/** main worker routine for all data reading. Returns 0 on success, -1 on error */
static int getdat(idc_handle_t fh, int ifsn, int nos, int** value, int dims_array[], int* ndims, int do_alloc)
{
(void) isisds_type_size; // Avoid compiler warning
(void) isisds_type_name; // Avoid compiler warning
int stat, comm_buff_size;
ISISDSDataType ret_type;
int spec_nos[2] = { ifsn, nos };
int spec_nos_dims[1] = { 2 };
char* command = NULL;
char comm_buffer[256];
if (isisds_send_command(fh->s, "GETDAT", spec_nos, ISISDSInt32, spec_nos_dims, 1) <= 0)
{
IDCreport(0, 0, "error sending command (getdat)");
return -1;
};
ret_type = ISISDSInt32;
if (do_alloc)
{
stat = isisds_recv_command_alloc(fh->s, &command, (void**)value, &ret_type, dims_array, ndims);
}
else
{
comm_buff_size = sizeof(comm_buffer);
stat = isisds_recv_command(fh->s, comm_buffer, &comm_buff_size, *value, &ret_type, dims_array, ndims);
}
if (stat <= 0)
{
IDCreport(0, 0, "error reading command (getdat)");
return -1;
}
if (ret_type != ISISDSInt32)
{
IDCreport(0, 0, "invalid return type command (getdat)");
return -1;
}
/* IDCreport(0, 0, "type %s\n", isisds_type_name[ret_type]); */
return 0;
}
///Get a parameter
static int IDCgetpar(idc_handle_t fh, const char* name, void** value, ISISDSDataType type,
int dims_array[], int* ndims, int do_alloc)
{
int n, stat, comm_buff_size;
ISISDSDataType ret_type;
char* command = NULL;
char comm_buffer[256];
sprintf(comm_buffer, "GETPAR%s", isisds_type_code[type]);
n = static_cast<int>(strlen(name));
if (isisds_send_command(fh->s, comm_buffer, name, ISISDSChar, &n, 1) <= 0)
{
IDCreport(0, 0, "error sending command %s (getpar)", name);
return -1;
};
ret_type = type;
if (do_alloc)
{
stat = isisds_recv_command_alloc(fh->s, &command, value, &ret_type, dims_array, ndims);
}
else
{
comm_buff_size = sizeof(comm_buffer);
stat = isisds_recv_command(fh->s, comm_buffer, &comm_buff_size, *value, &ret_type, dims_array, ndims);
}
if (stat <= 0)
{
IDCreport(0, 0, "error receiving command %s (getpar)", name);
return -1;
}
/* IDCreport(0, 0, "type %s\n", isisds_type_name[ret_type]); */
if (ret_type != type)
{
return -1;
}
return 0;
}
/*
* client: open a socket and perform initial negotiation
* return connected socket or INVALID_SOCKET on error
*/
SOCKET isisds_send_open(const char *host, ISISDSAccessMode access_type,
uint16_t port) {
SOCKET s;
int setkeepalive = 1;
struct hostent *hostp;
struct sockaddr_in address;
char *comm, *comm_data;
/* int len_comm_data; */
isisds_open_t op;
ISISDSDataType data_type;
int dims_array[10], ndims;
if ((hostp = gethostbyname(host)) == NULL) {
return INVALID_SOCKET;
}
memset(&address, 0, sizeof(address));
memcpy(&(address.sin_addr.s_addr), hostp->h_addr_list[0], hostp->h_length);
address.sin_family = AF_INET;
address.sin_port = htons(port);
s = socket(PF_INET, SOCK_STREAM, 0);
if (s == INVALID_SOCKET) {
return INVALID_SOCKET;
}
setsockopt(s, SOL_SOCKET, SO_KEEPALIVE, (char *)&setkeepalive,
sizeof(setkeepalive));
if (connect(s, (struct sockaddr *)&address, sizeof(address)) == -1) {
closesocket(s);
return INVALID_SOCKET;
}
/* socket connected */
op.ver_major = ISISDS_MAJOR_VER;
op.ver_minor = ISISDS_MINOR_VER;
op.pid = 0;
op.pad[0] = 0;
op.access_type = access_type;
strncpy(op.user, "faa", sizeof(op.user));
strncpy(op.host, "localhost", sizeof(op.host));
op.len = sizeof(op);
if ((send(s, (char *)&op, sizeof(op), 0)) != sizeof(op)) {
closesocket(s);
return INVALID_SOCKET;
}
comm = NULL;
if (isisds_recv_command_alloc(s, &comm, (void **)&comm_data, &data_type,
dims_array, &ndims) <= 0) {
closesocket(s);
free(comm);
return INVALID_SOCKET;
}
if (comm_data != NULL) {
free(comm_data);
}
if (!strcmp(comm, "OK")) {
free(comm);
return s;
} else {
free(comm);
closesocket(s);
return INVALID_SOCKET;
}
}
