/*
* Autor: Bartosz Fr¹ckowiak
* wwww: http://www.batas2.boo.pl/
*/
int main(int argc, char *argv[])
{
int fd = -1, sd = -1;
int port = -1;
struct t_call *call;
if(argc != 2){
printf("Sposob uruchomienia: %s <port>\n", argv[0]);
exit(1);
}else{
port = atoi(argv[1]);
}
fd = local_work(port, &call);
while (1) {
if (t_listen(fd, call) < 0)
error("serwer->t_listen", fd);
if ((sd = accept_client(fd, call)) != -1)
serwer_work(sd);
}
if (t_close(fd) < 0)
error("serwer->t_close", fd, sd);
if (t_close(sd) < 0)
error("serwer->serwer_wrok->t_close", fd, sd);
}
enum proto_accept_error
proto_accept_connection(int listener_fd, int *read_fd, int *write_fd,
const char **name)
{
int timeout = server_int_option("name_lookup_timeout", 5);
int fd;
struct sockaddr_in *addr = (struct sockaddr_in *) call->addr.buf;
static Stream *s = 0;
if (!s)
s = new_stream(100);
fd = t_open((void *) "/dev/tcp", O_RDWR, 0);
if (fd < 0) {
if (t_errno == TSYSERR && errno == EMFILE)
return PA_FULL;
else {
log_ti_error("Opening endpoint for new connection");
return PA_OTHER;
}
}
if (t_bind(fd, 0, 0) < 0) {
log_ti_error("Binding endpoint for new connection");
t_close(fd);
return PA_OTHER;
}
if (t_listen(listener_fd, call) < 0) {
log_ti_error("Accepting new network connection");
t_close(fd);
return PA_OTHER;
}
if (t_accept(listener_fd, fd, call) < 0) {
log_ti_error("Accepting new network connection");
t_close(fd);
return PA_OTHER;
}
if (!set_rw_able(fd)) {
t_close(fd);
return PA_OTHER;
}
*read_fd = *write_fd = fd;
stream_printf(s, "%s, port %d",
lookup_name_from_addr(addr, timeout),
(int) ntohs(addr->sin_port));
*name = reset_stream(s);
return PA_OKAY;
}
/*
* Takes a connection request off 'fd' in the form of a t_call structure
* and returns a pointer to it.
* Returns NULL on failure, else pointer to t_call structure on success.
*/
static struct t_call *
get_new_conind(int fd)
{
struct t_call *call;
debug_msg("Entering get_new_conind");
/* LINTED E_BAD_PTR_CAST_ALIGN */
if ((call = (struct t_call *)t_alloc(fd, T_CALL, T_ALL)) == NULL) {
error_msg("t_alloc: %s", t_strerror(t_errno));
return (NULL);
}
if (t_listen(fd, call) < 0) {
error_msg("t_listen: %s", t_strerror(t_errno));
(void) t_free((char *)call, T_CALL);
return (NULL);
}
return (call);
}
static XtransConnInfo
TRANS(TLIAccept)(XtransConnInfo ciptr, int *status)
{
struct t_call *call;
XtransConnInfo newciptr;
int i;
prmsg(2,"TLIAccept(%x->%d)\n", ciptr, ciptr->fd);
if( (call=(struct t_call *)t_alloc(ciptr->fd,T_CALL,T_ALL)) == NULL )
{
prmsg(1, "TLIAccept() failed to allocate a t_call\n");
*status = TRANS_ACCEPT_BAD_MALLOC;
return NULL;
}
if( t_listen(ciptr->fd,call) < 0 )
{
extern char *t_errlist[];
extern int t_errno;
prmsg(1, "TLIAccept() t_listen() failed\n");
prmsg(1, "TLIAccept: %s\n", t_errlist[t_errno]);
t_free((char *)call,T_CALL);
*status = TRANS_ACCEPT_MISC_ERROR;
return NULL;
}
/*
* Now we need to set up the new endpoint for the incoming connection.
*/
i=ciptr->index; /* Makes the next line more readable */
if( (newciptr=TRANS(TLIOpen)(TLItrans2devtab[i].devcotsname)) == NULL )
{
prmsg(1, "TLIAccept() failed to open a new endpoint\n");
t_free((char *)call,T_CALL);
*status = TRANS_ACCEPT_MISC_ERROR;
return NULL;
}
if( TRANS(TLITLIBindLocal)(newciptr->fd,TLItrans2devtab[i].family,"") < 0 )
{
prmsg(1,
"TLIAccept: TRANS(TLITLIBindLocal)() failed: %d\n",
errno);
t_free((char *)call,T_CALL);
t_close(newciptr->fd);
free(newciptr);
*status = TRANS_ACCEPT_MISC_ERROR;
return NULL;
}
if( t_accept(ciptr->fd,newciptr->fd,call) < 0 )
{
extern char *t_errlist[];
extern int t_errno;
prmsg(1, "TLIAccept() t_accept() failed\n");
prmsg(1, "TLIAccept: %s\n", t_errlist[t_errno]);
if( t_errno == TLOOK )
{
int evtype = t_look(ciptr->fd);
prmsg(1, "TLIAccept() t_look() returned %d\n", evtype);
switch( evtype )
{
case T_DISCONNECT:
if( t_rcvdis(ciptr->fd, NULL) < 0 )
{
prmsg(1, "TLIAccept() t_rcvdis() failed\n");
prmsg(1, "TLIAccept: %s\n", t_errlist[t_errno]);
}
break;
default:
break;
}
}
t_free((char *)call,T_CALL);
t_close(newciptr->fd);
free(newciptr);
*status = TRANS_ACCEPT_FAILED;
return NULL;
}
t_free((char *)call,T_CALL);
if( TRANS(TLIGetAddr)(newciptr) < 0 )
{
prmsg(1,
"TLIAccept: TRANS(TLIGetPeerAddr)() failed: %d\n",
errno);
t_close(newciptr->fd);
free(newciptr);
*status = TRANS_ACCEPT_MISC_ERROR;
return NULL;
}
if( TRANS(TLIGetPeerAddr)(newciptr) < 0 )
{
prmsg(1,
"TLIAccept: TRANS(TLIGetPeerAddr)() failed: %d\n",
errno);
t_close(newciptr->fd);
free(newciptr->addr);
free(newciptr);
*status = TRANS_ACCEPT_MISC_ERROR;
return NULL;
}
if( ioctl(newciptr->fd, I_POP,"timod") < 0 )
{
prmsg(1, "TLIAccept() ioctl(I_POP, \"timod\") failed %d\n",
errno);
t_close(newciptr->fd);
free(newciptr->addr);
free(newciptr);
*status = TRANS_ACCEPT_MISC_ERROR;
return NULL;
}
if( ioctl(newciptr->fd, I_PUSH,"tirdwr") < 0 )
{
prmsg(1, "TLIAccept() ioctl(I_PUSH,\"tirdwr\") failed %d\n",
errno);
t_close(newciptr->fd);
free(newciptr->addr);
free(newciptr);
*status = TRANS_ACCEPT_MISC_ERROR;
return NULL;
}
*status = 0;
return newciptr;
}
int main(int argc, char **argv) {
int opt;
char *dir = NULL;
char *puerto = NULL;
int iPuerto = 0;
int flagServidor=0;
int resultado_primitiva;
t_direccion tsap_destino, tsap_origen;
memset(&tsap_origen, 0, sizeof (tsap_origen));
memset(&tsap_destino, 0, sizeof (tsap_destino));
while ((opt = getopt(argc, argv, "scp:r:")) != -1) {
switch (opt) {
case 's':
fprintf(stderr,"\naplicacion servidor\n");
flagServidor = 1;
break;
case 'c':
fprintf(stderr,"\naplicacion cliente\n");
flagServidor = 0;
break;
case 'p':
puerto = optarg;
iPuerto = atoi(puerto);
fprintf(stderr,"\nEl puerto es: %d\n", iPuerto);
//tsap_origen.puerto = iPuerto;
break;
case 'r':
dir = optarg;
inet_pton(AF_INET, dir, &tsap_destino.ip);
fprintf(stderr,"\nla direccion es: %s\n", dir);
break;
}
}
//miramos si la aplicacion funciona como cliente o como servidor
if(flagServidor == 0){
tsap_destino.puerto=iPuerto;
resultado_primitiva = t_connect (&tsap_destino, &tsap_origen);
}else{
tsap_origen.puerto = iPuerto;
resultado_primitiva = t_listen (&tsap_origen, &tsap_destino);
}
//resultados de la primitiva
switch(resultado_primitiva){
case 0:
fprintf(stderr,"\nPrimitiva ejecutada con exito\n");
break;
case -1:
fprintf(stderr,"\nLa conexion referida no esta en la tabla\n");
break;
case -2:
fprintf(stderr,"\nColision con una conexion ya presente en la tabla\n");
break;
case -3:
fprintf(stderr,"\nError de (sub)red.Agotado el numero de retransmisiones de un paquete\n");
break;
case -4:
fprintf(stderr,"\nError al entrar en el kernel\n");
break;
case -5:
fprintf(stderr,"\nMensaje demasiado grande\n");
break;
case -6:
fprintf(stderr,"\nNo existe el TSAP especificado\n");
break;
case -7:
fprintf(stderr,"\nDatos no disponibles\n");
break;
case -8:
fprintf(stderr,"\nFlujo de datos ya cerrado\n");
break;
case -9:
fprintf(stderr,"\nArgumento invalido\n");
break;
case -10:
fprintf(stderr,"\nNumero maximo de conexiones alcanzado\n");
break;
case -11:
fprintf(stderr,"\nError indefinido\n");
break;
case -12:
fprintf(stderr,"\nRecibida desconexion\n");
break;
}
return 0;
}
/*
****************************************************************
* Aguarda pedidos de conexão (servidor) *
****************************************************************
*/
int
tcp_listen (int fd, char *name)
{
T_CALL call;
T_BIND bind;
INADDR client_addr, addr[2];
int newfd;
char *cp;
/*
* Preenche a estrutura T_CALL: só o membro addr é relevante.
*/
FILL_NETBUF (call.addr, &client_addr, sizeof (client_addr));
FILL_NETBUF (call.opt, NULL, 0);
FILL_NETBUF (call.udata, NULL, 0);
/*
* Espera chegar um pedido de conexão.
*/
if (t_listen (fd, &call) < 0)
return (-1);
/*
* Abre outro "endpoint".
*/
if ((newfd = t_open (tcpdevname, O_RDWR, (T_INFO *)NULL)) < 0)
return (-1);
/*
* Preenche a estrutura T_BIND.
*/
if (client_addr.a_addr == LOCAL_IP_ADDR)
{ /*
* A conexão é local: deixa o kernel gerar outro port.
*/
bind.addr.len = 0;
bind.addr.buf = addr;
bind.addr.maxlen = sizeof (INADDR);
}
else
{ /*
* A conexão é remota: respeita o port do "t_listen".
*/
FILL_INADDR (addr[0], 0, listen_port);
FILL_INADDR (addr[1], client_addr.a_addr, client_addr.a_port);
FILL_NETBUF (bind.addr, addr, sizeof (addr));
}
bind.qlen = 0; /* Não vamos dar "t_listen" nesta conexão */
if (t_bind (newfd, &bind, (T_BIND *)NULL) < 0)
goto bad;
if (set_param (newfd) < 0)
goto bad;
/*
* Aceita a conexão no novo "endpoint".
*/
if (t_accept (fd, newfd, &call) < 0)
goto bad;
if
( name != NOSTR &&
(cp = t_addr_to_node (fd, client_addr.a_addr)) != NOSTR
)
strcpy (name, cp);
return (newfd);
bad: t_close (newfd);
return (-1);
} /* end tcp_listen */
HTCPCONN tcp_ipv6_server_init(unsigned short p_usPort, void * arg )
{
gFunctions = (T_PFN_functions *)arg;
SOCKTYPE sock = t_socket(AF_INET6, SOCK_STREAM, IPPROTO_TCP);
if (sock == INVALID_SOCKET)
{ C_NLOG_ERR("Iniche:tcp_ipv6_server_init: couldn't create ip6 socket");
return NULL;
}
//add sock in array
int i = 0;
int isSett = 0;
for(;i < MAX_SOCK_NO; i++)
{
if(g_sockets[i].sock == INVALID_SOCKET)
{
g_sockets[i].sock = sock;
g_sockets[i].indxToListen = -1;
isSett = 1;
break;
}
}
if(isSett == 0)
{
t_socketclose(sock);
C_NLOG_ERR("Iniche:tcp_ipv6_server_init: couldn't create ip6 socket.");
return NULL;
}
struct sockaddr_in6 tcpsin6;
int addrlen = sizeof(tcpsin6);
IP6CPY(&tcpsin6.sin6_addr, &in6addr_any);
tcpsin6.sin6_port = htons(p_usPort);
tcpsin6.sin6_family = AF_INET6;
int e = t_bind(g_sockets[i].sock, (struct sockaddr *)&tcpsin6, addrlen);
if (e != 0)
{
e = t_errno(g_sockets[i].sock);
t_socketclose(g_sockets[i].sock);
g_sockets[i].sock = INVALID_SOCKET;
C_NLOG_ERR("Iniche:tcp_ipv6_server_init: error %d binding tcp listen on port %d",e, p_usPort);
return NULL;
}
int iTmp = 1;
e = t_setsockopt(g_sockets[i].sock, SOL_SOCKET, SO_NONBLOCK, (void *)&iTmp, sizeof(iTmp));
if (e == SOCKET_ERROR)
{
e = t_errno(g_sockets[i].sock);
t_socketclose(g_sockets[i].sock);
g_sockets[i].sock = INVALID_SOCKET;
C_NLOG_ERR("Iniche:tcp_ipv6_server_init: t_setsockopt() SO_NONBLOCK failed, Err: %d", e);
return NULL;
}
e = t_listen(g_sockets[i].sock,MAX_SOCK_NO);
if (e != 0)
{
e = t_errno(g_sockets[i].sock);
t_socketclose(g_sockets[i].sock);
g_sockets[i].sock = INVALID_SOCKET;
C_NLOG_ERR("Iniche:tcp_ipv6_server_init: error %d tcp can't listen on port %d",e, p_usPort);
return NULL;
}
C_NLOG_INFO( "Iniche:tcp_ipv6_server_init: TCP server initialized successfully." );
return (HTCPCONN)(g_sockets+i);
}