof tport_destroy_tpac,
/* tpac_recv */ tport_destroy_recv,
/* tpac_error */ tport_destroy_error,
/* tpac_alloc */ tport_destroy_alloc,
/* tpac_address */ NULL
}};
SU_DEBUG_7(("%s(%p)\n", __func__, (void *)self));
if (self == NULL)
return;
assert(tport_is_master(self));
if (!tport_is_master(self))
return;
mr = (tport_master_t *)self;
mr->mr_tpac = tport_destroy_tpac;
while (mr->mr_primaries)
tport_zap_primary(mr->mr_primaries);
#if HAVE_SOFIA_STUN
tport_deinit_stun_server(mr);
#endif
if (mr->mr_dump_file)
fclose(mr->mr_dump_file), mr->mr_dump_file = NULL;
if (mr->mr_timer)
su_timer_destroy(mr->mr_timer), mr->mr_timer = NULL;
su_home_zap(mr->mr_home);
}
/** Allocate a primary transport */
static
tport_primary_t *tport_alloc_primary(tport_master_t *mr,
tport_vtable_t const *vtable,
tp_name_t tpn[1],
su_addrinfo_t *ai,
tagi_t const *tags,
char const **return_culprit)
{
tport_primary_t *pri, **next;
tport_t *tp;
int save_errno;
for (next = &mr->mr_primaries; *next; next = &(*next)->pri_next)
;
assert(vtable->vtp_pri_size >= sizeof *pri);
if ((pri = su_home_clone(mr->mr_home, vtable->vtp_pri_size))) {
tport_t *tp = pri->pri_primary;
pri->pri_vtable = vtable;
pri->pri_public = vtable->vtp_public;
tp->tp_master = mr;
tp->tp_pri = pri;
tp->tp_socket = INVALID_SOCKET;
tp->tp_magic = mr->mr_master->tp_magic;
tp->tp_params = pri->pri_params;
memcpy(tp->tp_params, mr->mr_params, sizeof (*tp->tp_params));
tp->tp_reusable = mr->mr_master->tp_reusable;
if (!pri->pri_public)
tp->tp_addrinfo->ai_addr = &tp->tp_addr->su_sa;
SU_DEBUG_5(("%s(%p): new primary tport %p\n", __func__, (void *)mr,
(void *)pri));
}
*next = pri;
tp = pri->pri_primary;
if (!tp)
*return_culprit = "alloc";
else if (tport_set_params(tp, TAG_NEXT(tags)) < 0)
*return_culprit = "tport_set_params";
else if (vtable->vtp_init_primary &&
vtable->vtp_init_primary(pri, tpn, ai, tags, return_culprit) < 0)
;
else if (tport_setname(tp, vtable->vtp_name, ai, tpn->tpn_canon) == -1)
*return_culprit = "tport_setname";
else if (tpn->tpn_ident &&
!(tp->tp_name->tpn_ident = su_strdup(tp->tp_home, tpn->tpn_ident)))
*return_culprit = "alloc ident";
else
return pri; /* Success */
save_errno = su_errno();
tport_zap_primary(pri);
su_seterrno(save_errno);
return NULL;
}
/** Destroy a primary transport and its secondary transports. @internal */
static
void tport_zap_primary(tport_primary_t *pri)
{
tport_primary_t **prip;
if (pri == NULL)
return;
assert(tport_is_primary(pri->pri_primary));
if (pri->pri_vtable->vtp_deinit_primary)
pri->pri_vtable->vtp_deinit_primary(pri);
while (pri->pri_open)
tport_zap_secondary(pri->pri_open);
while (pri->pri_closed)
tport_zap_secondary(pri->pri_closed);
/* We have just a single-linked list for primary transports */
for (prip = &pri->pri_master->mr_primaries;
*prip != pri;
prip = &(*prip)->pri_next)
assert(*prip);
*prip = pri->pri_next;
tport_zap_secondary((tport_t *)pri);
}
/**Create a primary transport object with socket.
*
* Creates a primary transport object with a server socket, and then
* registers the socket with suitable events to the root.
*
* @param dad parent (master or primary) transport object
* @param ai pointer to addrinfo structure
* @param canon canonical name of node
* @param protoname name of the protocol
*/
static
tport_primary_t *tport_listen(tport_master_t *mr,
tport_vtable_t const *vtable,
tp_name_t tpn[1],
su_addrinfo_t *ai,
tagi_t *tags)
{
tport_primary_t *pri = NULL;
int err;
int errlevel = 3;
char buf[TPORT_HOSTPORTSIZE];
char const *protoname = vtable->vtp_name;
char const *culprit = "unknown";
su_sockaddr_t *su = (void *)ai->ai_addr;
/* Log an error, return error */
#define TPORT_LISTEN_ERROR(errno, what) \
((void)(err = errno, \
((err == EADDRINUSE || err == EAFNOSUPPORT || \
err == ESOCKTNOSUPPORT || err == EPROTONOSUPPORT || \
err == ENOPROTOOPT ? 7 : 3) < SU_LOG_LEVEL ? \
su_llog(tport_log, errlevel, \
"%s(%p): %s(pf=%d %s/%s): %s\n", \
__func__, pri ? (void *)pri : (void *)mr, what, \
ai->ai_family, protoname, \
tport_hostport(buf, sizeof(buf), su, 2), \
su_strerror(err)) : (void)0), \
tport_zap_primary(pri), \
su_seterrno(err)), \
(void *)NULL)
/* Create a primary transport object for another transport. */
pri = tport_alloc_primary(mr, vtable, tpn, ai, tags, &culprit);
if (pri == NULL)
return TPORT_LISTEN_ERROR(errno, culprit);
if (pri->pri_primary->tp_socket != INVALID_SOCKET) {
int index = 0;
tport_t *tp = pri->pri_primary;
su_wait_t wait[1] = { SU_WAIT_INIT };
if (su_wait_create(wait, tp->tp_socket, tp->tp_events) == -1)
return TPORT_LISTEN_ERROR(su_errno(), "su_wait_create");
/* Register receiving or accepting function with events specified above */
index = su_root_register(mr->mr_root, wait, tport_wakeup_pri, tp, 0);
if (index == -1) {
su_wait_destroy(wait);
return TPORT_LISTEN_ERROR(su_errno(), "su_root_register");
}
tp->tp_index = index;
}
pri->pri_primary->tp_has_connection = 0;
SU_DEBUG_5(("%s(%p): %s " TPN_FORMAT "\n",
__func__, (void *)pri, "listening at",
TPN_ARGS(pri->pri_primary->tp_name)));
return pri;
}
int tport_bind_socket(int socket,
su_addrinfo_t *ai,
char const **return_culprit)
{
su_sockaddr_t *su = (su_sockaddr_t *)ai->ai_addr;
socklen_t sulen = (socklen_t)(ai->ai_addrlen);
if (bind(socket, ai->ai_addr, sulen) == -1) {
return *return_culprit = "bind", -1;
}
if (getsockname(socket, &su->su_sa, &sulen) == SOCKET_ERROR) {
return *return_culprit = "getsockname", -1;
}
ai->ai_addrlen = sulen;
#if defined (__linux__) && defined (SU_HAVE_IN6)
if (ai->ai_family == AF_INET6) {
if (!SU_SOCKADDR_INADDR_ANY(su) &&
(IN6_IS_ADDR_V4MAPPED(&su->su_sin6.sin6_addr) ||
IN6_IS_ADDR_V4COMPAT(&su->su_sin6.sin6_addr))) {
su_sockaddr_t su0[1];
memcpy(su0, su, sizeof su0);
memset(su, 0, ai->ai_addrlen = sizeof su->su_sin);
su->su_family = ai->ai_family = AF_INET;
su->su_port = su0->su_port;
#ifndef IN6_V4MAPPED_TO_INADDR
#define IN6_V4MAPPED_TO_INADDR(in6, in4) \
memcpy((in4), 12 + (uint8_t *)(in6), sizeof(struct in_addr))
#endif
IN6_V4MAPPED_TO_INADDR(&su0->su_sin6.sin6_addr, &su->su_sin.sin_addr);
}
}
#endif
return 0;
}
/** Indicate stack that a transport has been updated */
void tport_has_been_updated(tport_t *self)
{
self->tp_pri->pri_updating = 0;
if (self->tp_master->mr_tpac->tpac_address)
self->tp_master->mr_tpac->tpac_address(self->tp_master->mr_stack, self);
}
static
int tport_set_events(tport_t *self, int set, int clear)
{
int events;
if (self == NULL)
return -1;
events = (self->tp_events | set) & ~clear;
self->tp_events = events;
if (self->tp_pri->pri_vtable->vtp_set_events)
return self->tp_pri->pri_vtable->vtp_set_events(self);
SU_DEBUG_7(("tport_set_events(%p): events%s%s%s\n", (void *)self,
(events & SU_WAIT_IN) ? " IN" : "",
(events & SU_WAIT_OUT) ? " OUT" : "",
SU_WAIT_CONNECT != SU_WAIT_OUT &&
(events & SU_WAIT_CONNECT) ? " CONNECT" : ""));
return
su_root_eventmask(self->tp_master->mr_root,
self->tp_index,
self->tp_socket,
self->tp_events = events);
}
/**Allocate a secondary transport. @internal
*
* Create a secondary transport object. The new transport initally shares
* parameters structure with the original transport.
*
* @param pri primary transport
* @param socket socket for transport
* @parma accepted true if the socket was accepted from server socket
*
* @return
* Pointer to the newly created transport, or NULL upon an error.
*
* @note The socket is always closed upon error.
*/
tport_t *tport_alloc_secondary(tport_primary_t *pri,
int socket,
int accepted,
char const **return_reason)
{
tport_master_t *mr = pri->pri_master;
tport_t *self;
self = su_home_clone(mr->mr_home, pri->pri_vtable->vtp_secondary_size);
if (self) {
SU_DEBUG_7(("%s(%p): new secondary tport %p\n",
__func__, (void *)pri, (void *)self));
self->tp_refs = -1; /* Freshly allocated */
self->tp_master = mr;
self->tp_pri = pri;
self->tp_params = pri->pri_params;
self->tp_accepted = accepted != 0;
self->tp_reusable = pri->pri_primary->tp_reusable;
self->tp_magic = pri->pri_primary->tp_magic;
self->tp_addrinfo->ai_addr = (void *)self->tp_addr;
self->tp_socket = socket;
self->tp_timer = su_timer_create(su_root_task(mr->mr_root), 0);
self->tp_stime = self->tp_ktime = self->tp_rtime = su_now();
if (pri->pri_vtable->vtp_init_secondary &&
pri->pri_vtable->vtp_init_secondary(self, socket, accepted,
return_reason) < 0) {
if (pri->pri_vtable->vtp_deinit_secondary)
pri->pri_vtable->vtp_deinit_secondary(self);
su_home_zap(self->tp_home);
return NULL;
}
/* Set IP TOS if it is set in primary */
tport_set_tos(socket,
pri->pri_primary->tp_addrinfo,
pri->pri_params->tpp_tos);
}
else {
su_close(socket);
*return_reason = "malloc";
}
return self;
}
/** Create a connected transport object with socket.
*
* The function tport_connect() creates a secondary transport with a
* connected socket. It registers the socket with suitable events to the
* root.
*
* @param pri primary transport object
* @param ai pointer to addrinfo structure
* @param tpn canonical name of node
*/
static
tport_t *tport_connect(tport_primary_t *pri,
su_addrinfo_t *ai,
tp_name_t const *tpn)
{
tport_t *tp;
if (ai == NULL || ai->ai_addrlen > sizeof (pri->pri_primary->tp_addr))
return NULL;
if (pri->pri_vtable->vtp_connect)
return pri->pri_vtable->vtp_connect(pri, ai, tpn);
tp = tport_base_connect(pri, ai, ai, tpn);
if (tp)
tport_set_secondary_timer(tp);
return tp;
}
/**Create a connected transport object with socket.
*
* The function tport_connect() creates a secondary transport with a
* connected socket. It registers the socket with suitable events to the
* root.
*
* @param pri primary transport object
* @param ai pointer to addrinfo structure describing socket
* @param real_ai pointer to addrinfo structure describing real target
* @param tpn canonical name of node
*/
tport_t *tport_base_connect(tport_primary_t *pri,
su_addrinfo_t *ai,
su_addrinfo_t *real_ai,
tp_name_t const *tpn)
{
tport_master_t *mr = pri->pri_master;
tport_t *self = NULL;
su_socket_t s, server_socket;
su_wait_t wait[1] = { SU_WAIT_INIT };
su_wakeup_f wakeup = tport_wakeup;
int index = 0;
int events = SU_WAIT_IN | SU_WAIT_ERR;
int err;
unsigned errlevel = 3;
char buf[TPORT_HOSTPORTSIZE];
char const *what;
/* Log an error, return error */
#define TPORT_CONNECT_ERROR(errno, what) \
return \
((void)(err = errno, \
su_wait_destroy(wait), \
(SU_LOG_LEVEL >= errlevel ? \
su_llog(tport_log, errlevel, \
"%s(%p): %s(pf=%d %s/%s): %s\n", \
__func__, (void *)pri, #what, ai->ai_family, \
tpn->tpn_proto, \
tport_hostport(buf, sizeof(buf), \
(void *)ai->ai_addr, 2), \
su_strerror(err)) : (void)0), \
tport_zap_secondary(self), \
su_seterrno(err)), \
(void *)NULL)
s = su_socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
if (s == INVALID_SOCKET)
TPORT_CONNECT_ERROR(su_errno(), "socket");
what = "tport_alloc_secondary";
if ((self = tport_alloc_secondary(pri, s, 0, &what)) == NULL)
TPORT_CONNECT_ERROR(errno, what);
self->tp_conn_orient = 1;
if ((server_socket = pri->pri_primary->tp_socket) != INVALID_SOCKET) {
su_sockaddr_t susa;
socklen_t susalen = sizeof(susa);
/* Bind this socket to same IP address as the primary server socket */
if (getsockname(server_socket, &susa.su_sa, &susalen) < 0) {
SU_DEBUG_3(("%s(%p): getsockname(): %s\n",
__func__, (void *)self, su_strerror(su_errno())));
}
else {
susa.su_port = 0;
if (bind(s, &susa.su_sa, susalen) < 0) {
SU_DEBUG_3(("%s(%p): bind(local-ip): %s\n",
__func__, (void *)self, su_strerror(su_errno())));
}
}
}
/* Set sockname for the tport */
if (tport_setname(self, tpn->tpn_proto, real_ai, tpn->tpn_canon) == -1)
TPORT_CONNECT_ERROR(su_errno(), tport_setname);
/* Try to have a non-blocking connect().
* The su_wait_create() below makes the socket non-blocking anyway. */
su_setblocking(s, 0);
if (connect(s, ai->ai_addr, (socklen_t)(ai->ai_addrlen)) == SOCKET_ERROR) {
err = su_errno();
if (!su_is_blocking(err))
TPORT_CONNECT_ERROR(err, connect);
events = SU_WAIT_CONNECT | SU_WAIT_ERR;
wakeup = tport_connected;
what = "connecting";
}
else {
what = "connected";
self->tp_is_connected = 1;
}
if (su_wait_create(wait, s, self->tp_events = events) == -1)
TPORT_CONNECT_ERROR(su_errno(), su_wait_create);
/* Register receiving function with events specified above */
if ((index = su_root_register(mr->mr_root, wait, wakeup, self, 0)) == -1)
TPORT_CONNECT_ERROR(su_errno(), su_root_register);
self->tp_index = index;
if (ai == real_ai) {
SU_DEBUG_5(("%s(%p): %s to " TPN_FORMAT "\n",
__func__, (void *)self, what, TPN_ARGS(self->tp_name)));
}
else {
SU_DEBUG_5(("%s(%p): %s via %s to " TPN_FORMAT "\n",
__func__, (void *)self, what,
tport_hostport(buf, sizeof(buf), (void *)ai->ai_addr, 2),
TPN_ARGS(self->tp_name)));
}
tprb_append(&pri->pri_open, self);
return self;
}
/** Destroy a secondary transport. @internal */
void tport_zap_secondary(tport_t *self)
{
tport_master_t *mr;
if (self == NULL)
return;
/* Remove from rbtree */
if (!tport_is_closed(self))
tprb_remove(&self->tp_pri->pri_open, self);
else
tplist_remove(&self->tp_pri->pri_closed, self);
if (self->tp_timer)
su_timer_destroy(self->tp_timer), self->tp_timer = NULL;
/* Do not deinit primary as secondary! */
if (tport_is_secondary(self) &&
self->tp_pri->pri_vtable->vtp_deinit_secondary)
self->tp_pri->pri_vtable->vtp_deinit_secondary(self);
if (self->tp_msg) {
msg_destroy(self->tp_msg), self->tp_msg = NULL;
SU_DEBUG_3(("%s(%p): zapped partially received message\n",
__func__, (void *)self));
}
if (tport_has_queued(self)) {
size_t n = 0, i, N = self->tp_params->tpp_qsize;
for (i = self->tp_qhead; self->tp_queue[i]; i = (i + 1) % N) {
msg_destroy(self->tp_queue[i]), self->tp_queue[i] = NULL;
n++;
}
SU_DEBUG_3(("%s(%p): zapped %lu queued messages\n",
__func__, (void *)self, (LU)n));
}
if (self->tp_pused) {
SU_DEBUG_3(("%s(%p): zapped while pending\n",
__func__, (void *)self));
}
mr = self->tp_master;
#if HAVE_SOFIA_STUN
tport_stun_server_remove_socket(self);
#endif
if (self->tp_index)
su_root_deregister(mr->mr_root, self->tp_index);
self->tp_index = 0;
if (self->tp_socket != INVALID_SOCKET)
su_close(self->tp_socket);
self->tp_socket = INVALID_SOCKET;
su_home_zap(self->tp_home);
}
/** Create a new reference to a transport object. */
tport_t *tport_ref(tport_t *tp)
{
if (tp) {
if (tp->tp_refs >= 0)
tp->tp_refs++;
else if (tp->tp_refs == -1)
tp->tp_refs = 1;
}
return tp;
}
/** Destroy reference to a transport object. */
void tport_unref(tport_t *tp)
{
if (tp == NULL || tp->tp_refs <= 0)
return;
if (--tp->tp_refs > 0)
return;
if (!tport_is_secondary(tp))
return;
if (tp->tp_params->tpp_idle == 0)
tport_close(tp);
tport_set_secondary_timer(tp);
}
/** Create a new reference to transport object. */
tport_t *tport_incref(tport_t *tp)
{
return tport_ref(tp);
}
/** Destroy a transport reference. */
void tport_decref(tport_t **ttp)
{
assert(ttp);
if (*ttp) {
tport_unref(*ttp);
*ttp = NULL;
}
}
/** Get transport parameters.
*
* @param self pointer to a transport object
* @param tag,value,... list of tags
*
* @TAGS
* TPTAG_MTU_REF(), TPTAG_QUEUESIZE_REF(), TPTAG_IDLE_REF(),
* TPTAG_TIMEOUT_REF(), TPTAG_KEEPALIVE_REF(), TPTAG_PINGPONG_REF(),
* TPTAG_PONG2PING_REF(), TPTAG_DEBUG_DROP_REF(), TPTAG_THRPSIZE_REF(),
* TPTAG_THRPRQSIZE_REF(), TPTAG_SIGCOMP_LIFETIME_REF(),
* TPTAG_CONNECT_REF(), TPTAG_SDWN_ERROR_REF(), TPTAG_REUSE_REF(),
* TPTAG_STUN_SERVER_REF(), TPTAG_PUBLIC_REF() and TPTAG_TOS_REF().
*/
int tport_get_params(tport_t const *self,
tag_type_t tag, tag_value_t value, ...)
{
ta_list ta;
int n;
tport_params_t const *tpp;
tport_primary_t const *pri = self->tp_pri;
int connect;
if (self == NULL)
return su_seterrno(EINVAL);
tpp = self->tp_params;
ta_start(ta, tag, value);
connect = tpp->tpp_conn_orient
/* Only dgram primary is *not* connection-oriented */
|| !tport_is_primary(self) || !tport_is_dgram(self);
n = tl_tgets(ta_args(ta),
TPTAG_MTU((usize_t)tpp->tpp_mtu),
TPTAG_REUSE(self->tp_reusable),
TPTAG_CONNECT(connect),
TPTAG_QUEUESIZE(tpp->tpp_qsize),
TPTAG_IDLE(tpp->tpp_idle),
TPTAG_TIMEOUT(tpp->tpp_timeout),
TPTAG_KEEPALIVE(tpp->tpp_keepalive),
TPTAG_PINGPONG(tpp->tpp_pingpong),
TPTAG_PONG2PING(tpp->tpp_pong2ping),
TPTAG_SDWN_ERROR(tpp->tpp_sdwn_error),
TPTAG_DEBUG_DROP(tpp->tpp_drop),
TPTAG_THRPSIZE(tpp->tpp_thrpsize),
TPTAG_THRPRQSIZE(tpp->tpp_thrprqsize),
TPTAG_SIGCOMP_LIFETIME(tpp->tpp_sigcomp_lifetime),
TPTAG_STUN_SERVER(tpp->tpp_stun_server),
TAG_IF(pri, TPTAG_PUBLIC(pri ? pri->pri_public : 0)),
TPTAG_TOS(tpp->tpp_tos),
TAG_END());
ta_end(ta);
return n;
}
/** Set transport parameters.
*
* @param self pointer to a transport object
* @param tag,value,... list of tags
*
* @TAGS
* TPTAG_MTU(), TPTAG_QUEUESIZE(), TPTAG_IDLE(), TPTAG_TIMEOUT(),
* TPTAG_KEEPALIVE(), TPTAG_PINGPONG(), TPTAG_PONG2PING(),
* TPTAG_DEBUG_DROP(), TPTAG_THRPSIZE(), TPTAG_THRPRQSIZE(),
* TPTAG_SIGCOMP_LIFETIME(), TPTAG_CONNECT(), TPTAG_SDWN_ERROR(),
* TPTAG_REUSE(), TPTAG_STUN_SERVER(), and TPTAG_TOS().
*/
int tport_set_params(tport_t *self,
tag_type_t tag, tag_value_t value, ...)
{
ta_list ta;
int n;
tport_params_t tpp[1], *tpp0;
usize_t mtu;
int connect, sdwn_error, reusable, stun_server, pong2ping;
if (self == NULL)
return su_seterrno(EINVAL);
memcpy(tpp, tpp0 = self->tp_params, sizeof tpp);
mtu = tpp->tpp_mtu;
connect = tpp->tpp_conn_orient;
sdwn_error = tpp->tpp_sdwn_error;
reusable = self->tp_reusable;
stun_server = tpp->tpp_stun_server;
pong2ping = tpp->tpp_pong2ping;
ta_start(ta, tag, value);
n = tl_gets(ta_args(ta),
TPTAG_MTU_REF(mtu),
TAG_IF(!self->tp_queue, TPTAG_QUEUESIZE_REF(tpp->tpp_qsize)),
TPTAG_IDLE_REF(tpp->tpp_idle),
TPTAG_TIMEOUT_REF(tpp->tpp_timeout),
TPTAG_KEEPALIVE_REF(tpp->tpp_keepalive),
TPTAG_PINGPONG_REF(tpp->tpp_pingpong),
TPTAG_PONG2PING_REF(pong2ping),
TPTAG_DEBUG_DROP_REF(tpp->tpp_drop),
TPTAG_THRPSIZE_REF(tpp->tpp_thrpsize),
TPTAG_THRPRQSIZE_REF(tpp->tpp_thrprqsize),
TPTAG_SIGCOMP_LIFETIME_REF(tpp->tpp_sigcomp_lifetime),
TPTAG_CONNECT_REF(connect),
TPTAG_SDWN_ERROR_REF(sdwn_error),
TPTAG_REUSE_REF(reusable),
TPTAG_STUN_SERVER_REF(stun_server),
TPTAG_TOS_REF(tpp->tpp_tos),
TAG_END());
ta_end(ta);
if (n == 0)
return 0;
if (tpp->tpp_idle > 0 && tpp->tpp_idle < 100)
tpp->tpp_idle = 100;
if (tpp->tpp_timeout < 100)
tpp->tpp_timeout = 100;
if (tpp->tpp_drop > 1000)
tpp->tpp_drop = 1000;
if (tpp->tpp_thrprqsize > 0)
tpp->tpp_thrprqsize = tpp0->tpp_thrprqsize;
if (tpp->tpp_sigcomp_lifetime != 0 && tpp->tpp_sigcomp_lifetime < 30)
tpp->tpp_sigcomp_lifetime = 30;
if (tpp->tpp_qsize >= 1000)
tpp->tpp_qsize = 1000;
if (mtu > UINT_MAX)
mtu = UINT_MAX;
tpp->tpp_mtu = (unsigned)mtu;
/* Currently only primary UDP transport can *not* be connection oriented */
tpp->tpp_conn_orient = connect;
tpp->tpp_sdwn_error = sdwn_error;
self->tp_reusable = reusable;
tpp->tpp_stun_server = stun_server;
tpp->tpp_pong2ping = pong2ping;
if (memcmp(tpp0, tpp, sizeof tpp) == 0)
return n;
if (tport_is_secondary(self) &&
self->tp_params == self->tp_pri->pri_primary->tp_params) {
tpp0 = su_zalloc(self->tp_home, sizeof *tpp0); if (!tpp0) return -1;
self->tp_params = tpp0;
}
memcpy(tpp0, tpp, sizeof tpp);
if (tport_is_secondary(self))
tport_set_secondary_timer(self);
return n;
}
extern tport_vtable_t const tport_udp_vtable;
extern tport_vtable_t const tport_tcp_vtable;
extern tport_vtable_t const tport_tls_vtable;
extern tport_vtable_t const tport_sctp_vtable;
extern tport_vtable_t const tport_udp_client_vtable;
extern tport_vtable_t const tport_tcp_client_vtable;
extern tport_vtable_t const tport_sctp_client_vtable;
extern tport_vtable_t const tport_tls_client_vtable;
extern tport_vtable_t const tport_http_connect_vtable;
extern tport_vtable_t const tport_threadpool_vtable;
#define TPORT_NUMBER_OF_TYPES 64
tport_vtable_t const *tport_vtables[TPORT_NUMBER_OF_TYPES + 1] =
{
#if HAVE_SOFIA_NTH
&tport_http_connect_vtable,
#endif
#if HAVE_TLS
&tport_tls_client_vtable,
&tport_tls_vtable,
#endif
#if HAVE_SCTP /* SCTP is broken */
&tport_sctp_client_vtable,
&tport_sctp_vtable,
#endif
&tport_tcp_client_vtable,
&tport_tcp_vtable,
&tport_udp_client_vtable,
&tport_udp_vtable,
#if 0
&tport_threadpool_vtable,
#endif
#if HAVE_SOFIA_STUN
&tport_stun_vtable,
#endif
};
/** Register new transport vtable */
int tport_register_type(tport_vtable_t const *vtp)
{
int i;
for (i = TPORT_NUMBER_OF_TYPES; i >= 0; i--) {
if (tport_vtables[i] == NULL) {
tport_vtables[i] = vtp;
return 0;
}
}
su_seterrno(ENOMEM);
return -1;
}
/**Get a vtable for given protocol */
tport_vtable_t const *tport_vtable_by_name(char const *protoname,
enum tport_via public)
{
int i;
for (i = TPORT_NUMBER_OF_TYPES; i >= 0; i--) {
tport_vtable_t const *vtable = tport_vtables[i];
if (vtable == NULL)
continue;
if (vtable->vtp_public != public)
continue;
if (strcasecmp(vtable->vtp_name, protoname))
continue;
assert(vtable->vtp_pri_size >= sizeof (tport_primary_t));
assert(vtable->vtp_secondary_size >= sizeof (tport_t));
return vtable;
}
return NULL;
}
#if 0
tport_set_f const *tport_set_methods[TPORT_NUMBER_OF_TYPES + 1] =
{
tport_server_bind_set,
tport_client_bind_set,
tport_threadpool_set,
#if HAVE_SOFIA_NTH
tport_http_connect_set,
#endif
#if HAVE_TLS
tport_tls_set,
#endif
NULL
};
int tport_bind_set(tport_master_t *mr,
tp_name_t const *tpn,
char const * const transports[],
tagi_t const *taglist,
tport_set_t **return_set,
int set_size)
{
int i;
for (i = TPORT_NUMBER_OF_TYPES; i >= 0; i--) {
tport_set_f const *perhaps = tport_vtables[i];
int result;
if (perhaps == NULL)
continue;
result = perhaps(mr, tpn, transports, taglist, return_set, set_size);
if (result != 0)
return result;
}
return 0;
}
#endif
/** Bind transport objects.
*
* @param self pointer to a transport object
* @param tpn desired transport address
* @param transports list of protocol names supported by stack
* @param tag,value,... tagged argument list
*
* @TAGS
* TPTAG_SERVER(), TPTAG_PUBLIC(), TPTAG_IDENT(), TPTAG_HTTP_CONNECT(),
* TPTAG_CERTIFICATE(), TPTAG_TLS_VERSION(), and tags used with
* tport_set_params(), especially TPTAG_QUEUESIZE().
*/
int tport_tbind(tport_t *self,
tp_name_t const *tpn,
char const * const transports[],
tag_type_t tag, tag_value_t value, ...)
{
ta_list ta;
int server = 1, retval, public = 0;
tp_name_t mytpn[1];
tport_master_t *mr;
char const *http_connect = NULL;
if (self == NULL || tport_is_secondary(self) ||
tpn == NULL || transports == NULL) {
su_seterrno(EINVAL);
return -1;
}
*mytpn = *tpn;
if (mytpn->tpn_ident == NULL)
mytpn->tpn_ident = self->tp_ident;
ta_start(ta, tag, value);
tl_gets(ta_args(ta),
TPTAG_SERVER_REF(server),
TPTAG_PUBLIC_REF(public),
TPTAG_IDENT_REF(mytpn->tpn_ident),
TPTAG_HTTP_CONNECT_REF(http_connect),
TAG_END());
mr = self->tp_master; assert(mr);
if (http_connect && public == 0)
public = tport_type_connect;
if (public && public != tport_type_stun)
server = 0;
if (server)
retval = tport_bind_server(mr, mytpn, transports, public, ta_args(ta));
else
retval = tport_bind_client(mr, mytpn, transports, public, ta_args(ta));
ta_end(ta);
return retval;
}
/** Bind primary transport objects used by a client-only application.
* @internal
*/
int tport_bind_client(tport_master_t *mr,
tp_name_t const *tpn,
char const * const transports[],
enum tport_via public,
tagi_t *tags)
{
int i;
tport_primary_t *pri = NULL, **tbf;
tp_name_t tpn0[1] = {{ "*", "*", "*", "*", NULL, NULL }};
char const *why = "unknown";
tport_vtable_t const *vtable;
if (public == tport_type_local)
public = tport_type_client;
SU_DEBUG_5(("%s(%p) to " TPN_FORMAT "\n",
__func__, (void *)mr, TPN_ARGS(tpn)));
memset(tpn0, 0, sizeof(tpn0));
for (tbf = &mr->mr_primaries; *tbf; tbf = &(*tbf)->pri_next)
;
for (i = 0; transports[i]; i++) {
su_addrinfo_t hints[1];
char const *proto = transports[i];
if (strcmp(proto, tpn->tpn_proto) != 0 &&
strcmp(tpn->tpn_proto, tpn_any) != 0)
continue;
vtable = tport_vtable_by_name(proto, public);
if (!vtable)
continue;
/* Resolve protocol, skip unknown transport protocols */
if (getprotohints(hints, proto, AI_PASSIVE) < 0)
continue;
tpn0->tpn_proto = proto;
tpn0->tpn_comp = tpn->tpn_comp;
tpn0->tpn_ident = tpn->tpn_ident;
hints->ai_canonname = "*";
if (!(pri = tport_alloc_primary(mr, vtable, tpn0, hints, tags, &why)))
break;
pri->pri_public = tport_type_client; /* XXX */
}
if (!pri) {
SU_DEBUG_3(("tport_alloc_primary: %s failed\n", why));
tport_zap_primary(*tbf);
}
return pri ? 0 : -1;
}
/** Bind primary transport objects used by a server application. */
int tport_bind_server(tport_master_t *mr,
tp_name_t const *tpn,
char const * const transports[],
enum tport_via public,
tagi_t *tags)
{
char hostname[256];
char const *canon = NULL, *host, *service;
int error = 0, not_supported, family = 0;
tport_primary_t *pri = NULL, **tbf;
su_addrinfo_t *ai, *res = NULL;
unsigned port, port0, port1, old;
unsigned short step = 0;
bind6only_check(mr);
(void)hostname;
SU_DEBUG_5(("%s(%p) to " TPN_FORMAT "\n",
__func__, (void *)mr, TPN_ARGS(tpn)));
if (tpn->tpn_host == NULL || strcmp(tpn->tpn_host, tpn_any) == 0) {
/* Use a local IP address */
host = NULL;
}
#ifdef SU_HAVE_IN6
else if (tpn->tpn_host && tpn->tpn_host[0] == '[') {
/* Remove [] around IPv6 addresses. */
host = strcpy(hostname, tpn->tpn_host + 1);
hostname[strlen(hostname) - 1] = '\0';
}
#endif
else
host = tpn->tpn_host;
if (tpn->tpn_port != NULL && strlen(tpn->tpn_port) > 0 &&
strcmp(tpn->tpn_port, tpn_any) != 0)
service = tpn->tpn_port;
else
service = "";
if (host && (strcmp(host, "0.0.0.0") == 0 || strcmp(host, "0") == 0))
host = NULL, family = AF_INET;
#if SU_HAVE_IN6
else if (host && strcmp(host, "::") == 0)
host = NULL, family = AF_INET6;
#endif
if (tpn->tpn_canon && strcmp(tpn->tpn_canon, tpn_any) &&
(host || tpn->tpn_canon != tpn->tpn_host))
canon = tpn->tpn_canon;
if (tport_server_addrinfo(mr, canon, family,
host, service, tpn->tpn_proto,
transports, &res) < 0)
return -1;
for (tbf = &mr->mr_primaries; *tbf; tbf = &(*tbf)->pri_next)
;
port = port0 = port1 = ntohs(((su_sockaddr_t *)res->ai_addr)->su_port);
error = EPROTONOSUPPORT;
/*
* Loop until we can bind all the transports requested
* by the transport user to the same port.
*/
for (;;) {
for (ai = res; ai; ai = ai->ai_next) {
tp_name_t tpname[1];
su_addrinfo_t ainfo[1];
su_sockaddr_t su[1];
tport_vtable_t const *vtable;
vtable = tport_vtable_by_name(ai->ai_canonname, public);
if (!vtable)
continue;
tport_addrinfo_copy(ainfo, su, sizeof su, ai);
ainfo->ai_canonname = (char *)canon;
su->su_port = htons(port);
memcpy(tpname, tpn, sizeof tpname);
tpname->tpn_canon = canon;
tpname->tpn_host = host;
SU_DEBUG_9(("%s(%p): calling tport_listen for %s\n",
__func__, (void *)mr, ai->ai_canonname));
pri = tport_listen(mr, vtable, tpname, ainfo, tags);
if (!pri) {
switch (error = su_errno()) {
case EADDRNOTAVAIL: /* Not our address */
case ENOPROTOOPT: /* Protocol not supported */
case ESOCKTNOSUPPORT: /* Socket type not supported */
continue;
default:
break;
}
break;
}
not_supported = 0;
if (port0 == 0 && port == 0) {
port = port1 = ntohs(su->su_port);
assert(public != tport_type_server || port != 0);
}
}
if (ai == NULL)
break;
while (*tbf)
tport_zap_primary(*tbf);
if (error != EADDRINUSE || port0 != 0 || port == 0)
break;
while (step == 0) {
/* step should be relative prime to 65536 - 1024 */
/* 65536 - 1024 = 7 * 3 * 3 * 1024 */
step = su_randint(1, 65535 - 1024 - 1) | 1;
if (step % 3 == 0)
step = (step + 2) % (65536 - 1024);
if (step % 7 == 0)
step = (step + 2) % (65536 - 1024);
}
old = port; port += step; if (port >= 65536) port -= (65536 - 1024);
if (port == port1) /* All ports in use! */
break;
SU_DEBUG_3(("%s(%p): cannot bind all transports to port %u, trying %u\n",
__func__, (void *)mr, old, port));
}
tport_freeaddrinfo(res);
if (!*tbf) {
su_seterrno(error);
return -1;
}
return 0;
}
/** Check if we can bind to IPv6 separately from IPv4 bind */
static
int bind6only_check(tport_master_t *mr)
{
int retval = 0;
#if SU_HAVE_IN6
su_sockaddr_t su[1], su4[1];
socklen_t sulen, su4len;
int s6, s4;
if (mr->mr_boundserver)
return 0;
s4 = su_socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
s6 = su_socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
memset(su, 0, sizeof *su);
su->su_len = sulen = (sizeof su->su_sin6);
su->su_family = AF_INET6;
memset(su4, 0, sizeof *su4);
su4->su_len = su4len = (sizeof su->su_sin);
su4->su_family = AF_INET;
if (bind(s6, &su->su_sa, sulen) < 0)
;
else if (getsockname(s6, &su->su_sa, &sulen) < 0)
;
else if ((su4->su_port = su->su_port) != 0 &&
bind(s4, &su4->su_sa, su4len) == 0)
retval = 1;
su_close(s6), su_close(s4);
mr->mr_bindv6only = retval;
mr->mr_boundserver = 1;
#endif
return retval;
}
/* Number of supported transports */
#define TPORT_N (8)
/** Return list of addrinfo structures matching to
* canon/host/service/protocol
*/
static
int tport_server_addrinfo(tport_master_t *mr,
char const *canon,
int family,
char const *host,
char const *service,
char const *protocol,
char const * const transports[],
su_addrinfo_t **return_addrinfo)
{
int i, N;
su_addrinfo_t hints[TPORT_N + 1];
*return_addrinfo = NULL;
/*
* Resolve all the transports requested by the protocol
*/
for (i = 0, N = 0; transports[i] && N < TPORT_N; i++) {
su_addrinfo_t *ai = &hints[N];
if (strcasecmp(transports[i], protocol) != 0 &&
strcmp(protocol, tpn_any) != 0)
continue;
/* Resolve protocol, skip unknown transport protocols. */
if (getprotohints(ai, transports[i], AI_PASSIVE) < 0)
continue;
ai->ai_family = family;
ai->ai_next = &hints[++N];
}
if (N == 0)
return su_seterrno(EPROTONOSUPPORT);
if (transports[i] /* Too many protocols */)
return su_seterrno(ENOMEM);
hints[N - 1].ai_next = NULL;
if (host) {
int error = tport_getaddrinfo(host, service, hints, return_addrinfo);
if (error || !*return_addrinfo) {
SU_DEBUG_3(("%s(%p): su_getaddrinfo(%s, %s) for %s: %s\n",
__func__, (void *)mr,
host ? host : "\"\"", service, protocol,
su_gai_strerror(error)));
return su_seterrno(error != EAI_MEMORY ? ENOENT : ENOMEM);
}
return 0;
}
return tport_get_local_addrinfo(mr, service, hints, return_addrinfo);
}
/** Convert localinfo into addrinfo */
static
int
tport_get_local_addrinfo(tport_master_t *mr,
char const *port,
su_addrinfo_t const *hints,
su_addrinfo_t **return_ai)
{
int error, family;
su_localinfo_t lihints[1] = {{ 0 }};
su_localinfo_t *li, *li_result;
su_addrinfo_t const *h;
su_addrinfo_t *ai, **prev;
su_sockaddr_t *su;
unsigned long lport = 0;
char *rest;
prev = return_ai, *prev = NULL;
if (port) {
lport = strtoul(port, &rest, 10);
if (lport >= 65536) {
su_seterrno(EINVAL);
return -1;
}
}
family = hints->ai_family;
for (h = hints->ai_next; h && family; h = h->ai_next)
if (h->ai_family != family)
family = 0;
lihints->li_flags = 0;
lihints->li_family = family;
lihints->li_scope = LI_SCOPE_GLOBAL | LI_SCOPE_SITE | LI_SCOPE_HOST;
error = su_getlocalinfo(lihints, &li_result);
if (error) {
#if SU_HAVE_IN6
SU_DEBUG_3(("%s(%p): su_getlocalinfo() for %s address: %s\n",
__func__, (void *)mr,
family == AF_INET6 ? "ip6"
: family == AF_INET ? "ip4" : "ip",
su_gli_strerror(error)));
#else
SU_DEBUG_3(("%s(%p): su_getlocalinfo() for %s address: %s\n",
__func__, (void *)mr,
family == AF_INET ? "ip4" : "ip",
su_gli_strerror(error)));
#endif
su_seterrno(ENOENT);
return -1;
}
for (li = li_result; li; li = li->li_next) {
for (h = hints; h; h = h->ai_next) {
if (h->ai_family && h->ai_family != li->li_family)
continue;
ai = calloc(1, sizeof *ai + li->li_addrlen);
if (ai == NULL)
break;
*prev = ai, prev = &ai->ai_next;
ai->ai_flags = AI_PASSIVE | TP_AI_ANY;
ai->ai_family = li->li_family;
ai->ai_socktype = h->ai_socktype;
ai->ai_protocol = h->ai_protocol;
ai->ai_canonname = h->ai_canonname;
ai->ai_addr = memcpy(ai + 1, li->li_addr,
ai->ai_addrlen = li->li_addrlen);
su = (void *)ai->ai_addr;
su->su_port = htons(lport);
}
}
su_freelocalinfo(li_result);
if (li) {
tport_freeaddrinfo(*return_ai);
su_seterrno(ENOMEM);
return -1;
}
if (*return_ai == NULL) {
su_seterrno(ENOENT);
return -1;
}
return 0;
}
su_inline su_addrinfo_t *get_next_addrinfo(su_addrinfo_t **all);
/** Translate address and service.
*
* This is a getaddrinfo() supporting multiple hints in a list.
*/
int tport_getaddrinfo(char const *node, char const *service,
su_addrinfo_t const *hints,
su_addrinfo_t **res)
{
su_addrinfo_t const *h0;
su_addrinfo_t *tbf, **prev;
int error = EAI_SOCKTYPE;
int i, N;
su_addrinfo_t *all[TPORT_N + 1]; /* Lists for all supported transports */
su_addrinfo_t *results[TPORT_N + 1];
void *addr;
int addrlen;
*res = NULL;
for (N = 0, h0 = hints; h0; h0 = h0->ai_next) {
su_addrinfo_t h[1];
*h = *h0, h->ai_next = NULL, h->ai_canonname = NULL;
error = su_getaddrinfo(node, service, h, &all[N]);
results[N] = all[N];
if (error == EAI_SOCKTYPE) {
SU_DEBUG_7(("%s(): su_getaddrinfo(%s, %s) for %s: %s\n",
__func__, node ? node : "\"\"", service,
h0->ai_canonname, su_gai_strerror(error)));
continue;
}
if (error || !all[N])
break;
N++;
}
if (h0)
for (i = 0; i < N; i++)
su_freeaddrinfo(all[i]);
if (error)
return error;
/* Combine all the valid addrinfo structures to a single list */
prev = &tbf, tbf = NULL;
for (;;) {
su_addrinfo_t *ai = NULL, *ai0;
for (i = 0, h0 = hints; i < N; i++, h0 = h0->ai_next) {
if ((ai = get_next_addrinfo(&results[i])))
break;
}
if (i == N)
break;
assert(ai);
addr = SU_ADDR((su_sockaddr_t *)ai->ai_addr);
addrlen = SU_ADDRLEN((su_sockaddr_t *)ai->ai_addr);
/* Copy all the addrinfo structures with same address to the list */
for (; i < N; i++, h0 = h0->ai_next) {
while ((ai0 = get_next_addrinfo(&results[i]))) {
void *a = SU_ADDR((su_sockaddr_t *)ai0->ai_addr);
if (memcmp(addr, a, addrlen)) /* Different address */
break;
results[i] = ai0->ai_next;
ai = calloc(1, sizeof *ai + ai0->ai_addrlen);
if (ai == NULL)
goto error;
*prev = memcpy(ai, ai0, sizeof *ai); prev = &ai->ai_next; *prev = NULL;
ai->ai_addr = memcpy(ai + 1, ai0->ai_addr, ai0->ai_addrlen);
ai->ai_canonname = h0->ai_canonname;
}
}
}
for (i = 0; i < N; i++)
su_freeaddrinfo(all[i]);
*res = tbf;
return 0;
error:
for (i = 0; i < N; i++)
su_freeaddrinfo(all[i]);
tport_freeaddrinfo(tbf);
return EAI_MEMORY;
}
su_inline
su_addrinfo_t *get_next_addrinfo(su_addrinfo_t **all)
{
su_addrinfo_t *ai;
while ((ai = *all)) {
if (ai->ai_family == AF_INET)
return ai;
#if SU_HAVE_IN6
if (ai->ai_family == AF_INET6)
return ai;
#endif
*all = ai->ai_next;
}
return ai;
}
static
void tport_freeaddrinfo(su_addrinfo_t *ai)
{
su_addrinfo_t *ai_next;
while (ai) {
ai_next = ai->ai_next;
free(ai);
ai = ai_next;
}
}
static
int tport_addrinfo_copy(su_addrinfo_t *dst, void *addr, socklen_t addrlen,
su_addrinfo_t const *src)
{
if (addrlen < src->ai_addrlen)
return -1;
memcpy(dst, src, sizeof *dst);
if (src->ai_addrlen < addrlen)
memset(addr, 0, addrlen);
dst->ai_addr = memcpy(addr, src->ai_addr, src->ai_addrlen);
dst->ai_next = NULL;
return 0;
}
/** Close a transport.
*
* Close the socket associated with a transport object. Report an error to
* all pending clients, if required. Set/reset timer, too.
*/
void tport_close(tport_t *self)
{
SU_DEBUG_5(("%s(%p): " TPN_FORMAT "\n",
__func__, (void *)self, TPN_ARGS(self->tp_name)));
if (self->tp_closed || !tport_is_secondary(self))
return;
tprb_remove(&self->tp_pri->pri_open, self);
tplist_insert(&self->tp_pri->pri_closed, self);
self->tp_closed = 1;
self->tp_send_close = 3;
self->tp_recv_close = 3;
if (self->tp_params->tpp_sdwn_error && self->tp_pused)
tport_error_report(self, -1, NULL);
if (self->tp_pri->pri_vtable->vtp_shutdown)
self->tp_pri->pri_vtable->vtp_shutdown(self, 2);
else if (self->tp_socket != -1)
shutdown(self->tp_socket, 2);
if (self->tp_index)
su_root_deregister(self->tp_master->mr_root, self->tp_index);
self->tp_index = 0;
#if SU_HAVE_BSDSOCK
if (self->tp_socket != -1)
su_close(self->tp_socket);
self->tp_socket = -1;
#endif
/* Zap the queued messages */
if (self->tp_queue) {
unsigned short i, N = self->tp_params->tpp_qsize;
for (i = 0; i < N; i++) {
if (self->tp_queue[i])
msg_ref_destroy(self->tp_queue[i]), self->tp_queue[i] = NULL;
}
}
self->tp_index = 0;
self->tp_events = 0;
}
/** Shutdown a transport.
*
* The tport_shutdown() shuts down a full-duplex transport connection
* partially or completely. If @a how is 0, the further incoming data is
* shut down. If @a how is 1, further outgoing data is shut down. If @a how
* is 2, both incoming and outgoing traffic is shut down.
*
*/
int tport_shutdown(tport_t *self, int how)
{
int retval;
if (!tport_is_secondary(self))
return -1;
retval = tport_shutdown0(self, how);
tport_set_secondary_timer(self);
return retval;
}
/** Internal shutdown function */
int tport_shutdown0(tport_t *self, int how)
{
SU_DEBUG_7(("%s(%p, %d)\n", __func__, (void *)self, how));
if (!tport_is_tcp(self) ||
how < 0 || how >= 2 ||
(how == 0 && self->tp_send_close) ||
(how == 1 && self->tp_recv_close > 1)) {
tport_close(self);
return 1;
}
if (self->tp_pri->pri_vtable->vtp_shutdown)
self->tp_pri->pri_vtable->vtp_shutdown(self, how);
else
shutdown(self->tp_socket, how);
if (how == 0) {
self->tp_recv_close = 2;
tport_set_events(self, 0, SU_WAIT_IN);
if (self->tp_params->tpp_sdwn_error && self->tp_pused)
tport_error_report(self, -1, NULL);
}
else if (how == 1) {
self->tp_send_close = 2;
tport_set_events(self, 0, SU_WAIT_OUT);
if (tport_has_queued(self)) {
unsigned short i, N = self->tp_params->tpp_qsize;
for (i = 0; i < N; i++) {
if (self->tp_queue[i]) {
tport_pending_errmsg(self, self->tp_queue[i], EPIPE);
msg_ref_destroy(self->tp_queue[i]), self->tp_queue[i] = NULL;
}
}
}
}
return 0;
}
static void tport_secondary_timer(su_root_magic_t *magic,
su_timer_t *t,
tport_t *self)
{
su_time_t now;
if (tport_is_closed(self)) {
if (self->tp_refs == 0)
tport_zap_secondary(self);
return;
}
now = /* su_timer_expired(t); */ su_now();
if (self->tp_pri->pri_vtable->vtp_secondary_timer)
self->tp_pri->pri_vtable->vtp_secondary_timer(self, now);
else
tport_base_timer(self, now);
}
/** Base timer for secondary transports.
*
* Closes and zaps unused transports. Sets the timer again.
*/
void tport_base_timer(tport_t *self, su_time_t now)
{
unsigned timeout = self->tp_params->tpp_idle;
if (timeout != UINT_MAX) {
if (self->tp_refs == 0 &&
self->tp_msg == NULL &&
!tport_has_queued(self) &&
su_time_cmp(su_time_add(self->tp_rtime, timeout), now) < 0 &&
su_time_cmp(su_time_add(self->tp_stime, timeout), now) < 0) {
SU_DEBUG_7(("%s(%p): unused for %d ms,%s zapping\n",
__func__, (void *)self,
timeout, tport_is_closed(self) ? "" : " closing and"));
if (!tport_is_closed(self))
tport_close(self);
tport_zap_secondary(self);
return;
}
}
tport_set_secondary_timer(self);
}
/** Set timer for a secondary transport.
*
* This function should be called after any network activity:
* tport_base_connect(), tport_send_msg(), tport_send_queue(),
* tport_recv_data(), tport_shutdown0(), tport_close(),
*
* @retval 0 always
*/
int tport_set_secondary_timer(tport_t *self)
{
su_time_t const infinity = { ULONG_MAX, 999999 };
su_time_t target = infinity;
char const *why = "not specified";
su_timer_f timer = tport_secondary_timer;
if (!tport_is_secondary(self))
return 0;
if (tport_is_closed(self)) {
if (self->tp_refs == 0) {
SU_DEBUG_7(("tport(%p): set timer at %u ms because %s\n",
self, 0, "zap"));
su_timer_set_interval(self->tp_timer, timer, self, 0);
}
else
su_timer_reset(self->tp_timer);
return 0;
}
if (self->tp_params->tpp_idle != UINT_MAX) {
if (self->tp_refs == 0 &&
self->tp_msg == NULL && !tport_has_queued(self)) {
if (su_time_cmp(self->tp_stime, self->tp_rtime) < 0) {
target = su_time_add(self->tp_rtime, self->tp_params->tpp_idle);
why = "idle since recv";
}
else {
target = su_time_add(self->tp_stime, self->tp_params->tpp_idle);
why = "idle since send";
}
}
}
if (self->tp_pri->pri_vtable->vtp_next_secondary_timer)
self->tp_pri->pri_vtable->
vtp_next_secondary_timer(self, &target, &why);
if (su_time_cmp(target, infinity)) {
SU_DEBUG_7(("tport(%p): set timer at %ld ms because %s\n",
(void *)self, su_duration(target, su_now()), why));
su_timer_set_at(self->tp_timer, timer, self, target);
}
else {
SU_DEBUG_9(("tport(%p): reset timer\n", (void *)self));
su_timer_reset(self->tp_timer);
}
return 0;
}
/** Flush idle connections. */
int tport_flush(tport_t *tp)
{
tport_t *tp_next;
tport_primary_t *pri;
if (tp == NULL)
return -1;
pri = tp->tp_pri;
while (pri->pri_closed)
tport_zap_secondary(pri->pri_closed);
/* Go through all secondary transports, zap idle ones */
for (tp = tprb_first(tp->tp_pri->pri_open); tp; tp = tp_next) {
tp_next = tprb_succ(tp);
if (tp->tp_refs != 0)
continue;
SU_DEBUG_1(("tport_flush(%p): %szapping\n",
(void *)tp, tport_is_closed(tp) ? "" : "closing and "));
tport_close(tp);
tport_zap_secondary(tp);
}
return 0;
}
/**Convert sockaddr_t to a transport name.
*
* @retval 0 when successful
* @retval -1 upon an error
*/
int tport_convert_addr(su_home_t *home,
tp_name_t *tpn,
char const *protoname,
char const *canon,
su_sockaddr_t const *su)
{
tp_name_t name[1] = {{ NULL }};
char const *host;
char buf[TPORT_HOSTPORTSIZE];
char port[8];
size_t canonlen = canon ? strlen(canon) : 0;
if (su == NULL)
host = "*";
else if (!SU_SOCKADDR_INADDR_ANY(su))
host = tport_hostport(buf, sizeof(buf), su, 0);
else if (canonlen && su->su_family == AF_INET &&
strspn(canon, "0123456789.") == canonlen)
host = canon;
#if SU_HAVE_IN6
else if (canonlen && su->su_family == AF_INET6 &&
strspn(canon, "0123456789abcdefABCDEF:.") == canonlen)
host = canon;
#endif
else
host = localipname(su->su_family, buf, sizeof(buf));
if (host == NULL)
return -1;
if (su == NULL)
strcpy(port, "*");
else
snprintf(port, sizeof(port), "%u", ntohs(su->su_port));
name->tpn_proto = protoname;
name->tpn_host = host;
name->tpn_canon = canon ? canon : host;
name->tpn_port = port;
return tport_name_dup(home, tpn, name);
}
/** Set transport object name. @internal
*/
static
int tport_setname(tport_t *self,
char const *protoname,
su_addrinfo_t const *ai,
char const *canon)
{
su_addrinfo_t *selfai = self->tp_addrinfo;
if (tport_convert_addr(self->tp_home, self->tp_name,
protoname, canon,
(su_sockaddr_t *)ai->ai_addr) < 0)
return -1;
if (tport_is_secondary(self))
self->tp_ident = self->tp_pri->pri_primary->tp_ident;
selfai->ai_flags = ai->ai_flags & TP_AI_MASK;
selfai->ai_family = ai->ai_family;
selfai->ai_socktype = ai->ai_socktype;
selfai->ai_protocol = ai->ai_protocol;
selfai->ai_canonname = (char *)self->tp_name->tpn_canon;
if (ai->ai_addr) {
assert(ai->ai_family), assert(ai->ai_socktype), assert(ai->ai_protocol);
memcpy(self->tp_addr, ai->ai_addr, selfai->ai_addrlen = ai->ai_addrlen);
}
return 0;
}
/**Resolve protocol name.
*
* Convert a protocol name to IP protocol number and socket type used by
* su_getaddrinfo().
*
* @param hints hints with the protocol number and socktype [OUT]
* @param proto protocol name [IN]
* @param flags hint flags
*/
static
int getprotohints(su_addrinfo_t *hints,
char const *proto,
int flags)
{
memset(hints, 0, sizeof *hints);
hints->ai_flags = flags;
hints->ai_canonname = (char *)proto;
#if HAVE_TLS
if (strcasecmp(proto, "tls") == 0)
proto = "tcp";
#endif
#if HAVE_SCTP
if (strcasecmp(proto, "sctp") == 0) {
hints->ai_protocol = IPPROTO_SCTP;
hints->ai_socktype = SOCK_STREAM;
return 0;
}
#endif
if (strcasecmp(proto, "udp") == 0) {
hints->ai_protocol = IPPROTO_UDP;
hints->ai_socktype = SOCK_DGRAM;
return 0;
}
if (strcasecmp(proto, "tcp") == 0) {
hints->ai_protocol = IPPROTO_TCP;
hints->ai_socktype = SOCK_STREAM;
return 0;
}
return -1;
}
/** Get local IP.
*
* Get primary local IP address in URI format (IPv6 address will be
* []-quoted).
*/
static
char *localipname(int pf, char *buf, size_t bufsiz)
{
su_localinfo_t *li = NULL, hints[1] = {{ LI_NUMERIC | LI_CANONNAME }};
size_t n;
int error;
hints->li_family = pf;
#if SU_HAVE_IN6
if (pf == AF_INET6) {
/* Link-local addresses are not usable on IPv6 */
hints->li_scope = LI_SCOPE_GLOBAL | LI_SCOPE_SITE /* | LI_SCOPE_HOST */;
}
#endif
if ((error = su_getlocalinfo(hints, &li))) {
#if SU_HAVE_IN6
if (error == ELI_NOADDRESS && pf == AF_INET6) {
hints->li_family = AF_INET;
error = su_getlocalinfo(hints, &li);
if (error == ELI_NOADDRESS) {
hints->li_family = AF_INET6; hints->li_scope |= LI_SCOPE_HOST;
error = su_getlocalinfo(hints, &li);
}
if (error == ELI_NOADDRESS) {
hints->li_family = AF_INET;
error = su_getlocalinfo(hints, &li);
}
}
#endif
if (error) {
SU_DEBUG_1(("tport: su_getlocalinfo: %s\n", su_gli_strerror(error)));
return NULL;
}
}
assert(li); assert(li->li_canonname);
n = strlen(li->li_canonname);
if (li->li_family == AF_INET) {
if (n >= bufsiz)
return NULL;
memcpy(buf, li->li_canonname, n + 1);
}
else {
if (n + 2 >= bufsiz)
return NULL;
memcpy(buf + 1, li->li_canonname, n);
buf[0] = '['; buf[++n] = ']'; buf[++n] = '\0';
}
su_freelocalinfo(li);
return buf;
}
/** Process errors from transport. */
void tport_error_report(tport_t *self, int errcode,
su_sockaddr_t const *addr)
{
char const *errmsg;
if (errcode == 0)
return;
else if (errcode > 0)
errmsg = su_strerror(errcode);
else
/* Should be something like ENOTCONN */
errcode = 0, errmsg = "stream closed";
if (addr && addr->su_family == AF_UNSPEC)
addr = NULL;
/* Mark this connection as unusable */
if (errcode > 0 && tport_has_connection(self))
self->tp_reusable = 0;
/* Report error */
if (addr && tport_pending_error(self, addr, errcode))
;
else if (tport_is_secondary(self) &&
tport_pending_error(self, NULL, errcode) > 0)
;
else if (self->tp_master->mr_tpac->tpac_error) {
char *dstname = NULL;
char hp[TPORT_HOSTPORTSIZE];
if (addr)
dstname = tport_hostport(hp, sizeof hp, addr, 1);
STACK_ERROR(self, errcode, dstname);
}
else {
if (tport_is_primary(self))
SU_DEBUG_3(("%s(%p): %s (with %s)\n", __func__, (void *)self,
errmsg, self->tp_protoname));
else
SU_DEBUG_3(("%s(%p): %s (with %s/%s:%s)\n", __func__, (void *)self,
errmsg, self->tp_protoname, self->tp_host, self->tp_port));
}
/* Close connection */
if (!self->tp_closed && errcode > 0 && tport_has_connection(self))
tport_close(self);
}
/** Accept a new connection.
*
* The function tport_accept() accepts a new connection and creates a
* secondary transport object for the new socket.
*/
int tport_accept(tport_primary_t *pri, int events)
{
tport_t *self;
su_addrinfo_t ai[1];
su_sockaddr_t su[1];
socklen_t sulen = sizeof su;
su_socket_t s = INVALID_SOCKET, l = pri->pri_primary->tp_socket;
char const *reason = "accept";
if (events & SU_WAIT_ERR)
tport_error_event(pri->pri_primary);
if (!(events & SU_WAIT_ACCEPT))
return 0;
memcpy(ai, pri->pri_primary->tp_addrinfo, sizeof ai);
ai->ai_canonname = NULL;
s = accept(l, &su->su_sa, &sulen);
if (s < 0) {
tport_error_report(pri->pri_primary, su_errno(), NULL);
return 0;
}
ai->ai_addr = &su->su_sa, ai->ai_addrlen = sulen;
/* Alloc a new transport object, then register socket events with it */
self = tport_alloc_secondary(pri, s, 1, &reason);
if (self) {
int i;
su_root_t *root = self->tp_master->mr_root;
su_wakeup_f wakeup = tport_wakeup;
int events = SU_WAIT_IN|SU_WAIT_ERR|SU_WAIT_HUP;
su_wait_t wait[1] = { SU_WAIT_INIT };
SU_CANONIZE_SOCKADDR(su);
if (/* Create wait object with appropriate events. */
su_wait_create(wait, s, events) != -1
/* Register socket to root */
&&
(i = su_root_register(root, wait, wakeup, self, 0)) != -1) {
self->tp_index = i;
self->tp_conn_orient = 1;
self->tp_is_connected = 1;
self->tp_events = events;
if (tport_setname(self, pri->pri_protoname, ai, NULL) != -1) {
SU_DEBUG_5(("%s(%p): new connection from " TPN_FORMAT "\n",
__func__, (void *)self, TPN_ARGS(self->tp_name)));
tprb_append(&pri->pri_open, self);
/* Return succesfully */
return 0;
}
}
else
su_wait_destroy(wait);
/* Failure: shutdown socket, */
tport_close(self);
tport_zap_secondary(self);
}
/* XXX - report error ? */
return 0;
}
/** Allocate a new message object */
msg_t *tport_msg_alloc(tport_t const *self, usize_t size)
{
if (self) {
tport_master_t *mr = self->tp_master;
msg_t *msg = mr->mr_tpac->tpac_alloc(mr->mr_stack, mr->mr_log,
NULL, size, self, NULL);
if (msg) {
su_addrinfo_t *mai = msg_addrinfo(msg);
su_addrinfo_t const *tai = self->tp_addrinfo;
mai->ai_family = tai->ai_family;
mai->ai_protocol = tai->ai_protocol;
mai->ai_socktype = tai->ai_socktype;
}
return msg;
}
else {
return NULL;
}
}
/** Process events for socket waiting to be connected
*/
static int tport_connected(su_root_magic_t *magic, su_wait_t *w, tport_t *self)
{
int events = su_wait_events(w, self->tp_socket);
tport_master_t *mr = self->tp_master;
su_wait_t wait[1] = { SU_WAIT_INIT };
int error;
SU_DEBUG_7(("tport_connected(%p): events%s%s\n", (void *)self,
events & SU_WAIT_CONNECT ? " CONNECTED" : "",
events & SU_WAIT_ERR ? " ERR" : ""));
#if HAVE_POLL
assert(w->fd == self->tp_socket);
#endif
if (events & SU_WAIT_ERR)
tport_error_event(self);
if (!(events & SU_WAIT_CONNECT) || self->tp_closed) {
return 0;
}
error = su_soerror(self->tp_socket);
if (error) {
tport_error_report(self, error, NULL);
return 0;
}
self->tp_is_connected = 1;
su_root_deregister(mr->mr_root, self->tp_index);
self->tp_index = -1;
self->tp_events = SU_WAIT_IN | SU_WAIT_ERR | SU_WAIT_HUP;
if (su_wait_create(wait, self->tp_socket, self->tp_events) == -1 ||
(self->tp_index = su_root_register(mr->mr_root,
wait, tport_wakeup, self, 0))
== -1) {
tport_close(self);
tport_set_secondary_timer(self);
return 0;
}
if (tport_has_queued(self))
tport_send_event(self);
else
tport_set_secondary_timer(self);
return 0;
}
/** Process events for primary socket */
static int tport_wakeup_pri(su_root_magic_t *m, su_wait_t *w, tport_t *self)
{
tport_primary_t *pri = self->tp_pri;
int events = su_wait_events(w, self->tp_socket);
#if HAVE_POLL
assert(w->fd == self->tp_socket);
#endif
SU_DEBUG_7(("%s(%p): events%s%s%s%s%s%s\n",
"tport_wakeup_pri", (void *)self,
events & SU_WAIT_IN ? " IN" : "",
SU_WAIT_ACCEPT != SU_WAIT_IN &&
(events & SU_WAIT_ACCEPT) ? " ACCEPT" : "",
events & SU_WAIT_OUT ? " OUT" : "",
events & SU_WAIT_HUP ? " HUP" : "",
events & SU_WAIT_ERR ? " ERR" : "",
self->tp_closed ? " (closed)" : ""));
if (pri->pri_vtable->vtp_wakeup_pri)
return pri->pri_vtable->vtp_wakeup_pri(pri, events);
else
return tport_base_wakeup(self, events);
}
/** Process events for connected socket */
static int tport_wakeup(su_root_magic_t *magic, su_wait_t *w, tport_t *self)
{
int events = su_wait_events(w, self->tp_socket);
#if HAVE_POLL
assert(w->fd == self->tp_socket);
#endif
SU_DEBUG_7(("%s(%p): events%s%s%s%s%s\n",
"tport_wakeup", (void *)self,
events & SU_WAIT_IN ? " IN" : "",
events & SU_WAIT_OUT ? " OUT" : "",
events & SU_WAIT_HUP ? " HUP" : "",
events & SU_WAIT_ERR ? " ERR" : "",
self->tp_closed ? " (closed)" : ""));
if (self->tp_pri->pri_vtable->vtp_wakeup)
return self->tp_pri->pri_vtable->vtp_wakeup(self, events);
else
return tport_base_wakeup(self, events);
}
static int tport_base_wakeup(tport_t *self, int events)
{
int error = 0;
if (events & SU_WAIT_ERR)
error = tport_error_event(self);
if ((events & SU_WAIT_OUT) && !self->tp_closed)
tport_send_event(self);
if ((events & SU_WAIT_IN) && !self->tp_closed)
tport_recv_event(self);
if ((events & SU_WAIT_HUP) && !self->tp_closed)
tport_hup_event(self);
if (error) {
if (self->tp_closed && error == EPIPE)
return 0;
tport_error_report(self, error, NULL);
}
return 0;
}
/** Stop reading from socket until tport_continue() is called. */
int tport_stall(tport_t *self)
{
return tport_set_events(self, 0, SU_WAIT_IN);
}
/** Continue reading from socket. */
int tport_continue(tport_t *self)
{
if (self == NULL || self->tp_recv_close)
return -1;
return tport_set_events(self, SU_WAIT_IN, 0);
}
/** Process "hangup" event.
*
*/
void tport_hup_event(tport_t *self)
{
SU_DEBUG_7(("%s(%p)\n", __func__, (void *)self));
if (self->tp_msg) {
su_time_t now = su_now();
msg_recv_commit(self->tp_msg, 0, 1);
tport_parse(self, 1, now);
}
if (!tport_is_secondary(self))
return;
/* End of stream */
tport_shutdown0(self, 0);
tport_set_secondary_timer(self);
}
/** Receive data available on the socket.
*
* @retval -1 error
* @retval 0 end-of-stream
* @retval 1 normal receive
* @retval 2 incomplete recv, recv again
* @retval 3 STUN keepalive, ignore
*/
su_inline
int tport_recv_data(tport_t *self)
{
return self->tp_pri->pri_vtable->vtp_recv(self);
}
/** Process "ready to receive" event.
*
*/
void tport_recv_event(tport_t *self)
{
int again;
SU_DEBUG_7(("%s(%p)\n", "tport_recv_event", (void *)self));
do {
/* Receive data from socket */
again = tport_recv_data(self);
su_time(&self->tp_rtime);
#if HAVE_SOFIA_STUN
if (again == 3) /* STUN keepalive */
return;
#endif
if (again < 0) {
int error = su_errno();
if (!su_is_blocking(error)) {
tport_error_report(self, error, NULL);
return;
}
else {
SU_DEBUG_3(("%s: recvfrom(): %s (%d)\n", __func__,
su_strerror(EAGAIN), EAGAIN));
}
}
if (again >= 0)
tport_parse(self, !again, self->tp_rtime);
}
while (again > 1);
if (!tport_is_secondary(self))
return;
if (again == 0 && !tport_is_dgram(self)) {
/* End of stream */
if (!self->tp_closed) {
/* Don't shutdown completely if there are queued messages */
tport_shutdown0(self, tport_has_queued(self) ? 0 : 2);
}
}
tport_set_secondary_timer(self);
}
/*
* Parse the data and feed complete messages to the stack
*/
static void tport_parse(tport_t *self, int complete, su_time_t now)
{
msg_t *msg, *next = NULL;
int n, streaming, stall = 0;
for (msg = self->tp_msg; msg; msg = next) {
n = msg_extract(msg); /* Parse message */
streaming = 0;
if (n == 0) {
if (complete)
msg_mark_as_complete(msg, MSG_FLG_ERROR), n = -1;
else if (!(streaming = msg_is_streaming(msg))) {
tport_sigcomp_accept_incomplete(self, msg);
break;
}
}
if (msg_get_flags(msg, MSG_FLG_TOOLARGE))
SU_DEBUG_3(("%s(%p): too large message from " TPN_FORMAT "\n",
__func__, (void *)self, TPN_ARGS(self->tp_name)));
/* Do not try to read anymore from this connection? */
if (tport_is_stream(self) &&
msg_get_flags(msg, MSG_FLG_TOOLARGE | MSG_FLG_ERROR))
self->tp_recv_close = stall = 1;
if (n == -1)
next = NULL;
else if (streaming)
msg_ref_create(msg); /* Keep a reference */
else if (tport_is_stream(self))
next = msg_next(msg);
else
next = NULL;
tport_deliver(self, msg, next, self->tp_comp, now);
if (streaming && next == NULL)
break;
}
if (stall)
tport_stall(self);
if (self->tp_rlogged != msg)
self->tp_rlogged = NULL;
self->tp_msg = msg;
}
/** Deliver message to the protocol stack */
void tport_deliver(tport_t *self,
msg_t *msg,
msg_t *next,
tport_compressor_t *sc,
su_time_t now)
{
tport_t *ref;
int error;
struct tport_delivery *d;
assert(msg);
d = self->tp_master->mr_delivery;
d->d_tport = self;
d->d_msg = msg;
*d->d_from = *self->tp_name;
if (tport_is_primary(self)) {
char ipaddr[SU_ADDRSIZE + 2];
su_sockaddr_t const *su = msg_addr(msg);
#if SU_HAVE_IN6
if (su->su_family == AF_INET6) {
ipaddr[0] = '[';
su_inet_ntop(su->su_family, SU_ADDR(su), ipaddr + 1, sizeof(ipaddr) - 1);
strcat(ipaddr, "]");
}
else {
su_inet_ntop(su->su_family, SU_ADDR(su), ipaddr, sizeof(ipaddr));
}
#else
su_inet_ntop(su->su_family, SU_ADDR(su), ipaddr, sizeof(ipaddr));
#endif
d->d_from->tpn_canon = ipaddr;
d->d_from->tpn_host = ipaddr;
}
d->d_comp = sc;
if (!sc)
d->d_from->tpn_comp = NULL;
error = msg_has_error(msg);
if (error && !*msg_chain_head(msg)) {
/* This is badly damaged packet */
}
else if (self->tp_master->mr_log && msg != self->tp_rlogged) {
char const *via = "recv";
tport_log_msg(self, msg, via, "from", now);
self->tp_rlogged = msg;
}
SU_DEBUG_7(("%s(%p): %smsg %p ("MOD_ZU" bytes)"
" from " TPN_FORMAT " next=%p\n",
__func__, (void *)self, error ? "bad " : "",
(void *)msg, (size_t)msg_size(msg),
TPN_ARGS(d->d_from), (void *)next));
ref = tport_incref(self);
if (self->tp_pri->pri_vtable->vtp_deliver) {
self->tp_pri->pri_vtable->vtp_deliver(self, msg, now);
}
else
tport_base_deliver(self, msg, now);
tport_decref(&ref);
d->d_msg = NULL;
}
/** Pass message to the protocol stack */
void
tport_base_deliver(tport_t *self, msg_t *msg, su_time_t now)
{
STACK_RECV(self, msg, now);
}
/** Return source transport object for delivered message */
tport_t *tport_delivered_by(tport_t const *tp, msg_t const *msg)
{
if (tp && msg && msg == tp->tp_master->mr_delivery->d_msg)
return tp->tp_master->mr_delivery->d_tport;
else
return NULL;
}
/** Return source transport name for delivered message */
int tport_delivered_from(tport_t *tp, msg_t const *msg, tp_name_t name[1])
{
if (name == NULL)
return -1;
if (tp == NULL || msg == NULL || msg != tp->tp_master->mr_delivery->d_msg) {
memset(name, 0, sizeof *name);
return -1;
}
else {
*name = *tp->tp_master->mr_delivery->d_from;
return 0;
}
}
/** Return UDVM used to decompress the message. */
int
tport_delivered_with_comp(tport_t *tp, msg_t const *msg,
tport_compressor_t **return_compressor)
{
if (tp == NULL || msg == NULL || msg != tp->tp_master->mr_delivery->d_msg)
return -1;
if (return_compressor)
*return_compressor = tp->tp_master->mr_delivery->d_comp;
return 0;
}
/** Allocate message for N bytes,
* return message buffer as a iovec
*/
ssize_t tport_recv_iovec(tport_t const *self,
msg_t **in_out_msg,
msg_iovec_t iovec[msg_n_fragments],
size_t N,
int exact)
{
msg_t *msg = *in_out_msg;
ssize_t i, veclen;
int fresh;
if (N == 0)
return 0;
fresh = !msg;
/*
* Allocate a new message if needed
*/
if (!msg) {
if (!(*in_out_msg = msg = tport_msg_alloc(self, N))) {
SU_DEBUG_7(("%s(%p): cannot allocate msg for "MOD_ZU" bytes "
"from (%s/%s:%s)\n",
__func__, (void *)self, N,
self->tp_protoname, self->tp_host, self->tp_port));
return -1;
}
}
/*
* Get enough buffer space for the incoming data
*/
veclen = msg_recv_iovec(msg, iovec, msg_n_fragments, N, exact);
if (veclen < 0) {
int err = su_errno();
if (fresh && err == ENOBUFS && msg_get_flags(msg, MSG_FLG_TOOLARGE))
veclen = msg_recv_iovec(msg, iovec, msg_n_fragments, 4096, 1);
}
if (veclen < 0) {
int err = su_errno();
SU_DEBUG_7(("%s(%p): cannot get msg %p buffer for "MOD_ZU" bytes "
"from (%s/%s:%s): %s\n",
__func__, (void *)self, (void *)msg, N,
self->tp_protoname, self->tp_host, self->tp_port,
su_strerror(err)));
su_seterrno(err);
return veclen;
}
assert(veclen <= msg_n_fragments);
SU_DEBUG_7(("%s(%p) msg %p from (%s/%s:%s) has "MOD_ZU" bytes, "
"veclen = "MOD_ZD"\n",
__func__, (void *)self,
(void *)msg, self->tp_protoname, self->tp_host, self->tp_port,
N, veclen));
for (i = 0; veclen > 1 && i < veclen; i++) {
SU_DEBUG_7(("\tiovec[%lu] = %lu bytes\n", (LU)i, (LU)iovec[i].mv_len));
}
return veclen;
}
int tport_recv_error_report(tport_t *self)
{
if (su_is_blocking(su_errno()))
return 1;
/* Report error */
tport_error_report(self, su_errno(), NULL);
return -1;
}
/** Send a message.
*
* The function tport_tsend() sends a message using the transport @a self.
*
* @TAGS
* TPTAG_MTU(), TPTAG_REUSE(), TPTAG_CLOSE_AFTER(), TPTAG_SDWN_AFTER(),
* TPTAG_FRESH(), TPTAG_COMPARTMENT().
*/
tport_t *tport_tsend(tport_t *self,
msg_t *msg,
tp_name_t const *_tpn,
tag_type_t tag, tag_value_t value, ...)
{
ta_list ta;
tagi_t const *t;
int reuse, sdwn_after, close_after, resolved = 0, fresh;
unsigned mtu;
su_addrinfo_t *ai;
tport_primary_t *primary;
tp_name_t tpn[1];
struct sigcomp_compartment *cc;
assert(self);
if (!self || !msg || !_tpn) {
msg_set_errno(msg, EINVAL);
return NULL;
}
*tpn = *_tpn;
SU_DEBUG_7(("tport_tsend(%p) tpn = " TPN_FORMAT "\n",
(void *)self, TPN_ARGS(tpn)));
if (tport_is_master(self)) {
primary = (tport_primary_t *)tport_primary_by_name(self, tpn);
if (!primary) {
msg_set_errno(msg, EPROTONOSUPPORT);
return NULL;
}
}
else {
primary = self->tp_pri;
}
ta_start(ta, tag, value);
reuse = primary->pri_primary->tp_reusable && self->tp_reusable;
fresh = 0;
sdwn_after = 0;
close_after = 0;
mtu = 0;
cc = NULL;
/* tl_gets() is a bit too slow here... */
for (t = ta_args(ta); t; t = tl_next(t)) {
tag_type_t tt = t->t_tag;
if (tptag_reuse == tt)
reuse = t->t_value != 0;
else if (tptag_mtu == tt)
mtu = t->t_value;
else if (tptag_sdwn_after == tt)
sdwn_after = t->t_value != 0;
else if (tptag_close_after == tt)
close_after = t->t_value != 0;
else if (tptag_fresh == tt)
fresh = t->t_value != 0;
else if (tptag_compartment == tt)
cc = (struct sigcomp_compartment *)t->t_value;
}
ta_end(ta);
fresh = fresh || !reuse;
ai = msg_addrinfo(msg);
ai->ai_flags = 0;
tpn->tpn_comp = tport_canonize_comp(tpn->tpn_comp);
if (tpn->tpn_comp) {
ai->ai_flags |= TP_AI_COMPRESSED;
SU_DEBUG_9(("%s: compressed msg(%p) with %s\n",
__func__, (void *)msg, tpn->tpn_comp));
}
if (!tpn->tpn_comp || cc == NONE)
cc = NULL;
if (sdwn_after)
ai->ai_flags |= TP_AI_SHUTDOWN;
if (close_after)
ai->ai_flags |= TP_AI_CLOSE;
if (fresh) {
/* Select a primary protocol, make a fresh connection */
self = primary->pri_primary;
}
else if (tport_is_secondary(self) && tport_is_clear_to_send(self)) {
self = self;
}
/*
* Try to find an already open connection to the destination,
* or get a primary protocol
*/
else {
/* If primary, resolve the destination address, store it in the msg */
if (tport_resolve(primary->pri_primary, msg, tpn) < 0) {
return NULL;
}
resolved = 1;
self = tport_by_addrinfo(primary, msg_addrinfo(msg), tpn);
if (!self)
self = primary->pri_primary;
}
if (tport_is_primary(self)) {
/* If primary, resolve the destination address, store it in the msg */
if (!resolved && tport_resolve(self, msg, tpn) < 0) {
return NULL;
}
if (tport_is_connection_oriented(self)
|| self->tp_params->tpp_conn_orient) {
#if 0 && HAVE_UPNP /* We do not want to use UPnP with secondary transports! */
if (upnp_register_upnp_client(1) != 0) {
upnp_check_for_nat();
}
#endif
tpn->tpn_proto = self->tp_protoname;
if (!cc)
tpn->tpn_comp = NULL;
/* Create a secondary transport which is connected to the destination */
self = tport_connect(primary, msg_addrinfo(msg), tpn);
#if 0 && HAVE_UPNP /* We do not want to use UPnP with secondary transports! */
upnp_deregister_upnp_client(0, 0);
#endif
if (!self) {
msg_set_errno(msg, su_errno());
SU_DEBUG_9(("tport_socket failed in tsend\n"));
return NULL;
}
if (cc)
tport_sigcomp_assign(self, cc);
}
}
else if (tport_is_secondary(self)) {
cc = tport_sigcomp_assign_if_needed(self, cc);
}
if (cc == NULL)
tpn->tpn_comp = NULL;
if (tport_is_secondary(self)) {
/* Set the peer address to msg */
tport_peer_address(self, msg);
if (sdwn_after || close_after)
self->tp_reusable = 0;
}
if (self->tp_pri->pri_vtable->vtp_prepare
? self->tp_pri->pri_vtable->vtp_prepare(self, msg, tpn, cc, mtu) < 0
: tport_prepare_and_send(self, msg, tpn, cc, mtu) < 0)
return NULL;
else
return self;
}
int tport_prepare_and_send(tport_t *self, msg_t *msg,
tp_name_t const *tpn,
struct sigcomp_compartment *cc,
unsigned mtu)
{
int retval;
/* Prepare message for sending - i.e., encode it */
if (msg_prepare(msg) < 0) {
msg_set_errno(msg, errno);
return -1;
}
if (msg_size(msg) > (usize_t)(mtu ? mtu : tport_mtu(self))) {
msg_set_errno(msg, EMSGSIZE);
return -1;
}
/*
* If there is already an queued message,
* put this message straight in the queue
*/
if ((self->tp_queue && self->tp_queue[self->tp_qhead]) ||
/* ...or we are connecting */
(self->tp_events & (SU_WAIT_CONNECT | SU_WAIT_OUT))) {
if (tport_queue(self, msg) < 0) {
SU_DEBUG_9(("tport_queue failed in tsend\n"));
return -1;
}
return 0;
}
retval = tport_send_msg(self, msg, tpn, cc);
tport_set_secondary_timer(self);
return retval;
}
/** Send a message.
*
* @retval 0 when succesful
* @retval -1 upon an error
*/
int tport_send_msg(tport_t *self, msg_t *msg,
tp_name_t const *tpn,
struct sigcomp_compartment *cc)
{
msg_iovec_t *iov, auto_iov[40];
size_t iovlen, iovused, i, total;
size_t n;
ssize_t nerror;
int sdwn_after, close_after;
su_time_t now;
su_addrinfo_t *ai;
assert(self->tp_queue == NULL ||
self->tp_queue[self->tp_qhead] == NULL ||
self->tp_queue[self->tp_qhead] == msg);
if (self->tp_iov)
/* Use the heap-allocated I/O vector */
iov = self->tp_iov, iovlen = self->tp_iovlen;
else
/* Use the stack I/O vector */
iov = auto_iov, iovlen = sizeof(auto_iov)/sizeof(auto_iov[0]);
/* Get a iovec for message contents */
for (;;) {
iovused = msg_iovec(msg, iov, iovlen);
if (iovused <= iovlen)
break;
iov = su_realloc(self->tp_home, self->tp_iov, sizeof(*iov) * iovused);
if (iov == NULL) {
msg_set_errno(msg, errno);
return -1;
}
self->tp_iov = iov, self->tp_iovlen = iovlen = iovused;
}
assert(iovused > 0);
self->tp_stime = self->tp_ktime = now = su_now();
nerror = tport_vsend(self, msg, tpn, iov, iovused, cc);
SU_DEBUG_9(("tport_vsend returned "MOD_ZD"\n", nerror));
if (nerror == -1)
return -1;
n = (size_t)nerror;
self->tp_unsent = NULL, self->tp_unsentlen = 0;
if (n > 0 && self->tp_master->mr_log && self->tp_slogged != msg) {
tport_log_msg(self, msg, "send", "to", now);
self->tp_slogged = msg;
}
for (i = 0, total = 0; i < iovused; i++) {
if (total + (size_t)iov[i].mv_len > n) {
if (tport_is_connection_oriented(self)) {
iov[i].mv_len -= (su_ioveclen_t)(n - total);
iov[i].mv_base = (char *)iov[i].mv_base + (n - total);
if (tport_queue_rest(self, msg, &iov[i], iovused - i) < 0)
return tport_send_fatal(self, msg, tpn, "tport_queue_rest");
else
return 0;
}
else {
char const *comp = tpn->tpn_comp;
SU_DEBUG_1(("%s(%p): send truncated for %s/%s:%s%s%s\n",
"tport_vsend", (void *)self, tpn->tpn_proto, tpn->tpn_host, tpn->tpn_port,
comp ? ";comp=" : "", comp ? comp : ""));
msg_set_errno(msg, EIO);
return /* tport_send_fatal(self, msg, tpn, "tport_send") */ -1;
}
}
total += iov[i].mv_len;
}
/* We have sent a complete message */
tport_sent_message(self, msg, 0);
if (!tport_is_secondary(self))
return 0;
ai = msg_addrinfo(msg); assert(ai);
close_after = (ai->ai_flags & TP_AI_CLOSE) == TP_AI_CLOSE;
sdwn_after = (ai->ai_flags & TP_AI_SHUTDOWN) == TP_AI_SHUTDOWN ||
self->tp_send_close;
if (close_after || sdwn_after)
tport_shutdown0(self, close_after ? 2 : 1);
return 0;
}
static
ssize_t tport_vsend(tport_t *self,
msg_t *msg,
tp_name_t const *tpn,
msg_iovec_t iov[],
size_t iovused,
struct sigcomp_compartment *cc)
{
ssize_t n;
su_addrinfo_t *ai = msg_addrinfo(msg);
if (cc) {
n = tport_send_comp(self, msg, iov, iovused, cc, self->tp_comp);
}
else {
ai->ai_flags &= ~TP_AI_COMPRESSED;
n = self->tp_pri->pri_vtable->vtp_send(self, msg, iov, iovused);
}
if (n == 0)
return 0;
if (n == -1)
return tport_send_error(self, msg, tpn, "tport_vsend");
tport_sent_bytes(self, n, n); /* Sigcomp will decrease on_line accodingly */
if (n > 0 && self->tp_master->mr_dump_file)
tport_dump_iovec(self, msg, n, iov, iovused, "sent", "to");
if (tport_log->log_level >= 7) {
size_t i, m = 0;
for (i = 0; i < iovused; i++)
m += iov[i].mv_len;
if (tpn == NULL || tport_is_connection_oriented(self))
tpn = self->tp_name;
SU_DEBUG_7(("%s(%p): "MOD_ZU" bytes of "MOD_ZU" to %s/%s:%s%s\n",
"tport_vsend", (void *)self, n, m, tpn->tpn_proto, tpn->tpn_host,
tpn->tpn_port,
(ai->ai_flags & TP_AI_COMPRESSED) ? ";comp=sigcomp" : ""));
}
return n;
}
static
int tport_send_error(tport_t *self, msg_t *msg, tp_name_t const *tpn,
char const *who)
{
int error = su_errno();
if (error == EPIPE) {
/*Xyzzy*/
}
if (su_is_blocking(error)) {
su_addrinfo_t *ai = msg_addrinfo(msg);
char const *comp = (ai->ai_flags & TP_AI_COMPRESSED) ? ";comp=sigcomp" : "";
SU_DEBUG_5(("%s(%p): %s with (s=%d %s/%s:%s%s)\n",
who, (void *)self, "EAGAIN", (int)self->tp_socket,
tpn->tpn_proto, tpn->tpn_host, tpn->tpn_port, comp));
return 0;
}
msg_set_errno(msg, error);
return tport_send_fatal(self, msg, tpn, who);
}
static
int tport_send_fatal(tport_t *self, msg_t *msg, tp_name_t const *tpn,
char const *who)
{
su_addrinfo_t *ai = msg_addrinfo(msg);
char const *comp = (ai->ai_flags & TP_AI_COMPRESSED) ? ";comp=sigcomp" : "";
int error = msg_errno(msg);
if (self->tp_addrinfo->ai_family == AF_INET) {
SU_DEBUG_3(("%s(%p): %s with (s=%d %s/%s:%s%s)\n",
who, (void *)self, su_strerror(error), (int)self->tp_socket,
tpn->tpn_proto, tpn->tpn_host, tpn->tpn_port, comp));
}
#if SU_HAVE_IN6
else if (self->tp_addrinfo->ai_family == AF_INET6) {
su_sockaddr_t const *su = (su_sockaddr_t const *)ai->ai_addr;
SU_DEBUG_3(("%s(%p): %s with (s=%d, IP6=%s/%s:%s%s"
" (scope=%i) addrlen=%u)\n",
who, (void *)self, su_strerror(error), (int)self->tp_socket,
tpn->tpn_proto, tpn->tpn_host, tpn->tpn_port, comp,
su->su_scope_id, (unsigned)ai->ai_addrlen));
}
#endif
else {
SU_DEBUG_3(("%s(%p): %s with (s=%d, AF=%u addrlen=%u)%s\n",
who, (void *)self, su_strerror(error),
(int)self->tp_socket, ai->ai_family, (unsigned)ai->ai_addrlen, comp));
}
#if 0
int i;
for (i = 0; i < iovused; i++)
SU_DEBUG_7(("\t\tiov[%d] = { %d bytes @ %p }\n",
i, iov[i].siv_len, (void *)iov[i].siv_base));
#endif
if (tport_is_connection_oriented(self)) {
tport_error_report(self, error, NULL);
if (tport_has_connection(self))
tport_close(self);
}
return -1;
}
static
int tport_queue_rest(tport_t *self,
msg_t *msg,
msg_iovec_t iov[],
size_t iovused)
{
size_t iovlen = self->tp_iovlen;
assert(tport_is_connection_oriented(self));
assert(self->tp_queue == NULL ||
self->tp_queue[self->tp_qhead] == NULL ||
self->tp_queue[self->tp_qhead] == msg);
if (tport_queue(self, msg) < 0)
return -1;
assert(self->tp_queue[self->tp_qhead] == msg);
if (self->tp_iov == NULL) {
if (iovlen < 40) iovlen = 40;
if (iovlen < iovused) iovlen = iovused;
self->tp_iov = su_alloc(self->tp_home, iovlen * sizeof(iov[0]));
self->tp_iovlen = iovlen;
if (!self->tp_iov) {
msg_set_errno(msg, errno);
return -1;
}
memcpy(self->tp_iov, iov, iovused * sizeof(iov[0]));
iov = self->tp_iov;
}
self->tp_unsent = iov;
self->tp_unsentlen = iovused;
/* the POLLOUT event is far too unreliable with SCTP */
if (self->tp_addrinfo->ai_protocol == IPPROTO_SCTP)
return 0;
/* Ask for a send event */
tport_set_events(self, SU_WAIT_OUT, 0);
return 0;
}
/** Queue a message to transport.
*
* The tport_tqueue() function queues a message in the send queue. It is
* used by an (server) application that is required to send (response)
* messages in certain order. For example, a HTTP server or proxy may
* receive multiple requests from a single TCP connection. The server is
* required to answer to the requests in same order as they are received.
* The responses are, however, sometimes generated asynchronously, that is,
* a response to a later request may be ready earlier. For that purpose, the
* HTTP protocol stack queues an empty response message immediately upon
* receiving a request. Other messages cannot be sent before the queued one.
*
* The function tport_tqsend() is used to send the completed response message.
*
* @param self pointer to transport object
* @param msg message to be inserted into queue
* @param tag,value,... tagged argument list
*
* @TAGS
* @par Currently none.
*
* @retval 0 when successful
* @retval -1 upon an error
* @ERRORS
* @ERROR EINVAL Invalid argument(s).
* @ERROR ENOMEM Memory was exhausted.
* @ERROR ENOBUFS The transport object queue was full.
*
* @deprecated Alternative interface will be provided in near future.
*
* @sa tport_tqsend()
*/
int tport_tqueue(tport_t *self, msg_t *msg,
tag_type_t tag, tag_value_t value, ...)
{
msg_unprepare(msg);
return tport_queue(self, msg);
}
/** Return number of queued messages. */
isize_t tport_queuelen(tport_t const *self)
{
isize_t retval = 0;
if (self && self->tp_queue) {
unsigned short i, N = self->tp_params->tpp_qsize;
for (i = self->tp_qhead; self->tp_queue[i]; i = (i + 1) % N)
retval++;
}
return retval;
}
static
int tport_queue(tport_t *self, msg_t *msg)
{
unsigned short qhead = self->tp_qhead;
unsigned short N = self->tp_params->tpp_qsize;
SU_DEBUG_7(("tport_queue(%p): queueing %p for %s/%s:%s\n",
(void *)self, (void *)msg,
self->tp_protoname, self->tp_host, self->tp_port));
if (self->tp_queue == NULL) {
assert(N > 0);
assert(qhead == 0);
self->tp_queue = su_zalloc(self->tp_home, N * sizeof(msg));
if (!self->tp_queue) {
msg_set_errno(msg, errno);
return -1;
}
}
if (self->tp_queue[qhead] == msg)
return 0;
while (self->tp_queue[qhead]) {
qhead = (qhead + 1) % N;
if (qhead == self->tp_qhead) {
msg_set_errno(msg, ENOBUFS);
return -1;
}
}
self->tp_queue[qhead] = msg_ref_create(msg);
return 0;
}
/** Send a queued message (and queue another, if required).
*
* The function tport_tqsend() sends a message to the transport.
*
* @deprecated Alternative interface will be provided in near future.
*/
int tport_tqsend(tport_t *self, msg_t *msg, msg_t *next,
tag_type_t tag, tag_value_t value, ...)
{
unsigned short qhead;
ta_list ta;
int reuse, sdwn_after, close_after;
unsigned short N;
su_addrinfo_t *ai;
if (self == NULL)
return -1;
qhead = self->tp_qhead;
N = self->tp_params->tpp_qsize;
reuse = self->tp_reusable;
sdwn_after = 0;
close_after = 0;
ta_start(ta, tag, value);
tl_gets(ta_args(ta),
TPTAG_REUSE_REF(reuse),
TPTAG_SDWN_AFTER_REF(sdwn_after),
TPTAG_CLOSE_AFTER_REF(close_after),
TAG_END());
ta_end(ta);
/* If "next", make sure we can queue it */
if (next && self->tp_queue[qhead == 0 ? N - 1 : qhead - 1]) {
msg_set_errno(next, ENOBUFS);
return -1;
}
/* Prepare message for sending - i.e., encode it */
if (msg_prepare(msg) < 0) {
msg_set_errno(msg, errno);
return -1;
}
tport_peer_address(self, msg); /* Set addrinfo */
if (next == NULL) {
ai = msg_addrinfo(msg);
if (sdwn_after)
ai->ai_flags |= TP_AI_SHUTDOWN;
if (close_after)
ai->ai_flags |= TP_AI_CLOSE;
if (self->tp_queue[qhead] == msg) {
tport_send_queue(self);
tport_set_secondary_timer(self);
}
return 0;
}
ai = msg_addrinfo(next);
if (sdwn_after)
ai->ai_flags |= TP_AI_SHUTDOWN;
if (close_after)
ai->ai_flags |= TP_AI_CLOSE;
if (self->tp_queue[qhead] == msg) {
/* XXX - what about errors? */
tport_send_msg(self, msg, self->tp_name, NULL);
tport_set_secondary_timer(self);
if (!self->tp_unsent) {
msg_destroy(self->tp_queue[qhead]);
if ((self->tp_queue[qhead] = msg_ref_create(next)))
msg_unprepare(next);
return 0;
}
}
while (self->tp_queue[qhead] && self->tp_queue[qhead] != msg) {
qhead = (qhead + 1) % N;
if (qhead == self->tp_qhead)
break;
}
if (self->tp_queue[qhead] != msg) {
msg_set_errno(next, EINVAL);
return -1;
}
msg = msg_ref_create(next);
do {
qhead = (qhead + 1) % N;
next = self->tp_queue[qhead]; self->tp_queue[qhead] = msg; msg = next;
/* Above we made sure that there is an empty slot */
assert(!next || qhead != self->tp_qhead);
} while (next);
return 0;
}
/** Send event.
*
* Process SU_WAIT_OUT event.
*/
void tport_send_event(tport_t *self)
{
assert(tport_is_connection_oriented(self));
SU_DEBUG_7(("tport_send_event(%p) - ready to send to (%s/%s:%s)\n",
(void *)self, self->tp_protoname, self->tp_host, self->tp_port));
tport_send_queue(self);
tport_set_secondary_timer(self);
}
/** Send queued messages */
void tport_send_queue(tport_t *self)
{
msg_t *msg;
msg_iovec_t *iov;
size_t i, iovused, n, total;
unsigned short qhead = self->tp_qhead, N = self->tp_params->tpp_qsize;
assert(self->tp_queue && self->tp_queue[qhead]);
msg = self->tp_queue[qhead];
iov = self->tp_unsent, self->tp_unsent = NULL;
iovused = self->tp_unsentlen, self->tp_unsentlen = 0;
if (iov && iovused) {
ssize_t e;
self->tp_stime = self->tp_ktime = su_now();
e = tport_vsend(self, msg, self->tp_name, iov, iovused, NULL);
if (e == -1) /* XXX */
return;
n = (size_t)e;
if (n > 0 && self->tp_master->mr_log && self->tp_slogged != msg) {
tport_log_msg(self, msg, "send", "to", self->tp_stime);
self->tp_slogged = msg;
}
for (i = 0, total = 0; i < iovused; i++) {
if (total + (size_t)iov[i].mv_len > n) {
iov[i].mv_len -= (su_ioveclen_t)(n - total);
iov[i].mv_base = (char *)iov[i].mv_base + (n - total);
self->tp_unsent = iov + i;
self->tp_unsentlen = iovused - i;
return;
}
total += iov[i].mv_len;
}
assert(total == n);
/* We have sent a complete message */
self->tp_queue[qhead] = NULL;
tport_sent_message(self, msg, 0);
msg_destroy(msg);
qhead = (qhead + 1) % N;
}
while (msg_is_prepared(msg = self->tp_queue[self->tp_qhead = qhead])) {
/* XXX - what about errors? */
tport_send_msg(self, msg, self->tp_name, NULL);
if (self->tp_unsent)
return;
msg = self->tp_queue[qhead]; /* tport_send_msg() may flush queue! */
self->tp_queue[qhead] = NULL;
msg_destroy(msg);
qhead = (qhead + 1) % N;
}
/* No more send event(s)? */
tport_set_events(self, 0, SU_WAIT_OUT);
}
static int msg_select_addrinfo(msg_t *msg, su_addrinfo_t *res);
static int
tport_resolve(tport_t *self, msg_t *msg, tp_name_t const *tpn)
{
int error;
char ipaddr[TPORT_HOSTPORTSIZE];
su_addrinfo_t *res, hints[1] = {{ 0 }};
char const *host;
su_sockaddr_t *su;
hints->ai_socktype = self->tp_addrinfo->ai_socktype;
hints->ai_protocol = self->tp_addrinfo->ai_protocol;
#if HAVE_OPEN_C
if (host_is_ip_address(tpn->tpn_host))
hints->ai_flags |= AI_NUMERICHOST;
#endif
if (tpn->tpn_host[0] == '[') {
/* Remove [] around IPv6 address */
char *end;
hints->ai_flags |= AI_NUMERICHOST;
host = strncpy(ipaddr, tpn->tpn_host + 1, sizeof(ipaddr) - 1);
ipaddr[sizeof(ipaddr) - 1] = '\0';
if ((end = strchr(host, ']'))) {
*end = 0;
}
else {
SU_DEBUG_3(("tport_resolve: bad IPv6 address\n"));
msg_set_errno(msg, EINVAL);
return -1;
}
}
else
host = tpn->tpn_host;
if ((error = su_getaddrinfo(host, tpn->tpn_port, hints, &res))) {
SU_DEBUG_3(("tport_resolve: getaddrinfo(\"%s\":%s): %s\n",
tpn->tpn_host, tpn->tpn_port,
su_gai_strerror(error)));
msg_set_errno(msg, ENXIO);
return -1;
}
error = msg_select_addrinfo(msg, res);
su = (su_sockaddr_t *) msg_addrinfo(msg)->ai_addr;
#if SU_HAVE_IN6
SU_DEBUG_9(("tport_resolve addrinfo = %s%s%s:%d\n",
su->su_family == AF_INET6 ? "[" : "",
su_inet_ntop(su->su_family, SU_ADDR(su), ipaddr, sizeof(ipaddr)),
su->su_family == AF_INET6 ? "]" : "",
htons(su->su_port)));
#else
SU_DEBUG_9(("tport_resolve addrinfo = %s%s%s:%d\n",
"",
inet_ntop(su->su_family, SU_ADDR(su), ipaddr, sizeof(ipaddr)),
"",
htons(su->su_port)));
#endif
su_freeaddrinfo(res);
return error;
}
static int
msg_select_addrinfo(msg_t *msg, su_addrinfo_t *res)
{
su_addrinfo_t *ai, *mai = msg_addrinfo(msg);
su_sockaddr_t *su = (su_sockaddr_t *)mai->ai_addr;
for (ai = res; ai; ai = ai->ai_next) {
#if SU_HAVE_IN6
if (ai->ai_family != AF_INET && ai->ai_family != AF_INET6)
continue;
#else
if (ai->ai_family != AF_INET)
continue;
#endif
if (ai->ai_protocol == 0)
continue;
if (ai->ai_addrlen > sizeof(su_sockaddr_t))
continue;
mai->ai_family = ai->ai_family;
mai->ai_socktype = ai->ai_socktype;
mai->ai_protocol = ai->ai_protocol;
if (ai->ai_addrlen < sizeof(su_sockaddr_t))
memset(su, 0, sizeof(su_sockaddr_t));
memcpy(su, ai->ai_addr, ai->ai_addrlen);
if (su_sockaddr_size(su))
mai->ai_addrlen = su_sockaddr_size(su);
else
mai->ai_addrlen = ai->ai_addrlen;
return 0;
}
msg_set_errno(msg, EAFNOSUPPORT);
return -1;
}
/** Copy peer address to msg */
void
tport_peer_address(tport_t *self, msg_t *msg)
{
su_addrinfo_t *mai = msg_addrinfo(msg);
su_addrinfo_t const *tai = self->tp_addrinfo;
void *maddr = mai->ai_addr;
int flags = mai->ai_flags;
memcpy(mai, tai, sizeof *mai);
mai->ai_addr = memcpy(maddr, tai->ai_addr, tai->ai_addrlen);
mai->ai_flags = flags;
}
/** Process error event.
*
* Return events that can be processed afterwards.
*/
int tport_error_event(tport_t *self)
{
int errcode;
su_sockaddr_t name[1] = {{ 0 }};
name->su_family = AF_UNSPEC; /* 0 */
if (tport_is_udp(self)) {
errcode = tport_udp_error(self, name);
}
else {
/* Process error event for basic transport. */
errcode = su_soerror(self->tp_socket);
}
if (errcode == 0 || errcode == EPIPE)
return errcode;
tport_error_report(self, errcode, name);
return 0;
}
/** Mark message as waiting for a response.
*
* @return Positive integer, or -1 upon an error.
*/
int tport_pend(tport_t *self,
msg_t *msg,
tport_pending_error_f *callback,
tp_client_t *client)
{
tport_pending_t *pending;
if (self == NULL || callback == NULL)
return -1;
if (msg == NULL && tport_is_primary(self))
return -1;
SU_DEBUG_7(("tport_pend(%p): pending %p for %s/%s:%s (already %u)\n",
(void *)self, (void *)msg,
self->tp_protoname, self->tp_host, self->tp_port,
self->tp_pused));
if (self->tp_released == NULL) {
unsigned i, len = 8;
if (self->tp_plen)
len = 2 * self->tp_plen;
pending = su_realloc(self->tp_home,
self->tp_pending, len * sizeof(*pending));
if (!pending) {
msg_set_errno(msg, errno);
return -1;
}
memset(pending + self->tp_plen, 0, (len - self->tp_plen) * sizeof(*pending));
for (i = self->tp_plen; i + 1 < len; i++)
pending[i].p_client = pending + i + 1;
self->tp_released = pending + self->tp_plen;
self->tp_pending = pending;
self->tp_plen = len;
}
pending = self->tp_released;
self->tp_released = pending->p_client;
pending->p_callback = callback;
pending->p_client = client;
pending->p_msg = msg;
pending->p_reported = self->tp_reported;
self->tp_pused++;
return (pending - self->tp_pending) + 1;
}
/** Mark message as no more pending */
int tport_release(tport_t *self,
int pendd,
msg_t *msg,
msg_t *reply,
tp_client_t *client,
int still_pending)
{
tport_pending_t *pending;
if (self == NULL || pendd <= 0 || pendd > (int)self->tp_plen)
return su_seterrno(EINVAL), -1;
pending = self->tp_pending + (pendd - 1);
if (pending->p_client != client ||
pending->p_msg != msg) {
SU_DEBUG_1(("%s(%p): %u %p by %p not pending\n",
__func__, (void *)self,
pendd, (void *)msg, (void *)client));
return su_seterrno(EINVAL), -1;
}
SU_DEBUG_7(("%s(%p): %p by %p with %p%s\n",
__func__, (void *)self,
(void *)msg, (void *)client, (void *)reply,
still_pending ? " (preliminary)" : ""));
/* sigcomp can here associate request (msg) with response (reply) */
if (still_pending)
return 0;
/* Just to make sure nobody uses stale data */
memset(pending, 0, sizeof(*pending));
pending->p_client = self->tp_released;
self->tp_released = pending;
self->tp_pused--;
return 0;
}
/** Report error to pending messages with destination */
int
tport_pending_error(tport_t *self, su_sockaddr_t const *dst, int error)
{
unsigned i, reported, callbacks;
tport_pending_t *pending;
msg_t *msg;
su_addrinfo_t const *ai;
assert(self);
callbacks = 0;
reported = ++self->tp_reported;
if (self->tp_pused == 0)
return 0;
for (i = 0; i < self->tp_plen; i++) {
pending = self->tp_pending + i;
if (!pending->p_callback)
continue;
if (pending->p_reported == reported)
continue;
msg = pending->p_msg;
if (dst && msg) {
ai = msg_addrinfo(msg);
if (su_cmp_sockaddr(dst, (su_sockaddr_t *)ai->ai_addr) != 0)
continue;
}
msg_set_errno(msg, error);
pending->p_reported = reported;
pending->p_callback(self->TP_STACK, pending->p_client, self, msg, error);
callbacks++;
}
return callbacks;
}
/** Report error via pending message */
int
tport_pending_errmsg(tport_t *self, msg_t *msg, int error)
{
unsigned i, reported, callbacks;
tport_pending_t *pending;
assert(self); assert(msg);
callbacks = 0;
reported = ++self->tp_reported;
msg_set_errno(msg, error);
if (self->tp_pused == 0)
return 0;
for (i = 0; i < self->tp_plen; i++) {
pending = self->tp_pending + i;
if (!pending->p_client ||
pending->p_msg != msg ||
pending->p_reported == reported)
continue;
pending->p_reported = reported;
pending->p_callback(self->TP_STACK, pending->p_client, self, msg, error);
callbacks++;
}
return callbacks;
}
/** Set transport magic. */
void tport_set_magic(tport_t *self, tp_magic_t *magic)
{
self->tp_magic = magic;
}
/** Get transport magic. */
tp_magic_t *tport_magic(tport_t const *self)
{
return self ? self->tp_magic : NULL;
}
/** Get primary transport (or self, if primary) */
tport_t *tport_parent(tport_t const *self)
{
return self ? self->tp_pri->pri_primary : NULL;
}
/** Get list of primary transports */
tport_t *tport_primaries(tport_t const *self)
{
if (self)
return self->tp_master->mr_primaries->pri_primary;
else
return NULL;
}
/** Get next transport */
tport_t *tport_next(tport_t const *self)
{
if (self == NULL)
return NULL;
else if (tport_is_master(self))
return ((tport_master_t *)self)->mr_primaries->pri_primary;
else if (tport_is_primary(self))
return ((tport_primary_t *)self)->pri_next->pri_primary;
else
return tprb_succ(self);
}
/** Get secondary transports. */
tport_t *tport_secondary(tport_t const *self)
{
if (tport_is_primary(self))
return self->tp_pri->pri_open;
else
return NULL;
}
#if 0
void tport_hints(tport_t const *self, su_addrinfo_t *hints)
{
hints->ai_protocol = self->tp_addrinfo->ai_protocol;
hints->ai_socktype = self->tp_addrinfo->ai_socktype;
}
#endif
/** Get transport address list. */
su_addrinfo_t const *tport_get_address(tport_t const *self)
{
return self ? self->tp_addrinfo : NULL;
}
/** Get transport name. */
tp_name_t const *tport_name(tport_t const *self)
{
return self->tp_name;
}
/** Get transport identifier. */
char const *tport_ident(tport_t const *self)
{
return self ? self->tp_ident : NULL;
}
/** Get transport by protocol name. */
tport_t *tport_by_protocol(tport_t const *self, char const *proto)
{
if (proto && strcmp(proto, tpn_any) != 0) {
for (; self; self = tport_next(self))
if (strcasecmp(proto, self->tp_protoname) == 0)
break;
}
return (tport_t *)self;
}
/** Get transport by protocol name. */
tport_t *tport_primary_by_name(tport_t const *tp, tp_name_t const *tpn)
{
char const *ident = tpn->tpn_ident;
char const *proto = tpn->tpn_proto;
char const *comp = tpn->tpn_comp;
int family = 0;
tport_primary_t const *self, *nocomp = NULL;
self = tp ? tp->tp_master->mr_primaries : NULL;
if (ident && strcmp(ident, tpn_any) == 0)
ident = NULL;
if (tpn->tpn_host == NULL)
family = 0;
#if SU_HAVE_IN6
else if (host_is_ip6_address(tpn->tpn_host))
family = AF_INET6;
#endif
else if (host_is_ip4_address(tpn->tpn_host))
family = AF_INET;
else
family = 0;
if (proto && strcmp(proto, tpn_any) == 0)
proto = NULL;
if (!ident && !proto && !family && !comp)
return (tport_t *)self; /* Anything goes */
comp = tport_canonize_comp(comp);
for (; self; self = self->pri_next) {
tp = self->pri_primary;
if (ident && strcmp(ident, tp->tp_ident))
continue;
if (family) {
if (family == AF_INET && !tport_has_ip4(tp))
continue;
#if SU_HAVE_IN6
if (family == AF_INET6 && !tport_has_ip6(tp))
continue;
#endif
}
if (proto && strcasecmp(proto, tp->tp_protoname))
continue;
if (comp && comp != tp->tp_name->tpn_comp) {
if (tp->tp_name->tpn_comp == NULL && nocomp == NULL)
nocomp = self;
continue;
}
break;
}
if (self)
return (tport_t *)self;
else
return (tport_t *)nocomp;
}
/** Get transport by name. */
tport_t *tport_by_name(tport_t const *self, tp_name_t const *tpn)
{
tport_t const *sub, *next;
char const *canon, *host, *port, *comp;
#if SU_HAVE_IN6
char *end, ipaddr[TPORT_HOSTPORTSIZE];
#endif
assert(self); assert(tpn);
assert(tpn->tpn_proto); assert(tpn->tpn_host); assert(tpn->tpn_port);
assert(tpn->tpn_canon);
if (!tport_is_primary(self))
self = tport_primary_by_name(self, tpn);
host = strcmp(tpn->tpn_host, tpn_any) ? tpn->tpn_host : NULL;
port = strcmp(tpn->tpn_port, tpn_any) ? tpn->tpn_port : NULL;
canon = tpn->tpn_canon;
comp = tport_canonize_comp(tpn->tpn_comp);
if (self && host && port) {
int resolved = 0, cmp;
socklen_t sulen;
su_sockaddr_t su[1];
sub = self->tp_pri->pri_open;
memset(su, 0, sizeof su);
#if SU_HAVE_IN6
if (host_is_ip6_reference(host)) {
/* Remove [] around IPv6 address */
host = strncpy(ipaddr, host + 1, sizeof(ipaddr) - 1);
ipaddr[sizeof(ipaddr) - 1] = '\0';
if ((end = strchr(host, ']')))
*end = 0;
su->su_len = sulen = (socklen_t) sizeof (struct sockaddr_in6);
su->su_family = AF_INET6;
}
else if (host_is_ip6_address(host)) {
su->su_len = sulen = (socklen_t) sizeof (struct sockaddr_in6);
su->su_family = AF_INET6;
}
else
#endif
{
su->su_len = sulen = (socklen_t) sizeof (struct sockaddr_in);
su->su_family = AF_INET;
}
su->su_port = htons(strtoul(port, NULL, 10));
if (su_inet_pton(su->su_family, host, SU_ADDR(su)) > 0) {
resolved = 1;
next = NULL;
/* Depth-first search */
while (sub) {
cmp = (int)((size_t)sub->tp_addrlen - (size_t)sulen);
if (cmp == 0)
cmp = memcmp(sub->tp_addr, su, sulen);
if (cmp == 0) {
if (sub->tp_left) {
next = sub;
sub = sub->tp_left;
continue;
}
break;
}
else if (next) {
sub = next;
break;
}
else if (cmp > 0) {
sub = sub->tp_left;
continue;
}
else /* if (cmp < 0) */ {
sub = sub->tp_right;
continue;
}
}
}
else {
SU_DEBUG_7(("tport(%p): EXPENSIVE unresolved " TPN_FORMAT "\n",
(void *)self, TPN_ARGS(tpn)));
sub = tprb_first(sub);
}
for (; sub; sub = tprb_succ(sub)) {
if (!sub->tp_reusable)
continue;
if (!tport_is_registered(sub))
continue;
if (tport_is_shutdown(sub))
continue;
if (comp != sub->tp_name->tpn_comp)
continue;
if (resolved) {
if ((socklen_t)sub->tp_addrlen != sulen ||
memcmp(sub->tp_addr, su, sulen)) {
SU_DEBUG_7(("tport(%p): not found by name " TPN_FORMAT "\n",
(void *)self, TPN_ARGS(tpn)));
break;
}
SU_DEBUG_7(("tport(%p): found %p by name " TPN_FORMAT "\n",
(void *)self, (void *)sub, TPN_ARGS(tpn)));
}
else if ((strcasecmp(canon, sub->tp_canon) &&
strcasecmp(host, sub->tp_host)) ||
strcmp(port, sub->tp_port))
continue;
return (tport_t *)sub;
}
}
return (tport_t *)self;
}
/** Get transport from primary by addrinfo. */
tport_t *tport_by_addrinfo(tport_primary_t const *pri,
su_addrinfo_t const *ai,
tp_name_t const *tpn)
{
tport_t const *sub, *maybe;
struct sockaddr const *sa;
int cmp;
char const *comp;
assert(pri); assert(ai);
sa = ai->ai_addr;
sub = pri->pri_open, maybe = NULL;
comp = tport_canonize_comp(tpn->tpn_comp);
/* Find leftmost (prevmost) matching tport */
while (sub) {
cmp = (int)(sub->tp_addrlen - ai->ai_addrlen);
if (cmp == 0)
cmp = memcmp(sub->tp_addr, sa, ai->ai_addrlen);
if (cmp == 0) {
if (sub->tp_left) {
maybe = sub;
sub = sub->tp_left;
continue;
}
break;
}
else if (maybe) {
sub = maybe;
break;
}
else if (cmp > 0) {
sub = sub->tp_left;
continue;
}
else /* if (cmp < 0) */ {
sub = sub->tp_right;
continue;
}
}
for (; sub; sub = tprb_succ(sub)) {
if (!sub->tp_reusable)
continue;
if (!tport_is_registered(sub))
continue;
if (tport_is_shutdown(sub))
continue;
if (comp != sub->tp_name->tpn_comp)
continue;
if (sub->tp_addrlen != ai->ai_addrlen
|| memcmp(sub->tp_addr, sa, ai->ai_addrlen)) {
sub = NULL;
break;
}
break;
}
if (sub)
SU_DEBUG_7(("%s(%p): found %p by name " TPN_FORMAT "\n",
__func__, (void *)pri, (void *)sub, TPN_ARGS(tpn)));
else
SU_DEBUG_7(("%s(%p): not found by name " TPN_FORMAT "\n",
__func__, (void *)pri, TPN_ARGS(tpn)));
return (tport_t *)sub;
}
/** Get transport name from URL. */
int tport_name_by_url(su_home_t *home,
tp_name_t *tpn,
url_string_t const *us)
{
size_t n;
url_t url[1];
char *b;
n = url_xtra(us->us_url);
b = su_alloc(home, n);
if (b == NULL || url_dup(b, n, url, us->us_url) < 0) {
su_free(home, b);
return -1;
}
tpn->tpn_proto = url_tport_default(url->url_type);
tpn->tpn_canon = url->url_host;
tpn->tpn_host = url->url_host;
tpn->tpn_port = url_port(url);
if (tpn->tpn_host == NULL || tpn->tpn_host[0] == '\0' ||
tpn->tpn_port == NULL || tpn->tpn_port[0] == '\0') {
su_free(home, b);
return -1;
}
if (url->url_params) {
for (b = (char *)url->url_params; b[0]; b += n) {
n = strcspn(b, ";");
if (n > 10 && strncasecmp(b, "transport=", 10) == 0)
tpn->tpn_proto = b + 10;
else if (n > 6 && strncasecmp(b, "maddr=", 6) == 0)
tpn->tpn_host = b + 6;
if (b[n])
b[n++] = '\0';
}
}
return 0;
}
/** Check if transport named is already resolved */
int tport_name_is_resolved(tp_name_t const *tpn)
{
if (!tpn->tpn_host)
return 0;
return host_is_ip_address(tpn->tpn_host);
}
/** Duplicate name.
*
* The tport_name_dup() function copies strings belonging to the transport
* name. It returns the copied strings via the @a dst transport name
* structure. The memory block required for copies is allocated from the
* memory @a home. Please note that only one memory block is allocated, so
* the memory can be reclainmed only by deinitializing the memory home
* itself.
*
* @retval 0 when successful
* @retval -1 upon an error
*/
int tport_name_dup(su_home_t *home,
tp_name_t *dst,
tp_name_t const *src)
{
size_t n_proto, n_host, n_port, n_canon, n_comp = 0;
char *s;
if (strcmp(src->tpn_proto, tpn_any))
n_proto = strlen(src->tpn_proto) + 1;
else
n_proto = 0;
n_host = strlen(src->tpn_host) + 1;
n_port = strlen(src->tpn_port) + 1;
if (src->tpn_comp != NULL)
n_comp = strlen(src->tpn_comp) + 1;
if (src->tpn_canon != src->tpn_host &&
strcmp(src->tpn_canon, src->tpn_host))
n_canon = strlen(src->tpn_canon) + 1;
else
n_canon = 0;
s = su_alloc(home, n_proto + n_canon + n_host + n_port + n_comp);
if (n_proto)
dst->tpn_proto = memcpy(s, src->tpn_proto, n_proto), s += n_proto;
else
dst->tpn_proto = tpn_any;
dst->tpn_host = memcpy(s, src->tpn_host, n_host), s += n_host;
dst->tpn_port = memcpy(s, src->tpn_port, n_port), s += n_port;
if (n_canon)
dst->tpn_canon = memcpy(s, src->tpn_canon, n_canon), s += n_canon;
else
dst->tpn_canon = dst->tpn_host;
if (n_comp)
dst->tpn_comp = memcpy(s, src->tpn_comp, n_comp), s += n_comp;
else
dst->tpn_comp = NULL;
return 0;
}
/** Convert a sockaddr structure into printable form. */
char *tport_hostport(char buf[], isize_t bufsize,
su_sockaddr_t const *su,
int with_port_and_brackets)
{
char *b = buf;
size_t n;
#if SU_HAVE_IN6
if (with_port_and_brackets > 1 || su->su_family == AF_INET6) {
*b++ = '['; bufsize--;
}
#endif
if (su_inet_ntop(su->su_family, SU_ADDR(su), b, bufsize) == NULL)
return NULL;
n = strlen(b);
if (bufsize < n + 2)
return NULL;
bufsize -= n; b += n;
#if SU_HAVE_IN6
if (with_port_and_brackets > 1 || su->su_family == AF_INET6) {
*b++ = ']'; bufsize--;
}
if (with_port_and_brackets) {
unsigned short port = ntohs(su->su_port);
if (port != 0) {
n = snprintf(b, bufsize, ":%u", port);
if (n <= 0)
return NULL;
b += n;
if (bufsize > n)
bufsize -= n;
else
bufsize = 0;
}
}
#endif
if (bufsize)
*b++ = 0;
return buf;
}
/** @internal Update receive statistics. */
void tport_recv_bytes(tport_t *self, ssize_t bytes, ssize_t on_line)
{
self->tp_stats.recv_bytes += bytes;
self->tp_stats.recv_on_line += on_line;
if (self != self->tp_pri->pri_primary) {
self = self->tp_pri->pri_primary;
self->tp_stats.recv_bytes += bytes;
self->tp_stats.recv_on_line += on_line;
}
self = self->tp_master->mr_master;
self->tp_stats.recv_bytes += bytes;
self->tp_stats.recv_on_line += on_line;
}
/** @internal Update message-based receive statistics. */
void tport_recv_message(tport_t *self, msg_t *msg, int error)
{
error = error != 0;
self->tp_stats.recv_msgs++;
self->tp_stats.recv_errors += error;
if (self != self->tp_pri->pri_primary) {
self = self->tp_pri->pri_primary;
self->tp_stats.recv_msgs++;
self->tp_stats.recv_errors += error;
}
self = self->tp_master->mr_master;
self->tp_stats.recv_msgs++;
self->tp_stats.recv_errors += error;
}
/** @internal Update send statistics. */
void tport_sent_bytes(tport_t *self, ssize_t bytes, ssize_t on_line)
{
self->tp_stats.sent_bytes += bytes;
self->tp_stats.sent_on_line += on_line;
if (self != self->tp_pri->pri_primary) {
self = self->tp_pri->pri_primary;
self->tp_stats.sent_bytes += bytes;
self->tp_stats.sent_on_line += on_line;
}
self = self->tp_master->mr_master;
self->tp_stats.sent_bytes += bytes;
self->tp_stats.sent_on_line += on_line;
}
/** @internal Update message-based send statistics. */
void tport_sent_message(tport_t *self, msg_t *msg, int error)
{
self->tp_slogged = NULL;
error = error != 0;
self->tp_stats.sent_msgs++;
self->tp_stats.sent_errors += error;
if (self != self->tp_pri->pri_primary) {
self = self->tp_pri->pri_primary;
self->tp_stats.sent_msgs++;
self->tp_stats.sent_errors += error;
}
self = self->tp_master->mr_master;
self->tp_stats.sent_msgs++;
self->tp_stats.sent_errors += error;
}