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cmenet.c
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cmenet.c
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/***** Includes *****/
#include "config.h"
#if defined (__INTEL_COMPILER)
# pragma warning (disable: 1418)
#endif
#undef NDEBUG
#ifdef HAVE_WINDOWS_H
#ifndef FD_SETSIZE
#define FD_SETSIZE 1024
#endif
#include <winsock2.h>
#include <windows.h>
#include <process.h>
#include <time.h>
#define getpid() _getpid()
#else
#include <time.h>
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_SYS_TIMES_H
#include <sys/times.h>
#endif
#include <sys/socket.h>
#ifdef HAVE_SYS_SOCKIO_H
#include <sys/sockio.h>
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#ifdef HAVE_SYS_UN_H
#include <sys/un.h>
#endif
#ifdef HAVE_SYS_UIO_H
#include <sys/uio.h>
#endif
#ifdef HAVE_HOSTLIB_H
#include "hostLib.h"
#endif
#ifdef HAVE_STREAMS_UN_H
#include <streams/un.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#endif
#include <stdio.h>
#include <fcntl.h>
#ifndef HAVE_WINDOWS_H
#include <net/if.h>
#include <sys/ioctl.h>
#include <errno.h>
#else
#include <windows.h>
#define drand48() (((double)rand())/((double)RAND_MAX))
#define lrand48() rand()
#define srand48(x)
#include <ws2tcpip.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#undef NDEBUG
#include <assert.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#ifdef HAVE_MEMORY_H
#include <memory.h>
#endif
#include <atl.h>
#include "evpath.h"
#include "cm_transport.h"
#include "ev_select.h"
#ifndef _MSC_VER
#include <pthread.h>
#define thr_mutex_t pthread_mutex_t
#define thr_thread_t pthread_t
#define thr_condition_t pthread_cond_t
#define thr_thread_self() pthread_self()
#define thr_thread_exit(status) pthread_exit(status);
#define thr_thread_detach(thread) pthread_detach(thread);
#define thr_thread_yield() sched_yield()
#define thr_thread_join(t, s) pthread_join(t, s)
#define thr_mutex_init(m) pthread_mutex_init(&m, NULL);
#define thr_mutex_lock(m) pthread_mutex_lock(&m);
#define thr_mutex_unlock(m) pthread_mutex_unlock(&m);
#define thr_mutex_free(m) pthread_mutex_destroy(&m);
#define thr_condition_init(c) pthread_cond_init(&c, NULL);
#define thr_condition_wait(c, m) pthread_cond_wait(&c, &m);
#define thr_condition_signal(c) pthread_cond_signal(&c);
#define thr_condition_broadcast(c) pthread_cond_broadcast(&c);
#define thr_condition_free(c) pthread_cond_destroy(&c);
#define thr_thread_create(w,x,y,z) pthread_create(w,x,y,z);
#else
//#include <mutex>
#include <Windows.h>
#define thr_mutex_t HANDLE
#define thr_thread_t DWORD
#define thr_condition_t HANDLE
#define thr_thread_create(w,x,y,z) 0
#define thr_thread_self() GetCurrentThreadId()
#define thr_thread_exit(status)
#define thr_thread_detach(thread)
#define thr_thread_yield()
#define thr_thread_join(t, s) (void)s
#define thr_mutex_init(m)
#define thr_mutex_lock(m)
#define thr_mutex_unlock(m)
#define thr_mutex_free(m)
#define thr_condition_init(c)
#define thr_condition_wait(c, m)
#define thr_condition_signal(c)
#define thr_condition_broadcast(c)
#define thr_condition_free(c)
#endif
#ifdef USE_ZPL_ENET
#define ENET_IMPLEMENTATION
#define USE_IPV6
#define MAX_CLIENTS 4095
#include <netinet/in.h>
#include <zpl-enet/include/enet.h>
/* extra function to access the UDP socket FD */
ENET_API enet_uint32 enet_host_get_sock_fd(ENetHost *);
enet_uint32 enet_host_get_sock_fd(ENetHost *host) {
return host->socket;
}
extern void ZPLENETdummy() { // for warning suppression
(void) enet_initialize_with_callbacks(0, NULL);
(void) enet_deinitialize() ;
(void) enet_linked_version() ;
(void) enet_socket_listen(0, 0) ;
(void) enet_socket_accept(0, NULL) ;
(void) enet_socket_connect(0, NULL) ;
(void) enet_socket_get_option(0, (ENetSocketOption) 1, NULL) ;
(void) enet_socket_shutdown(0, (ENetSocketShutdown) 1) ;
(void) enet_socketset_select(0, NULL, NULL, 0) ;
(void) enet_address_get_host(NULL, NULL, 0 ) ;
(void) enet_host_get_peers_count( NULL) ;
(void) enet_host_get_packets_sent(NULL) ;
(void) enet_host_get_packets_received(NULL) ;
(void) enet_host_get_bytes_sent(NULL) ;
(void) enet_host_get_bytes_received(NULL) ;
(void) enet_host_get_received_data(NULL, NULL) ;
(void) enet_host_get_mtu(NULL) ;
(void) enet_peer_get_id(NULL) ;
(void) enet_peer_get_ip(NULL, NULL, 0) ;
(void) enet_peer_get_port(NULL) ;
(void) enet_peer_get_rtt(NULL) ;
(void) enet_peer_get_packets_sent(NULL) ;
(void) enet_peer_get_packets_lost(NULL) ;
(void) enet_peer_get_bytes_sent(NULL) ;
(void) enet_peer_get_bytes_received(NULL) ;
(void) enet_peer_get_state(NULL) ;
(void) enet_peer_get_data(NULL) ;
(void) enet_peer_set_data(NULL, NULL) ;
(void) enet_packet_get_data(NULL) ;
(void) enet_packet_get_length(NULL) ;
(void) enet_packet_set_free_callback(NULL, NULL) ;
(void) enet_packet_create_offset(NULL, 0, 0, 0) ;
(void) enet_crc32(NULL, 0) ;
(void) enet_host_check_events(NULL, NULL);
(void) enet_host_send_raw(NULL, NULL, NULL, 0) ;
(void) enet_host_send_raw_ex(NULL, NULL, NULL, 0, 0) ;
(void) enet_host_set_intercept(NULL, NULL) ;
(void) enet_host_broadcast(NULL, 0, NULL) ;
(void) enet_host_compress(NULL, NULL);
(void) enet_host_channel_limit(NULL, 0);
(void) enet_host_bandwidth_limit(NULL, 0,0);
(void) enet_peer_ping_interval(NULL, 0) ;
(void) enet_peer_disconnect_now(NULL, 0) ;
(void) enet_peer_disconnect_later(NULL, 0) ;
(void) enet_peer_throttle_configure(NULL, 0, 0, 0) ;
}
#define TPORT "CMZplEnet"
#define TRANSPORT_STRING "zplenet"
#define INTERFACE_NAME(NAME) libcmzplenet_LTX_ ## NAME
#else
#define TPORT "CMEnet"
#define MAX_CLIENTS 0
#define TRANSPORT_STRING "enet"
#define INTERFACE_NAME(NAME) libcmenet_LTX_ ## NAME
#include <enet/enet.h>
#endif
#include <time.h>
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef __MACH__
#include <mach/clock.h>
#include <mach/mach.h>
#endif
typedef struct _queued_data {
struct _queued_data *next;
struct enet_connection_data *econn_d;
ENetPacket *packet;
} *queued_data;
typedef struct func_list_item {
select_list_func func;
void *arg1;
void *arg2;
} FunctionListElement;
typedef struct enet_client_data {
CManager cm;
char *hostname;
int listen_port;
CMtrans_services svc;
ENetHost *server;
queued_data pending_data;
int wake_write_fd;
int wake_read_fd;
enet_uint32 last_host_service_zero_return;
CMTaskHandle periodic_handle;
thr_mutex_t enet_lock;
int enet_locked;
struct enet_connection_data *pending_connections;
} *enet_client_data_ptr;
typedef struct enet_connection_data {
char *remote_host;
#ifndef USE_IPV6
int remote_IP; /* in host byte order */
#else
struct in6_addr remote_IP;
int remote_IPv4; /* in host byte order */
#endif
int remote_contact_port;
ENetPeer *peer;
CMbuffer read_buffer;
int read_buffer_len;
ENetPacket *packet;
enet_client_data_ptr ecd;
CMConnection conn;
attr_list conn_attr_list;
int connect_condition;
struct enet_connection_data *next_pending;
} *enet_conn_data_ptr;
static atom_t CM_PEER_IP = -1;
static atom_t CM_PEER_LISTEN_PORT = -1;
static atom_t CM_NETWORK_POSTFIX = -1;
static atom_t CM_ENET_PORT = -1;
static atom_t CM_ENET_HOSTNAME = -1;
static atom_t CM_ENET_ADDR = -1;
static atom_t CM_ENET_CONN_TIMEOUT = -1;
static atom_t CM_ENET_CONN_REUSE = -1;
static atom_t CM_TRANSPORT = -1;
static enet_uint32 enet_host_service_warn_interval = 0;
#ifdef __cplusplus
extern "C"
#else
extern
#endif
attr_list
INTERFACE_NAME(non_blocking_listen)(CManager cm, CMtrans_services svc,
transport_entry trans, attr_list listen_info);
#define ENETlock(lock) IntENET_lock(lock, __FILE__, __LINE__)
#define ENETunlock(lock) IntENET_unlock(lock, __FILE__, __LINE__)
#define gettid() pthread_self()
static void
IntENET_lock(enet_client_data_ptr ecd, char *file, int line)
{
// if (file) printf("(PID %lx, TID %lx) Trying ENET Lock at %s, line %d\n", (long) getpid(), (long)gettid(), file, line);
thr_mutex_lock(ecd->enet_lock);
// if (file) printf("GOT ENET Lock at %s, line %d\n", file, line);
ecd->enet_locked++;
}
static void
IntENET_unlock(enet_client_data_ptr ecd, char *file, int line)
{
// if (file) printf("(PID %lx, TID %lx) ENET Unlock at %s, line %d\n", (long) getpid(), (long)gettid(), file, line);
ecd->enet_locked--;
thr_mutex_unlock(ecd->enet_lock);
}
static int
check_host(char *hostname, void *sin_addr)
{
(void)hostname; (void)sin_addr;
#ifdef HAS_STRUCT_HOSTEN
struct hostent *host_addr;
host_addr = gethostbyname(hostname);
if (host_addr == NULL) {
struct in_addr addr;
if (inet_aton(hostname, &addr) == 0) {
/*
* not translatable as a hostname or
* as a dot-style string IP address
*/
return 0;
}
assert(sizeof(int) == sizeof(struct in_addr));
*((int *) sin_addr) = *((int*) &addr);
} else {
memcpy(sin_addr, host_addr->h_addr, host_addr->h_length);
}
return 1;
#endif
printf("Check host called, unimplemented\n");
return 0;
}
static enet_conn_data_ptr
create_enet_conn_data(CMtrans_services svc)
{
enet_conn_data_ptr enet_conn_data = (enet_conn_data_ptr) svc->malloc_func(sizeof(struct enet_connection_data));
enet_conn_data->remote_host = NULL;
enet_conn_data->remote_contact_port = -1;
enet_conn_data->read_buffer = NULL;
enet_conn_data->read_buffer_len = 1;
return enet_conn_data;
}
static void *
enet_accept_conn(enet_client_data_ptr ecd, transport_entry trans,
ENetAddress *address);
static void free_func(void *packet)
{
/* Clean up the packet now that we're done using it. */
// ENETlock(enet_data);
enet_packet_destroy ((ENetPacket*)packet);
// ENETunlock(enet_data);
}
static void
handle_packet(CManager cm, CMtrans_services svc, transport_entry trans, enet_conn_data_ptr econn_d, ENetPacket *packet)
{
CMbuffer cb;
svc->trace_out(cm, "A packet of length %u was received.\n",
(unsigned int) packet->dataLength);
econn_d->read_buffer_len = (int) packet->dataLength;
cb = svc->create_data_and_link_buffer(cm,
packet->data,
econn_d->read_buffer_len);
econn_d->read_buffer = cb;
cb->return_callback = free_func;
cb->return_callback_data = packet;
econn_d->packet = packet;
/* kick this upstairs */
trans->data_available(trans, econn_d->conn);
svc->return_data_buffer(trans->cm, cb);
}
static
void
enet_service_network(CManager cm, void *void_trans)
{
transport_entry trans = (transport_entry) void_trans;
enet_client_data_ptr ecd = (enet_client_data_ptr) trans->trans_data;
CMtrans_services svc = ecd->svc;
ENetEvent event;
if (!ecd->server) return;
if (!(CM_LOCKED(svc, ecd->cm))) {
printf("Enet service network, CManager not locked\n");
}
while (ecd->pending_data) {
svc->trace_out(cm, "ENET Handling pending data\n");
queued_data entry = ecd->pending_data;
ecd->pending_data = entry->next;
handle_packet(cm, svc, trans, (enet_conn_data_ptr) entry->econn_d, entry->packet);
free(entry);
}
while (ecd->server) {
IntENET_lock(ecd, NULL, 0);
int ret = enet_host_service (ecd->server, & event, 0);
if (enet_host_service_warn_interval &&
(enet_time_get() > (ecd->last_host_service_zero_return + enet_host_service_warn_interval))) {
fprintf(stderr, "WARNING, time between zero return for enet_host_service = %d msecs\n",
enet_time_get() - ecd->last_host_service_zero_return);
}
IntENET_unlock(ecd, NULL, 0);
if (ret <= 0) {
break;
}
switch (event.type) {
case ENET_EVENT_TYPE_NONE:
break;
case ENET_EVENT_TYPE_CONNECT: {
enet_conn_data_ptr enet_connection_data = NULL;
if (event.peer->data) {
enet_conn_data_ptr last = NULL;
enet_connection_data = ecd->pending_connections;
while (enet_connection_data) {
if (enet_connection_data->peer == event.peer) {
if (last) {
last->next_pending = enet_connection_data->next_pending;
} else {
ecd->pending_connections = enet_connection_data->next_pending;
}
enet_connection_data->next_pending = NULL;
break;
}
enet_connection_data = enet_connection_data->next_pending;
}
}
if (enet_connection_data) {
svc->condition_signal(cm, enet_connection_data->connect_condition);
break;
}
#ifndef USE_IPV6
struct in_addr addr;
addr.s_addr = event.peer->address.host;
svc->trace_out(cm, "A new client connected from %s:%u.\n",
inet_ntoa(addr),
event.peer->address.port);
#else
char straddr[INET6_ADDRSTRLEN];
inet_ntop(AF_INET6, &event.peer->address.host, straddr,
sizeof(straddr));
svc->trace_out(cm, "A new client connected from %s:%u.\n",
&straddr[0],
event.peer->address.port);
struct in_addr addr;
if (ntohl(((enet_uint32 *)&event.peer->address.host.s6_addr)[3]) == 0xffff) {;
addr.s_addr = ((enet_uint32 *)&event.peer->address.host.s6_addr)[3];
svc->trace_out(cm, "That was IPV4 address %s\n", inet_ntoa(addr));
}
#endif
enet_connection_data = enet_accept_conn(ecd, trans, &event.peer->address);
/* Store any relevant client information here. */
svc->trace_out(cm, "ENET ======== Assigning peer %p has data %p\n", event.peer, enet_connection_data);
enet_peer_timeout(event.peer, 0, 0, 200);
event.peer->data = enet_connection_data;
((enet_conn_data_ptr)enet_connection_data)->peer = event.peer;
break;
}
case ENET_EVENT_TYPE_RECEIVE: {
enet_conn_data_ptr econn_d = (enet_conn_data_ptr) event.peer->data;
if (econn_d) {
handle_packet(cm, svc, trans, econn_d, event.packet);
} else {
#ifndef USE_IPV6
struct in_addr addr;
addr.s_addr = event.peer->address.host;
svc->trace_out(cm, "ENET ====== virgin peer, address is %s, port %u.\n", inet_ntoa(addr), event.peer->address.port);
#else
char straddr[INET6_ADDRSTRLEN];
inet_ntop(AF_INET6, &event.peer->address.host, straddr,
sizeof(straddr));
svc->trace_out(cm, "ENET ====== virgin peer, address is %s, port %u.\n",
&straddr[0],
event.peer->address.port);
#endif
svc->trace_out(cm, "ENET ====== DISCARDING DATA\n");
}
break;
}
#ifdef USE_ZPL_ENET
case ENET_EVENT_TYPE_DISCONNECT_TIMEOUT:
#endif
case ENET_EVENT_TYPE_DISCONNECT: {
enet_conn_data_ptr enet_conn_data = (enet_conn_data_ptr) event.peer->data;
svc->trace_out(cm, "Got a disconnect on connection %p\n", event.peer->data);
enet_conn_data = (enet_conn_data_ptr) event.peer->data;
enet_conn_data->read_buffer_len = -1;
if (enet_conn_data->conn) {
svc->connection_fail(enet_conn_data->conn);
}
break;
}
default:
printf("UNKNOWN EVENT TYPE! %d\n", event.type);
break;
}
}
ecd->last_host_service_zero_return = enet_time_get();
}
static
void
enet_service_network_lock(CManager cm, void *void_trans)
{
transport_entry trans = (transport_entry) void_trans;
enet_client_data_ptr ecd = (enet_client_data_ptr) trans->trans_data;
CMtrans_services svc = ecd->svc;
ACQUIRE_CM_LOCK(svc, cm);
enet_service_network(cm, void_trans);
DROP_CM_LOCK(svc, cm);
}
static
void
read_wake_fd_and_service(CManager cm, void *void_trans)
{
transport_entry trans = (transport_entry) void_trans;
enet_client_data_ptr ecd = (enet_client_data_ptr) trans->trans_data;
char buffer;
int fd = ecd->wake_read_fd;
#ifdef HAVE_WINDOWS_H
recv(fd, &buffer, 1, 0);
#else
if (read(fd, &buffer, 1) != 1) {
perror("wake read failed\n");
}
#endif
enet_service_network(cm, void_trans);
}
#ifdef NOTDEF
static
void
dump_sockaddr(who, sa)
char *who;
struct sockaddr_in *sa;
{
unsigned char *addr;
addr = (unsigned char *) &(sa->sin_addr.s_addr);
printf("%s: family=%d port=%d addr=%d.%d.%d.%d\n",
who,
ntohs(sa->sin_family),
ntohs(sa->sin_port),
addr[0], addr[1], addr[2], addr[3]);
}
static
void
dump_sockinfo(msg, fd)
char *msg;
int fd;
{
int nl;
struct sockaddr_in peer, me;
printf("Dumping sockinfo for fd=%d: %s\n", fd, msg);
nl = sizeof(me);
getsockname(fd, (struct sockaddr *) &me, &nl);
dump_sockaddr("Me", &me);
nl = sizeof(peer);
getpeername(fd, (struct sockaddr *) &peer, &nl);
dump_sockaddr("Peer", &peer);
}
#endif
static int conn_reuse = 1;
/*
* Accept enet connection
*/
static void *
enet_accept_conn(enet_client_data_ptr ecd, transport_entry trans,
ENetAddress *address)
{
CMtrans_services svc = ecd->svc;
enet_conn_data_ptr enet_conn_data;
CMConnection conn;
attr_list conn_attr_list = NULL;;
enet_conn_data = create_enet_conn_data(svc);
enet_conn_data->ecd = ecd;
conn_attr_list = create_attr_list();
conn = svc->connection_create(trans, enet_conn_data, conn_attr_list);
enet_conn_data->conn = conn;
#ifndef USE_IPV6
add_int_attr(conn_attr_list, CM_PEER_IP, ntohl(address->host));
enet_conn_data->remote_IP = ntohl(address->host);
#else
enet_conn_data->remote_IP = address->host;
enet_conn_data->remote_IPv4 = ntohl(((enet_uint32 *)&address->host.s6_addr)[3]);
add_int_attr(conn_attr_list, CM_PEER_IP, enet_conn_data->remote_IPv4); /* remote_IPv4 is in host byte order */
#endif
if (!conn_reuse) {
enet_conn_data->remote_contact_port = -1;
} else {
enet_conn_data->remote_contact_port = address->port;
}
if (enet_conn_data->remote_host != NULL) {
svc->trace_out(trans->cm, "Accepted ENET RUDP connection from host \"%s\"",
enet_conn_data->remote_host);
} else {
svc->trace_out(trans->cm, "Accepted ENET RUDP connection from UNKNOWN host");
}
add_attr(conn_attr_list, CM_PEER_LISTEN_PORT, Attr_Int4,
(attr_value) (intptr_t)enet_conn_data->remote_contact_port);
#ifndef USE_IPV6
struct in_addr addr;
addr.s_addr = htonl(enet_conn_data->remote_IP);
svc->trace_out(trans->cm, "Remote host (IP %s) is listening at port %d\n",
inet_ntoa(addr),
enet_conn_data->remote_contact_port);
#else
char straddr[INET6_ADDRSTRLEN];
inet_ntop(AF_INET6, &enet_conn_data->remote_IP, straddr,
sizeof(straddr));
svc->trace_out(trans->cm, "Remote host (IP %s) is listening at port %d\n",
&straddr[0],
enet_conn_data->remote_contact_port);
#endif
free_attr_list(conn_attr_list);
return enet_conn_data;
}
#ifdef __cplusplus
extern "C"
#else
extern
#endif
void
INTERFACE_NAME(shutdown_conn)(CMtrans_services svc, enet_conn_data_ptr scd)
{
svc->connection_deref(scd->conn);
if (scd->remote_host) free(scd->remote_host);
free(scd);
}
static void *
enet_initiate_conn(CManager cm, CMtrans_services svc, transport_entry trans,
attr_list attrs, enet_conn_data_ptr enet_conn_data,
attr_list conn_attr_list)
{
int int_port_num;
enet_client_data_ptr ecd = (enet_client_data_ptr) trans->trans_data;
char *host_name;
int host_ip = 0;
#ifdef USE_IPV6
struct in6_addr host_ipv6;
#endif
struct in_addr sin_addr;
(void)conn_attr_list;
int timeout = 200; /* connection time out default 100 milliseconds */
if (!(CM_LOCKED(svc, ecd->cm))) {
printf("Enet service network, CManager not locked in enet_initiate_conn\n");
}
if (!query_attr(attrs, CM_ENET_HOSTNAME, /* type pointer */ NULL,
/* value pointer */ (attr_value *)(intptr_t) & host_name)) {
svc->trace_out(cm, TPORT " transport found no CM_ENET_HOSTNAME attribute");
host_name = NULL;
} else {
svc->trace_out(cm, TPORT " transport connect to host %s", host_name);
}
if (!query_attr(attrs, CM_ENET_ADDR, /* type pointer */ NULL,
/* value pointer */ (attr_value *)(intptr_t) & host_ip)) {
svc->trace_out(cm, "CMEnet transport found no CM_ENET_ADDR attribute");
/* wasn't there */
host_ip = 0;
} else {
svc->trace_out(cm, "CMEnet transport connect to host_IP %lx", host_ip);
}
/* HOST_IP is in HOST BYTE ORDER */
if ((host_name == NULL) && (host_ip == 0)) {
printf("No host no IP\n");
return 0;
}
if (!query_attr(attrs, CM_ENET_PORT, /* type pointer */ NULL,
/* value pointer */ (attr_value *)(intptr_t) & int_port_num)) {
svc->trace_out(cm, "CMEnet transport found no CM_ENET_PORT attribute");
return 0;
} else {
svc->trace_out(cm, "CMEnet transport connect to port %d", int_port_num);
}
if (!query_attr(attrs, CM_ENET_CONN_TIMEOUT, /* type pointer */ NULL,
/* value pointer */ (attr_value *)(intptr_t) & timeout)) {
svc->trace_out(cm, "CMEnet transport found no CM_ENET_CONN_TIMEOUT attribute");
} else {
svc->trace_out(cm, "CMEnet transport connection timeout set to %d msecs", timeout);
}
if (!query_attr(attrs, CM_ENET_CONN_REUSE, /* type pointer */ NULL,
/* value pointer */ (attr_value *)(intptr_t) & conn_reuse)) {
svc->trace_out(cm, "CMEnet transport found no CM_ENET_CONN_REUSE attribute");
} else {
svc->trace_out(cm, "CMEnet transport connection reuse set to %d", conn_reuse);
}
/* ENET connection, host_name is the machine name */
ENetAddress address;
ENetPeer *peer;
sin_addr.s_addr = htonl(host_ip);
if (host_name) {
enet_address_set_host (& address, host_name);
#ifndef USE_IPV6
sin_addr.s_addr = address.host;
svc->trace_out(cm, "Attempting ENET RUDP connection, USING host=\"%s\", IP = %s, port %d",
host_name == 0 ? "(unknown)" : host_name,
inet_ntoa(sin_addr),
int_port_num);
#else
char straddr[INET6_ADDRSTRLEN];
inet_ntop(AF_INET6, &address.host, straddr,
sizeof(straddr));
svc->trace_out(cm, "Attempting ENET RUDP connection, USING host=\"%s\", IP = %s, port %d",
host_name == 0 ? "(unknown)" : host_name,
&straddr[0],
int_port_num);
#endif
} else {
#ifndef USE_IPV6
address.host = ntohl(host_ip);
svc->trace_out(cm, "Attempting ENET RUDP connection, USING IP = %s, port %d",
inet_ntoa(sin_addr),
int_port_num);
#else
char straddr[INET6_ADDRSTRLEN];
*((enet_uint32 *)&host_ipv6.s6_addr) = 0;
*(((enet_uint32 *)&host_ipv6.s6_addr) + 1) = 0;
*(((enet_uint32 *)&host_ipv6.s6_addr) + 2) = htonl(0xffff);
*(((enet_uint32 *)&host_ipv6.s6_addr) + 3) = htonl(host_ip);
inet_ntop(AF_INET6, &host_ipv6, straddr,
sizeof(straddr));
svc->trace_out(cm, "Attempting ENET RUDP connection, USING host=\"%s\", IP = %s, port %d",
host_name == 0 ? "(unknown)" : host_name,
&straddr[0],
int_port_num);
sin_addr.s_addr = htonl(host_ip);
svc->trace_out(cm, "Attempting ENET RUDP connection, USING IPv4 = %s\n",
inet_ntoa(sin_addr));
memcpy(&address.host, &host_ipv6, sizeof(struct in6_addr));
#endif
}
address.port = (unsigned short) int_port_num;
if (ecd->server == NULL) {
attr_list l = INTERFACE_NAME(non_blocking_listen)(cm, svc, trans, NULL);
if (l) free_attr_list(l);
}
/* Initiate the connection, allocating the two channels 0 and 1. */
ENETlock(ecd);
peer = enet_host_connect (ecd->server, & address, 1, 0);
if (peer == NULL)
{
fprintf (stderr,
"No available peers for initiating an ENet connection, count at initiation was %d.\n", MAX_CLIENTS);
exit (EXIT_FAILURE);
}
enet_peer_timeout(peer, 0, 0, 200);
ENETunlock(ecd);
peer->data = enet_conn_data;
enet_conn_data->remote_host = host_name == NULL ? NULL : strdup(host_name);
#ifndef USE_IPV6
enet_conn_data->remote_IP = htonl(host_ip);
#else
memcpy(&enet_conn_data->remote_IP, &host_ipv6, sizeof(enet_conn_data->remote_IP));
enet_conn_data->remote_IPv4 = htonl(((enet_uint32 *)&host_ipv6.s6_addr)[3]);
#endif
enet_conn_data->remote_contact_port = int_port_num;
enet_conn_data->ecd = ecd;
enet_conn_data->peer = peer;
peer->data = enet_conn_data;
svc->trace_out(cm, "ENET ======== On init Assigning peer %p has data %p moving to wait phase\n", peer, enet_conn_data);
return enet_conn_data;
}
/*
* Initiate a ENET RUDP connection with another CM.
*/
#ifdef __cplusplus
extern "C"
#else
extern
#endif
void *
INTERFACE_NAME(initiate_conn_nonblocking)(CManager cm, CMtrans_services svc,
transport_entry trans, attr_list attrs, int connect_condition)
{
enet_conn_data_ptr enet_conn_data = create_enet_conn_data(svc);
attr_list conn_attr_list = create_attr_list();
enet_conn_data_ptr ret;
enet_conn_data->conn_attr_list = conn_attr_list;
enet_conn_data->connect_condition = connect_condition;
ret = enet_initiate_conn(cm, svc, trans, attrs, enet_conn_data, conn_attr_list);
if (ret) {
enet_client_data_ptr ecd = (enet_client_data_ptr) trans->trans_data;
ret->next_pending = ecd->pending_connections;
ecd->pending_connections = ret;
}
return (void*)ret;
}
/*
* Initiate a ENET RUDP connection with another CM.
*/
#ifdef __cplusplus
extern "C"
#else
extern
#endif
CMConnection
INTERFACE_NAME(finalize_conn_nonblocking)(CManager cm, CMtrans_services svc,
transport_entry trans, void *client_data, int result)
{
enet_client_data_ptr ecd = (enet_client_data_ptr) trans->trans_data;
enet_conn_data_ptr final_conn_data = (enet_conn_data_ptr) client_data;
enet_conn_data_ptr last = NULL, enet_conn_data = ecd->pending_connections;
CMConnection conn;
attr_list conn_attr_list = final_conn_data->conn_attr_list;
if (!result) {
while (enet_conn_data) {
if (enet_conn_data == final_conn_data) {
if (last) {
last->next_pending = enet_conn_data->next_pending;
} else {
ecd->pending_connections = enet_conn_data->next_pending;
}
enet_conn_data->next_pending = NULL;
break;
}
last = enet_conn_data;
enet_conn_data = enet_conn_data->next_pending;
}
free_attr_list(conn_attr_list);
free(enet_conn_data);
return NULL;
}
add_attr(conn_attr_list, CM_PEER_LISTEN_PORT, Attr_Int4,
(attr_value) (intptr_t)final_conn_data->remote_contact_port);
conn = svc->connection_create(trans, final_conn_data, conn_attr_list);
final_conn_data->conn = conn;
free_attr_list(conn_attr_list);
final_conn_data->conn_attr_list = NULL;
svc->connection_addref(conn); /* one ref count went to CM,
the other to the user */
return conn;
}
/*
* Check to see that if we were to attempt to initiate a connection as
* indicated by the attribute list, would we be connecting to ourselves?
* For enet, this involves checking to see if the host name is the
* same as ours and if the CM_ENET_PORT matches the one we are listening on.
*/
#ifdef __cplusplus
extern "C"
#else
extern
#endif
int
INTERFACE_NAME(self_check)(CManager cm, CMtrans_services svc,
transport_entry trans, attr_list attrs)
{
enet_client_data_ptr ecd = (enet_client_data_ptr) trans->trans_data;
int host_addr;
int int_port_num;
char *host_name;
char my_host_name[256];
static int IP = 0; /* always in host byte order */
get_IP_config(my_host_name, sizeof(host_name), &IP, NULL, NULL, NULL,
NULL, svc->trace_out, (void *)cm);
if (IP == 0) {
IP = ntohl(INADDR_LOOPBACK);
}
if (!query_attr(attrs, CM_ENET_HOSTNAME, /* type pointer */ NULL,
/* value pointer */ (attr_value *)(intptr_t) & host_name)) {
svc->trace_out(cm, "CMself check CMEnet transport found no CM_ENET_HOSTNAME attribute");
host_name = NULL;
}
if (!query_attr(attrs, CM_ENET_ADDR, /* type pointer */ NULL,
/* value pointer */ (attr_value *)(intptr_t) & host_addr)) {
svc->trace_out(cm, "CMself check CMEnet transport found no CM_ENET_ADDR attribute");
if (host_name == NULL) return 0;
host_addr = 0;
}
if (!query_attr(attrs, CM_ENET_PORT, /* type pointer */ NULL,
/* value pointer */ (attr_value *)(intptr_t) & int_port_num)) {
svc->trace_out(cm, "CMself check CMEnet transport found no CM_ENET_PORT attribute");
return 0;
}
//get_qual_hostname(my_host_name, sizeof(my_host_name), svc, NULL, NULL);
if (host_name && (strcmp(host_name, my_host_name) != 0)) {
svc->trace_out(cm, "CMself check - Hostnames don't match");
return 0;
}
if (host_addr && (IP != host_addr)) {
svc->trace_out(cm, "CMself check - Host IP addrs don't match, %lx, %lx", IP, host_addr);
return 0;
}
if (int_port_num != ecd->listen_port) {
svc->trace_out(cm, "CMself check - Ports don't match, %d, %d", int_port_num, ecd->listen_port);
return 0;
}
svc->trace_out(cm, "CMself check returning TRUE");
return 1;
}
#ifdef __cplusplus
extern "C"
#else
extern
#endif
int
INTERFACE_NAME(connection_eq)(CManager cm, CMtrans_services svc,
transport_entry trans, attr_list attrs,
enet_conn_data_ptr ecd)
{
int int_port_num;
int requested_IP = -1;
char *host_name = NULL;
(void) trans;
if (!query_attr(attrs, CM_ENET_HOSTNAME, /* type pointer */ NULL,
/* value pointer */ (attr_value *)(intptr_t) & host_name)) {
svc->trace_out(cm, "CMEnet transport found no CM_ENET_HOST attribute");
}
if (!query_attr(attrs, CM_ENET_PORT, /* type pointer */ NULL,
/* value pointer */ (attr_value *)(intptr_t) & int_port_num)) {
svc->trace_out(cm, "Conn Eq CMenet transport found no CM_ENET_PORT attribute");
return 0;
}
if (!query_attr(attrs, CM_ENET_ADDR, /* type pointer */ NULL,
/* value pointer */ (attr_value *)(intptr_t) & requested_IP)) {
svc->trace_out(cm, "CMENET transport found no CM_ENET_ADDR attribute");
}
if (requested_IP == -1) {
check_host(host_name, (void *) &requested_IP);
requested_IP = ntohl(requested_IP);
struct in_addr addr;
addr.s_addr = htonl(requested_IP);
svc->trace_out(cm, "IP translation for hostname %s is %s", host_name,
inet_ntoa(addr));
}
/* requested IP is in host byte order */
if (ecd->peer->state != ENET_PEER_STATE_CONNECTED) {
svc->trace_out(cm, "ENET Conn_eq returning FALSE, peer not connected");
return 0;
}
struct in_addr addr1, addr2;
#ifdef USE_IPV6
addr1.s_addr = htonl(ecd->remote_IPv4);
#else
addr1.s_addr = htonl(ecd->remote_IP);
#endif
addr2.s_addr = htonl(requested_IP);
svc->trace_out(cm, "ENET Conn_eq comparing IP/ports %s/%d and %s/%d",
inet_ntoa(addr1), ecd->remote_contact_port,
inet_ntoa(addr2), int_port_num);
#ifdef USE_IPV6
if ((ecd->remote_IPv4 == requested_IP) && /* both in host byte order */
#else
if ((ecd->remote_IP == requested_IP) && /* both in host byte order */
#endif
(ecd->remote_contact_port == int_port_num)) {
svc->trace_out(cm, "ENET Conn_eq returning TRUE");
return 1;
}
svc->trace_out(cm, "ENET Conn_eq returning FALSE");
return 0;