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/************************************************************************
** VOSIAP.C -- Worker procedure to make a query to an SIAP service.
**
** M. Fitzpatrick, NOAO, July 2007
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/ipc.h>
#include <sys/sem.h>
#include "VOClient.h"
#include "voAppsP.h"
#include "samp.h"
extern int errno;
extern int debug, verbose, all_named, all_data, save_res, extract, quiet;
extern int meta, dverbose, count, count_only, file_get, use_name, format;
extern int id_col, samp, samp_p;
extern char *output;
int vot_callSiapSvc (svcParams *pars);
char *vot_validateFile (char *fname);
extern int vot_extractResults (char *result, char delim, svcParams *pars);
extern int vot_printCount (Query query, svcParams *pars, int *count);
extern int vot_countResults (char *result);
extern void vot_printCountHdr (void);
extern void vot_printCountLine (int nrec, svcParams *pars);
extern void vot_dalExit (int code, int count);
extern void vot_printHdr (int fd, svcParams *pars);
extern void vot_printAttrs (char *fname, Query query, char *id);
extern char vot_svcTypeCode (int type);
extern char *vot_normalize (char *str);
extern char *vot_getOFName (svcParams *pars, char *extn, int pid);
extern char *vot_getOFIndex (svcParams *pars, char *extn, int pid);
/************************************************************************
** VOT_CALLSIAPSVC -- Call a Simple Image Access service.
*/
int
vot_callSiapSvc (svcParams *pars)
{
char *result = (char *)NULL;
char *extn, fname[SZ_LINE];
DAL siap; /* DAL Connection handle */
Query query; /* Query handle */
pid_t cpid;
int fd, code, res_count = 0;
if (debug)
fprintf (stderr, "siapCaller(%s:%d): ra = %f dec = %f\n",
pars->name, getpid(), pars->ra, pars->dec);
if ((cpid = fork()) < 0) {
fprintf (stderr,
"vot_callSiapSvc: Unable to create child process, exiting\n");
exit (-1);
} else if (cpid > 0) { /* Parent process */
return (cpid);
} else { /* Child process */
if (getenv("VOC_NO_NETWORK"))
return (OK);
/* Initialize the VOClient code. Error messages are printed by the
** interface so we just quit if there is a problem.
*/
if (voc_initVOClient ((char *) NULL) == ERR)
vot_dalExit (E_VOCINIT, 0);
/* Get a new connection to the named service and form the query.
*/
siap = voc_openSiapConnection (pars->service_url);
if (meta)
query = voc_getSiapQuery (siap, 0.0, 0.0, 0.0, 0.0, "METADATA");
else
query = voc_getSiapQuery (siap, pars->ra, pars->dec,
pars->sr, pars->sr, (char *)NULL);
/* Not all SIAP services support VERB, leave it out for now....
*/
if (verbose > 1)
(void) voc_addIntParam (query, "VERB", (all_data ? 3 : verbose));
/* Execute the query.
*/
if (debug) {
fprintf (stderr, "siapCaller(%s:%d): executing query....%d\n",
pars->name, getpid(), pars->fmt);
fprintf (stderr, "Executing SIAP Query(%d):\n %s\n\n", query,
voc_getQueryString (query, SIAP_CONN, 0));
}
if (count_only) {
if ((code = vot_printCount (query, pars, &res_count)) != E_NONE) {
vot_dalExit (code, res_count);
}
} else if (meta) {
memset (fname, 0, SZ_LINE);
if (output)
strcpy (fname, output);
else
sprintf (fname, "%s_%c.meta", vot_normalize (pars->name),
vot_svcTypeCode(pars->type));
vot_printAttrs (fname, query, pars->identifier);
} else {
char delim;
switch (pars->fmt) {
case F_ASCII:
extn = "asv"; delim = ' ';
result = voc_executeASCII (query);
break;
case F_RAW:
extn = "xml"; delim = '\0';
result = voc_executeVOTable (query);
break;
case F_RAW | F_XML:
extract |= EX_XML;
extn = "xml"; delim = '\0';
result = voc_executeVOTable (query);
break;
case F_CSV:
extn = "csv"; delim = ',';
result = voc_executeCSV (query);
break;
case F_CSV | F_HTML:
extract |= EX_HTML;
extn = "csv"; delim = ',';
result = voc_executeCSV (query);
break;
case F_CSV | F_KML:
extract |= EX_KML;
extn = "csv"; delim = ',';
result = voc_executeCSV (query);
break;
case F_TSV:
extn = "tsv"; delim = '\t';
result = voc_executeTSV (query);
break;
default:
fprintf (stderr, "siapCaller: Unknown format: %d\n", pars->fmt);
exit (-1);
}
if (!result) {
vot_dalExit (E_NODATA, 0);
} else if (pars->fmt != F_RAW) {
res_count = vot_extractResults (result, delim, pars);
} else if (pars->fmt == F_RAW) {
res_count = vot_countResults (result);
}
if (count && (!output || (output && output[0] != '-')))
vot_printCountLine (res_count, pars);
#ifdef EARLY_EXIT
if (res_count == 0) {
voc_closeConnection (siap);
voc_closeVOClient (0);
if (result) free ((char *) result);
vot_dalExit (E_NODATA, res_count);
}
#endif
/* Check for a NULL result indicating an error in the call.
*/
if (result == (char *)NULL) {
char *err;
extern char *voc_getErrMsg();
err = voc_getErrMsg ();
if (err && strncmp (err, "ERROR", 5) == 0) {
if (verbose > 1)
fprintf (stderr, "Pid %d: %s\n", getpid(), err);
vot_dalExit (E_REQFAIL, res_count);
} else
vot_dalExit (E_NODATA, res_count);
}
if (use_name || all_named || id_col)
strcpy (fname, vot_getOFName (pars, extn, (int)getpid()));
else
strcpy (fname, vot_getOFIndex (pars, extn, (int)getpid()));
if (output && output[0] == '-' && (! extract & EX_COLLECT)) {
write (fileno(stdout), result, strlen (result)-1);
} else if (format != (F_CSV|F_HTML) && format != (F_CSV|F_KML)) {
if ((fd = open (fname, O_WRONLY|O_CREAT, 0644)) < 0){
fprintf (stderr, "Error opening file '%s'\n", fname);
vot_dalExit (E_FILOPEN, res_count);
}
/* Output the result.
if (pars->fmt = F_CSV || pars->fmt == F_TSV)
vot_printHdr (fd, pars);
*/
if (result)
write (fd, result, strlen (result)-1);
close (fd);
}
}
voc_closeConnection (siap); /* close the siap connection */
voc_closeVOClient (0); /* close VOClient connection */
if (result) free ((void *) result); /* free local storage */
if (debug) {
fprintf (stderr, "siapCaller(%s:%d): exiting....\n",
pars->name, getpid());
}
if (samp) {
char url[SZ_FNAME], cwd[SZ_FNAME];
extern int samp_tableLoadVOTable ();
samp_p = sampInit ("VOData", "VOClient Data Access");
samp_setSyncMode (samp_p);
sampStartup (samp_p);
memset (cwd, 0, SZ_FNAME);
if (getcwd (cwd, SZ_FNAME) < 0)
strcpy (cwd, "./");
memset (url, 0, SZ_FNAME);
sprintf (url, "file://%s/%s", cwd, fname);
(void) samp_tableLoadVOTable (samp_p, "all", url, NULL, NULL);
samp_UnRegister (samp_p);
}
if (res_count == 0)
unlink (fname);
vot_dalExit (E_NONE, res_count); /* no error */
}
return (OK);
}
/************************************************************************
**
*/
char *
vot_validateFile (char *fname)
{
int fd, size;
static char buf[10], new[SZ_FNAME], *extn;
if ((fd = open (fname, O_RDONLY, 0777)) <= 0) {
unlink (fname);
return (0);
}
if ((size = read (fd, buf, 10)))
close (fd);
if (strncmp ("SIMPLE", buf, 6) == 0) {
extn = "fits";
} else if (strncmp ("GIF8", buf, 4) == 0) {
extn = "gif";
} else if (strncmp ("PNG\r\n", &buf[1], 5) == 0) {
extn = "png";
} else if (buf[0] == '\377' && buf[1] == '\330' && buf[2] == '\377' &&
buf[3] == '\340') {
extn = "jpg";
} else if (buf[0] == '\037' && buf[1] == '\213') {
extn = "gz";
} else
return (fname);
sprintf (new, "%s.%s", fname, extn);
rename (fname, new);
return (new);
}
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