static void pipe_intrin (void)
{
int fds[2];
SLFile_FD_Type *f0;
SLFile_FD_Type *f1;
while (-1 == pipe (fds))
{
if (errno == EINTR)
{
if (-1 != SLang_handle_interrupt ())
continue;
}
SLerrno_set_errno (errno);
SLang_verror (SL_OS_Error, "pipe failed: %s", SLerrno_strerror(errno));
return;
}
f0 = SLfile_create_fd ("*pipe*", fds[0]);
f1 = SLfile_create_fd ("*pipe*", fds[1]);
if ((NULL != f0) && (NULL != f1))
{
/* Ignore errors and allow the free_fd routines to clean up */
(void) SLfile_push_fd (f0);
(void) SLfile_push_fd (f1);
}
SLfile_free_fd (f1);
SLfile_free_fd (f0);
}
static void accept_intrin (void)
{
SLFile_FD_Type *f;
Socket_Type *s, *s1;
Domain_Methods_Type *methods;
int nargs = SLang_Num_Function_Args;
SLang_Ref_Type *refs[MAX_ACCEPT_REF_ARGS];
int i;
if (nargs <= 0)
{
SLang_verror (SL_Usage_Error, "s1 = accept (s [,&v...])");
return;
}
if (-1 == SLroll_stack (-nargs))
return;
if (NULL == (s = pop_socket (&f)))
return;
nargs--;
if (nargs > MAX_ACCEPT_REF_ARGS)
{
SLang_verror (SL_NumArgs_Error, "accept: too many reference args");
SLfile_free_fd (f);
}
memset ((char *)refs, 0, sizeof (refs));
i = nargs;
while (i != 0)
{
i--;
if (-1 == SLang_pop_ref (refs+i))
goto free_return;
}
methods = s->methods;
if (NULL != (s1 = (*methods->accept)(s, nargs, refs)))
(void) push_socket (s1); /* frees it upon error */
/* drop */
free_return:
for (i = 0; i < nargs; i++)
{
if (refs[i] != NULL)
SLang_free_ref (refs[i]);
}
SLfile_free_fd (f);
}
static int fdtype_datatype_deref (SLtype type)
{
SLFile_FD_Type *f;
int status;
int fd;
(void) type;
if (-1 == SLang_pop_int (&fd))
return -1;
#ifdef F_GETFL
while (-1 == fcntl (fd, F_GETFL))
{
if (is_interrupt (errno, 1))
continue;
return SLang_push_null ();
}
#endif
f = find_chained_fd (fd);
if (f != NULL)
return SLfile_push_fd (f);
/* The descriptor is valid, but we have no record of what it is. So make sure
* it is not automatically closed.
*/
if (NULL == (f = SLfile_create_fd (NULL, fd)))
return -1;
f->flags |= _SLFD_NO_AUTO_CLOSE;
status = SLfile_push_fd (f);
SLfile_free_fd (f);
return status;
}
static void posix_fileno (void)
{
FILE *fp;
SLang_MMT_Type *mmt;
int fd;
SLFile_FD_Type *f;
SLFUTURE_CONST char *name;
if (-1 == SLang_pop_fileptr (&mmt, &fp))
{
SLang_push_null ();
return;
}
name = SLang_get_name_from_fileptr (mmt);
fd = fileno (fp);
f = SLfile_create_fd (name, fd);
if (f != NULL)
{
/* prevent fd from being closed when it goes out of scope */
f->flags |= _SLFD_NO_AUTO_CLOSE;
f->close = dummy_close;
}
SLang_free_mmt (mmt);
if (-1 == SLfile_push_fd (f))
SLang_push_null ();
SLfile_free_fd (f);
}
static int posix_fileno_int (void)
{
int fd;
SLFile_FD_Type *f;
if (SLang_peek_at_stack () == SLANG_FILE_PTR_TYPE)
{
SLang_MMT_Type *mmt;
FILE *fp;
if (-1 == SLang_pop_fileptr (&mmt, &fp))
return -1;
fd = fileno (fp);
SLang_free_mmt (mmt);
return fd;
}
if (-1 == SLfile_pop_fd (&f))
return -1;
if (-1 == get_fd (f, &fd))
fd = -1;
SLfile_free_fd (f);
return fd;
}
static void posix_ttyname (void)
{
SLFile_FD_Type *f;
SLang_MMT_Type *mmt;
int fd;
char buf[512];
int e;
if (SLang_Num_Function_Args == 0)
{
fd = 0;
f = NULL;
mmt = NULL;
}
else if (-1 == pop_fd (&fd, &f, &mmt))
return;
if (0 != (e = TTYNAME_R (fd, buf, sizeof(buf))))
{
_pSLerrno_errno = e;
SLang_push_null ();
}
else
(void) SLang_push_string (buf);
if (mmt != NULL) SLang_free_mmt (mmt);
if (f != NULL) SLfile_free_fd (f);
}
static void posix_open (void)
{
char *file;
int mode, flags;
SLFile_FD_Type *f;
switch (SLang_Num_Function_Args)
{
case 3:
if (-1 == pop_string_int_int (&file, &flags, &mode))
{
SLang_push_null ();
return;
}
break;
case 2:
default:
if (-1 == pop_string_int (&file, &flags))
return;
mode = 0777;
break;
}
f = SLfile_create_fd (file, -1);
if (f == NULL)
{
SLang_free_slstring (file);
SLang_push_null ();
return;
}
SLang_free_slstring (file);
while (-1 == (f->fd = open (f->name, flags, mode)))
{
if (is_interrupt (errno, 1))
continue;
SLfile_free_fd (f);
SLang_push_null ();
return;
}
if (-1 == SLfile_push_fd (f))
SLang_push_null ();
SLfile_free_fd (f);
}
static void posix_dup (SLFile_FD_Type *f)
{
if ((NULL == (f = SLfile_dup_fd (f)))
|| (-1 == SLfile_push_fd (f)))
SLang_push_null ();
SLfile_free_fd (f);
}
static void destroy_fd_type (SLtype type, VOID_STAR ptr)
{
/* Avoid setting errno when a variable goes out of scope */
int e = _pSLerrno_errno;
(void) type;
SLfile_free_fd (*(SLFile_FD_Type **) ptr);
e = _pSLerrno_errno;
}
static int pop_fd (int *fdp)
{
SLFile_FD_Type *f;
int status;
if (SLang_peek_at_stack () == SLANG_INT_TYPE)
return SLang_pop_int (fdp);
if (-1 == SLfile_pop_fd (&f))
return -1;
status = SLfile_get_fd (f, fdp);
SLfile_free_fd (f);
return status;
}
static void bind_intrin (void)
{
Socket_Type *s;
SLFile_FD_Type *f;
int nargs = SLang_Num_Function_Args;
Domain_Methods_Type *methods;
if (-1 == SLroll_stack (-nargs))
return;
if (NULL == (s = pop_socket (&f)))
return;
nargs--;
methods = s->methods;
(void)(*methods->bind)(s, nargs);
SLfile_free_fd (f);
}
static Socket_Type *pop_socket (SLFile_FD_Type **fp)
{
SLFile_FD_Type *f;
Socket_Type *s;
if (-1 == SLfile_pop_fd (&f))
{
*fp = NULL;
return NULL;
}
if (NULL == (s = socket_from_fd (f)))
{
SLfile_free_fd (f);
return NULL;
}
*fp = f;
return s;
}
/* This function frees the socket before returning */
static int push_socket (Socket_Type *s)
{
SLFile_FD_Type *f;
int status;
if (s == NULL)
return SLang_push_null ();
if (NULL == (f = socket_to_fd (s)))
{
free_socket (s);
return -1;
}
status = SLfile_push_fd (f);
SLfile_free_fd (f);
return status;
}
static int posix_isatty (void)
{
int ret;
SLFile_FD_Type *f;
SLang_MMT_Type *mmt;
int fd;
if (-1 == pop_fd (&fd, &f, &mmt))
return 0; /* invalid descriptor */
if (0 == (ret = isatty (fd)))
_pSLerrno_errno = errno;
if (mmt != NULL) SLang_free_mmt (mmt);
if (f != NULL) SLfile_free_fd (f);
return ret;
}
static int pop_fd (int *fdp, SLFile_FD_Type **fp, SLang_MMT_Type **mmtp)
{
int fd;
*fp = NULL; *mmtp = NULL;
switch (SLang_peek_at_stack ())
{
case SLANG_FILE_PTR_TYPE:
{
SLang_MMT_Type *mmt;
FILE *p;
if (-1 == SLang_pop_fileptr (&mmt, &p))
return -1;
fd = fileno (p);
*mmtp = mmt;
}
break;
case SLANG_FILE_FD_TYPE:
{
SLFile_FD_Type *f;
if (-1 == SLfile_pop_fd (&f))
return -1;
if (-1 == get_fd (f, &fd))
{
SLfile_free_fd (f);
return -1;
}
}
break;
default:
if (-1 == SLang_pop_int (&fd))
return -1;
}
*fdp = fd;
return 0;
}
static void sl_ssl_connect (void){
int fd;
SLFile_FD_Type *slfd;
SLsslctx_Type *ctx;
SLssl_Type *slssl;
SSL *ssl;
SLang_MMT_Type *sslmmt;
SLang_MMT_Type *sslmmto;
if (SLfile_pop_fd(&slfd) == -1)
return;
if (NULL==(sslmmt=SLang_pop_mmt(SLsslctx_Type_Id)))
return;
SLfile_get_fd(slfd,&fd);
SLfile_free_fd(slfd);
ctx = (SLsslctx_Type *)SLang_object_from_mmt(sslmmt);
// create the ssl object
ssl = SSL_new((SSL_CTX *)ctx->ctx);
// set the file descriptor for input/output
if (0==SSL_set_fd(ssl,fd)){
return;
}
// fprintf(stderr,"Set client socket fd to %d\n",fd);
slssl = (SLssl_Type *)malloc(sizeof(SLssl_Type));
slssl->ssl = (void *) ssl;
slssl->is_server = ctx->is_server;
sslmmt = SLang_create_mmt(SLssl_Type_Id, (VOID_STAR) slssl);
if (0==SLang_push_mmt(sslmmt))
return;
SLang_free_mmt(sslmmt);
}
/* Usage: get/setsockopt (socket, level, optname, value) */
static void getset_sockopt (int set)
{
Socket_Type *s;
SLFile_FD_Type *f;
int level, optname;
SockOpt_Type *table;
if (-1 == SLreverse_stack (SLang_Num_Function_Args))
return;
if (NULL == (s = pop_socket (&f)))
return;
if ((-1 == SLang_pop_int (&level))
|| (-1 == SLang_pop_int (&optname)))
{
SLfile_free_fd (f);
return;
}
switch (level)
{
#ifdef SOL_SOCKET
case SOL_SOCKET: table = SO_Option_Table; break;
#endif
#ifdef SOL_IP
case SOL_IP: table = IP_Option_Table; break;
#endif
default:
SLang_verror (SL_NotImplemented_Error, "get/setsockopt level %d is not supported", level);
goto free_return;
}
while (1)
{
if (table->optname == optname)
{
int (*func)(Socket_Type *, int, int);
if (set)
func = table->setopt;
else
func = table->getopt;
if (func == NULL)
goto not_implemented_error;
(void)(*func)(s, level, optname);
break;
}
if (table->optname == -1)
goto free_return;
table++;
}
/* drop */
free_return:
SLfile_free_fd (f);
return;
not_implemented_error:
SLang_verror (SL_NotImplemented_Error, "get/setsockopt option %d is not supported at level %d", optname, level);
SLfile_free_fd (f);
}