void R_FTPClose(void *ctx)
{
if(!initialized) internet_Init();
if(initialized > 0)
(*ptr->FTPClose)(ctx);
else
error(_("internet routines cannot be loaded"));
}
void extR_HTTPDStop(void)
{
if(!initialized) internet_Init();
if(initialized > 0)
(*ptr->HTTPDStop)();
else
error(_("internet routines cannot be loaded"));
}
int extR_HTTPDCreate(const char *ip, int port)
{
if(!initialized) internet_Init();
if(initialized > 0)
return (*ptr->HTTPDCreate)(ip, port);
else
error(_("internet routines cannot be loaded"));
return -1;
}
SEXP Rdownload(SEXP args)
{
if(!initialized) internet_Init();
if(initialized > 0)
return (*ptr->download)(args);
else {
error(_("internet routines cannot be loaded"));
return R_NilValue;
}
}
int R_FTPRead(void *ctx, char *dest, int len)
{
if(!initialized) internet_Init();
if(initialized > 0)
return (*ptr->FTPRead)(ctx, dest, len);
else {
error(_("internet routines cannot be loaded"));
return 0;
}
}
void *R_HTTPOpen(const char *url)
{
if(!initialized) internet_Init();
if(initialized > 0)
return (*ptr->HTTPOpen)(url, NULL, 0);
else {
error(_("internet routines cannot be loaded"));
return NULL;
}
}
void *R_FTPOpen(const char *url)
{
if(!initialized) internet_Init();
if(initialized > 0)
return (*ptr->FTPOpen)(url);
else {
error(_("internet routines cannot be loaded"));
return nullptr;
}
}
SEXP attribute_hidden do_curlDownload(SEXP call, SEXP op, SEXP args, SEXP rho)
{
checkArity(op, args);
if(!initialized) internet_Init();
if(initialized > 0)
return (*ptr->curlDownload)(call, op, args, rho);
else {
error(_("internet routines cannot be loaded"));
return R_NilValue;
}
}
SEXP Rsockopen(SEXP sport)
{
if (length(sport) != 1) error("invalid 'port' argument");
int port = asInteger(sport);
if(!initialized) internet_Init();
if(initialized > 0)
(*ptr->sockopen)(&port);
else
error(_("socket routines cannot be loaded"));
return ScalarInteger(port); // The socket number
}
SEXP Rsockclose(SEXP ssock)
{
if (length(ssock) != 1) error("invalid 'socket' argument");
int sock = asInteger(ssock);
if(!initialized) internet_Init();
if(initialized > 0)
(*ptr->sockclose)(&sock);
else
error(_("socket routines cannot be loaded"));
return ScalarLogical(sock);
}
Rconnection attribute_hidden
R_newurl(const char *description, const char * const mode, int type)
{
if(!initialized) internet_Init();
if(initialized > 0)
return (*ptr->newurl)(description, mode, type);
else {
error(_("internet routines cannot be loaded"));
return RHO_NO_CAST(Rconnection)nullptr;
}
}
Rconnection attribute_hidden
R_newCurlUrl(const char *description, const char * const mode, int type)
{
if(!initialized) internet_Init();
if(initialized > 0)
return (*ptr->newcurlurl)(description, mode, type);
else {
error(_("internet routines cannot be loaded"));
return (Rconnection)0;
}
return (Rconnection)0; /* -Wall */
}
attribute_hidden
int Rsockselect(int nsock, int *insockfd, int *ready, int *write,
double timeout)
{
if(!initialized) internet_Init();
if(initialized > 0)
return (*ptr->sockselect)(nsock, insockfd, ready, write, timeout);
else {
error(_("socket routines cannot be loaded"));
return 0;
}
}
Rconnection attribute_hidden
R_newsock(const char *host, int port, int server, const char * const mode,
int timeout)
{
if(!initialized) internet_Init();
if(initialized > 0)
return (*ptr->newsock)(host, port, server, mode, timeout);
else {
error(_("internet routines cannot be loaded"));
return RHO_NO_CAST(Rconnection)nullptr;
}
}
SEXP Rsockread(SEXP ssock, SEXP smaxlen)
{
if (length(ssock) != 1) error("invalid 'socket' argument");
int sock = asInteger(ssock), maxlen = asInteger(smaxlen);
char buf[maxlen+1], *abuf[1];
abuf[0] = buf;
if(!initialized) internet_Init();
if(initialized > 0)
(*ptr->sockread)(&sock, abuf, &maxlen);
else
error(_("socket routines cannot be loaded"));
return Rf_ScalarString(mkCharLen(buf, maxlen));
}
SEXP Rsockconnect(SEXP sport, SEXP shost)
{
if (length(sport) != 1) error("invalid 'socket' argument");
int port = asInteger(sport);
char *host[1];
host[0] = const_cast<char *>( translateChar(STRING_ELT(shost, 0)));
if(!initialized) internet_Init();
if(initialized > 0)
(*ptr->sockconnect)(&port, host);
else
error(_("socket routines cannot be loaded"));
return ScalarInteger(port); // The socket number
}
SEXP Rsockwrite(SEXP ssock, SEXP sstring)
{
if (length(ssock) != 1) error("invalid 'socket' argument");
int sock = asInteger(ssock), start = 0, end, len;
char *buf = const_cast<char *>( translateChar(STRING_ELT(sstring, 0))), *abuf[1];
end = len = int( strlen(buf));
abuf[0] = buf;
if(!initialized) internet_Init();
if(initialized > 0)
(*ptr->sockwrite)(&sock, abuf, &start, &end, &len);
else
error(_("socket routines cannot be loaded"));
return ScalarInteger(len);
}
SEXP Rsocklisten(SEXP ssock)
{
if (length(ssock) != 1) error("invalid 'socket' argument");
int sock = asInteger(ssock), len = 256;
char buf[257], *abuf[1];
abuf[0] = buf;
if(!initialized) internet_Init();
if(initialized > 0)
(*ptr->socklisten)(&sock, abuf, &len);
else
error(_("socket routines cannot be loaded"));
SEXP ans = PROTECT(ScalarInteger(sock)); // The socket being listened on
SEXP host = PROTECT(Rf_ScalarString(mkChar(buf)));
setAttrib(ans, install("host"), host);
UNPROTECT(2);
return ans;
}
SEXP Rsockread(SEXP ssock, SEXP smaxlen)
{
if (length(ssock) != 1) error("invalid 'socket' argument");
int sock = asInteger(ssock), maxlen = asInteger(smaxlen);
char buf[maxlen+1], *abuf[1];
abuf[0] = buf;
if(!initialized) internet_Init();
if(initialized > 0)
(*ptr->sockread)(&sock, abuf, &maxlen);
else
error(_("socket routines cannot be loaded"));
SEXP ans = PROTECT(allocVector(STRSXP, 1));
SET_STRING_ELT(ans, 0, mkCharLen(buf, maxlen));
UNPROTECT(1);
return ans;
}
