source: BAORadio/libindi/v1.0.1/indidriver.c@ 616

#if 0
    INDI
    Copyright (C) 2003-2006 Elwood C. Downey

                        Updated by Jasem Mutlaq (2003-2010)

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

#endif


#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>

#include "lilxml.h"
#include "base64.h"
#include "eventloop.h"
#include "indidevapi.h"
#include "indicom.h"
#include "indidriver.h"

#define MAXRBUF 2048

/* tell Client to delete the property with given name on given device, or
 * entire device if !name
 */
void
IDDelete (const char *dev, const char *name, const char *fmt, ...)
{
        xmlv1();
        printf ("<delProperty\n  device='%s'\n", dev);
        if (name)
            printf (" name='%s'\n", name);
        printf ("  timestamp='%s'\n", timestamp());
        if (fmt) {
            va_list ap;
            va_start (ap, fmt);
            printf ("  message='");
            vprintf (fmt, ap);
            printf ("'\n");
            va_end (ap);
        }
        printf ("/>\n");
        fflush (stdout);
}

/* tell indiserver we want to snoop on the given device/property.
 * name ignored if NULL or empty.
 */
void
IDSnoopDevice (const char *snooped_device_name, const char *snooped_property_name)
{
        xmlv1();
        if (snooped_property_name && snooped_property_name[0])
            printf ("<getProperties device='%s' name='%s'/>\n",
                                    snooped_device_name, snooped_property_name);
        else
            printf ("<getProperties device='%s'/>\n", snooped_device_name);
        fflush (stdout);
}

/* tell indiserver whether we want BLOBs from the given snooped device.
 * silently ignored if given device is not already registered for snooping.
 */
void 
IDSnoopBLOBs (const char *snooped_device, BLOBHandling bh)
{
        const char *how;

        switch (bh) {
        case B_NEVER: how = "Never"; break;
        case B_ALSO:  how = "Also";  break;
        case B_ONLY:  how = "Only";  break;
        default: return;
        }

        xmlv1();
        printf ("<enableBLOB device='%s'>%s</enableBLOB>\n",
                                                snooped_device, how);
        fflush (stdout);
}

/* "INDI" wrappers to the more generic eventloop facility. */

int
IEAddCallback (int readfiledes, IE_CBF *fp, void *p)
{
        return (addCallback (readfiledes, (CBF*)fp, p));
}

void
IERmCallback (int callbackid)
{
        rmCallback (callbackid);
}

int
IEAddTimer (int millisecs, IE_TCF *fp, void *p)
{
        return (addTimer (millisecs, (TCF*)fp, p));
}

void
IERmTimer (int timerid)
{
        rmTimer (timerid);
}

int
IEAddWorkProc (IE_WPF *fp, void *p)
{
        return (addWorkProc ((WPF*)fp, p));
}

void
IERmWorkProc (int workprocid)
{
        rmWorkProc (workprocid);
}


int
IEDeferLoop (int maxms, int *flagp)
{
        return (deferLoop (maxms, flagp));
}

int
IEDeferLoop0 (int maxms, int *flagp)
{
        return (deferLoop0 (maxms, flagp));
}

/* Update property switches in accord with states and names. */
int 
IUUpdateSwitch(ISwitchVectorProperty *svp, ISState *states, char *names[], int n)
{
 int i=0;
 ISwitch *sp;
 char sn[MAXINDINAME];

 /* store On switch name */
 if (svp->r == ISR_1OFMANY)
 {
        sp = IUFindOnSwitch(svp);
        if (sp) strncpy(sn, sp->name, MAXINDINAME);
 
        IUResetSwitch(svp);
 }
 
 for (i = 0; i < n ; i++)
 {
   sp = IUFindSwitch(svp, names[i]);
         
   if (!sp)
   {
              svp->s = IPS_IDLE;
              IDSetSwitch(svp, "Error: %s is not a member of %s property.", names[i], svp->name);
              return -1;
   }
         
   sp->s = states[i]; 
 }
 
 /* Consistency checks for ISR_1OFMANY after update. */
 if (svp->r == ISR_1OFMANY)
 {
        int t_count=0;
        for (i=0; i < svp->nsp; i++)
        {
                if (svp->sp[i].s == ISS_ON)
                        t_count++;
        }
        if (t_count != 1)
        {
                IUResetSwitch(svp);
                sp = IUFindSwitch(svp, sn);
                if (sp) sp->s = ISS_ON;
                svp->s = IPS_IDLE;
                IDSetSwitch(svp, "Error: invalid state switch for property %s. %s.", svp->name, t_count == 0 ? "No switch is on" : "Too many switches are on");
                return -1;
        }
 }
                
 return 0;

}

/* Update property numbers in accord with values and names */
int IUUpdateNumber(INumberVectorProperty *nvp, double values[], char *names[], int n)
{
  int i=0;
  
  INumber *np;
  
  for (i = 0; i < n; i++)
  {
    np = IUFindNumber(nvp, names[i]);
    if (!np)
    {
        nvp->s = IPS_IDLE;
        IDSetNumber(nvp, "Error: %s is not a member of %s property.", names[i], nvp->name);
        return -1;
    }
    
    if (values[i] < np->min || values[i] > np->max)
    {
       nvp->s = IPS_IDLE;
       IDSetNumber(nvp, "Error: Invalid range. Valid range is from %g to %g", np->min, np->max);
       return -1;
    }
      
  }

  /* First loop checks for error, second loop set all values atomically*/
  for (i=0; i < n; i++)
  {
    np = IUFindNumber(nvp, names[i]);
    np->value = values[i];
  }

  return 0;

}

/* Update property text in accord with texts and names */
int IUUpdateText(ITextVectorProperty *tvp, char * texts[], char *names[], int n)
{
  int i=0;
  
  IText *tp;
  
  for (i = 0; i < n; i++)
  {
    tp = IUFindText(tvp, names[i]);
    if (!tp)
    {
        tvp->s = IPS_IDLE;
        IDSetText(tvp, "Error: %s is not a member of %s property.", names[i], tvp->name);
        return -1;
    }
  }

  /* First loop checks for error, second loop set all values atomically*/
  for (i=0; i < n; i++)
  {
    tp = IUFindText(tvp, names[i]);
    IUSaveText(tp, texts[i]);
  }

  return 0;

}

void IUFillSwitch(ISwitch *sp, const char *name, const char * label, ISState s)
{
  strncpy(sp->name, name, MAXINDINAME);
  strncpy(sp->label, label, MAXINDILABEL);
  sp->s = s;
  sp->svp = NULL;
  sp->aux = NULL;
}

void IUFillLight(ILight *lp, const char *name, const char * label, IPState s)
{
  strncpy(lp->name, name, MAXINDINAME);
  strncpy(lp->label, label, MAXINDILABEL);
  lp->s = s;
  lp->lvp = NULL;
  lp->aux = NULL;
}


void IUFillNumber(INumber *np, const char *name, const char * label, const char *format, double min, double max, double step, double value)
{

  strncpy(np->name, name, MAXINDINAME);
  strncpy(np->label, label, MAXINDILABEL);
  strncpy(np->format, format, MAXINDIFORMAT);
  
  np->min       = min;
  np->max       = max;
  np->step      = step;
  np->value     = value;
  np->nvp       = NULL;
  np->aux0      = NULL;
  np->aux1      = NULL;
}

void IUFillText(IText *tp, const char *name, const char * label, const char *initialText)
{

  strncpy(tp->name, name, MAXINDINAME);
  strncpy(tp->label, label, MAXINDILABEL);
  tp->text = NULL;
  tp->tvp  = NULL;
  tp->aux0 = NULL;
  tp->aux1 = NULL;

  IUSaveText(tp, initialText);

}

void IUFillBLOB(IBLOB *bp, const char *name, const char * label, const char *format)
{
    strncpy(bp->name, name, MAXINDINAME);
    strncpy(bp->label, label, MAXINDILABEL);
    strncpy(bp->format, label, MAXINDIBLOBFMT);
    bp->blob     = 0;
    bp->bloblen  = 0;
    bp->size     = 0;
    bp->bvp      = 0;
    bp->aux0     = 0;
    bp->aux1     = 0;
    bp->aux2     = 0;
}

void IUFillSwitchVector(ISwitchVectorProperty *svp, ISwitch *sp, int nsp, const char * dev, const char *name, const char *label, const char *group, IPerm p, ISRule r, double timeout, IPState s)
{
  strncpy(svp->device, dev, MAXINDIDEVICE);
  strncpy(svp->name, name, MAXINDINAME);
  strncpy(svp->label, label, MAXINDILABEL);
  strncpy(svp->group, group, MAXINDIGROUP);
  strcpy(svp->timestamp, "");
  
  svp->p        = p;
  svp->r        = r;
  svp->timeout  = timeout;
  svp->s        = s;
  svp->sp       = sp;
  svp->nsp      = nsp;
}

void IUFillLightVector(ILightVectorProperty *lvp, ILight *lp, int nlp, const char * dev, const char *name, const char *label, const char *group, IPState s)
{
    strncpy(lvp->device, dev, MAXINDIDEVICE);
    strncpy(lvp->name, name, MAXINDINAME);
    strncpy(lvp->label, label, MAXINDILABEL);
    strncpy(lvp->group, group, MAXINDIGROUP);
    strcpy(lvp->timestamp, "");
  
  lvp->s        = s;
  lvp->lp       = lp;
  lvp->nlp      = nlp;
}
 
void IUFillNumberVector(INumberVectorProperty *nvp, INumber *np, int nnp, const char * dev, const char *name, const char *label, const char* group, IPerm p, double timeout, IPState s)
{
  
 strncpy(nvp->device, dev, MAXINDIDEVICE);
 strncpy(nvp->name, name, MAXINDINAME);
 strncpy(nvp->label, label, MAXINDILABEL);
 strncpy(nvp->group, group, MAXINDIGROUP);
 strcpy(nvp->timestamp, "");
  
  nvp->p        = p;
  nvp->timeout  = timeout;
  nvp->s        = s;
  nvp->np       = np;
  nvp->nnp      = nnp;
  
}

void IUFillTextVector(ITextVectorProperty *tvp, IText *tp, int ntp, const char * dev, const char *name, const char *label, const char* group, IPerm p, double timeout, IPState s)
{
    strncpy(tvp->device, dev, MAXINDIDEVICE);
    strncpy(tvp->name, name, MAXINDINAME);
    strncpy(tvp->label, label, MAXINDILABEL);
    strncpy(tvp->group, group, MAXINDIGROUP);
    strcpy(tvp->timestamp, "");
  
  tvp->p        = p;
  tvp->timeout  = timeout;
  tvp->s        = s;
  tvp->tp       = tp;
  tvp->ntp      = ntp;

}

void IUFillBLOBVector(IBLOBVectorProperty *bvp, IBLOB *bp, int nbp, const char * dev, const char *name, const char *label, const char* group, IPerm p, double timeout, IPState s)
{
    strncpy(bvp->device, dev, MAXINDIDEVICE);
    strncpy(bvp->name, name, MAXINDINAME);
    strncpy(bvp->label, label, MAXINDILABEL);
    strncpy(bvp->group, group, MAXINDIGROUP);
    strcpy(bvp->timestamp, "");

  bvp->p        = p;
  bvp->timeout  = timeout;
  bvp->s        = s;
  bvp->bp       = bp;
  bvp->nbp      = nbp;

}

/*****************************************************************************
 * convenience functions for use in your implementation of ISSnoopDevice().
 */

/* crack the snooped driver setNumberVector or defNumberVector message into
 * the given INumberVectorProperty.
 * return 0 if type, device and name match and all members are present, else
 * return -1
 */
int
IUSnoopNumber (XMLEle *root, INumberVectorProperty *nvp)
{
        char *dev, *name;
        XMLEle *ep;
        int i;

        /* check and crack type, device, name and state */
        if (strcmp (tagXMLEle(root)+3, "NumberVector") ||
                                        crackDN (root, &dev, &name, NULL) < 0)
            return (-1);
        if (strcmp (dev, nvp->device) || strcmp (name, nvp->name))
            return (-1);        /* not this property */
        (void) crackIPState (findXMLAttValu (root,"state"), &nvp->s);

        /* match each INumber with a oneNumber */
        for (i = 0; i < nvp->nnp; i++) {
            for (ep = nextXMLEle(root,1); ep; ep = nextXMLEle(root,0)) {
                if (!strcmp (tagXMLEle(ep), "oneNumber") &&
                        !strcmp (nvp->np[i].name, findXMLAttValu(ep, "name"))) {
                    if (f_scansexa (pcdataXMLEle(ep), &nvp->np[i].value) < 0)
                        return (-1);    /* bad number format */
                    break;
                }
            }
            if (!ep)
                return (-1);    /* element not found */
        }

        /* ok */
        return (0);
}

/* crack the snooped driver setTextVector or defTextVector message into
 * the given ITextVectorProperty.
 * return 0 if type, device and name match and all members are present, else
 * return -1
 */
int
IUSnoopText (XMLEle *root, ITextVectorProperty *tvp)
{
        char *dev, *name;
        XMLEle *ep;
        int i;

        /* check and crack type, device, name and state */
        if (strcmp (tagXMLEle(root)+3, "TextVector") ||
                                        crackDN (root, &dev, &name, NULL) < 0)
            return (-1);
        if (strcmp (dev, tvp->device) || strcmp (name, tvp->name))
            return (-1);        /* not this property */
        (void) crackIPState (findXMLAttValu (root,"state"), &tvp->s);

        /* match each IText with a oneText */
        for (i = 0; i < tvp->ntp; i++) {
            for (ep = nextXMLEle(root,1); ep; ep = nextXMLEle(root,0)) {
                if (!strcmp (tagXMLEle(ep), "oneText") &&
                        !strcmp (tvp->tp[i].name, findXMLAttValu(ep, "name"))) {
                    IUSaveText (&tvp->tp[i], pcdataXMLEle(ep));
                    break;
                }
            }
            if (!ep)
                return (-1);    /* element not found */
        }

        /* ok */
        return (0);
}

/* crack the snooped driver setLightVector or defLightVector message into
 * the given ILightVectorProperty. it is not necessary that all ILight names
 * be found.
 * return 0 if type, device and name match, else return -1.
 */
int
IUSnoopLight (XMLEle *root, ILightVectorProperty *lvp)
{
        char *dev, *name;
        XMLEle *ep;
        int i;

        /* check and crack type, device, name and state */
        if (strcmp (tagXMLEle(root)+3, "LightVector") ||
                                        crackDN (root, &dev, &name, NULL) < 0)
            return (-1);
        if (strcmp (dev, lvp->device) || strcmp (name, lvp->name))
            return (-1);        /* not this property */

        (void) crackIPState (findXMLAttValu (root,"state"), &lvp->s);

        /* match each oneLight with one ILight */
        for (ep = nextXMLEle(root,1); ep; ep = nextXMLEle(root,0)) {
            if (!strcmp (tagXMLEle(ep), "oneLight")) {
                const char *name = findXMLAttValu (ep, "name");
                for (i = 0; i < lvp->nlp; i++) {
                    if (!strcmp (lvp->lp[i].name, name)) {
                        if (crackIPState(pcdataXMLEle(ep), &lvp->lp[i].s) < 0) {
                            return (-1);        /* unrecognized state */
                        }
                        break;
                    }
                }
            }
        }

        /* ok */
        return (0);
}

/* crack the snooped driver setSwitchVector or defSwitchVector message into the
 * given ISwitchVectorProperty. it is not necessary that all ISwitch names be
 * found.
 * return 0 if type, device and name match, else return -1.
 */
int
IUSnoopSwitch (XMLEle *root, ISwitchVectorProperty *svp)
{
        char *dev, *name;
        XMLEle *ep;
        int i;

        /* check and crack type, device, name and state */
        if (strcmp (tagXMLEle(root)+3, "SwitchVector") ||
                                        crackDN (root, &dev, &name, NULL) < 0)
            return (-1);
        if (strcmp (dev, svp->device) || strcmp (name, svp->name))
            return (-1);        /* not this property */
        (void) crackIPState (findXMLAttValu (root,"state"), &svp->s);

        /* match each oneSwitch with one ISwitch */
        for (ep = nextXMLEle(root,1); ep; ep = nextXMLEle(root,0)) {
            if (!strcmp (tagXMLEle(ep), "oneSwitch")) {
                const char *name = findXMLAttValu (ep, "name");
                for (i = 0; i < svp->nsp; i++) {
                    if (!strcmp (svp->sp[i].name, name)) {
                        if (crackISState(pcdataXMLEle(ep), &svp->sp[i].s) < 0) {
                            return (-1);        /* unrecognized state */
                        }
                        break;
                    }
                }
            }
        }

        /* ok */
        return (0);
}

/* crack the snooped driver setBLOBVector message into the given
 * IBLOBVectorProperty. it is not necessary that all IBLOB names be found.
 * return 0 if type, device and name match, else return -1.
 * N.B. we assume any existing blob in bvp has been malloced, which we free
 *   and replace with a newly malloced blob if found.
 */
int
IUSnoopBLOB (XMLEle *root, IBLOBVectorProperty *bvp)
{
        char *dev, *name;
        XMLEle *ep;
        int i;

        /* check and crack type, device, name and state */
        if (strcmp (tagXMLEle(root), "setBLOBVector") ||
                                        crackDN (root, &dev, &name, NULL) < 0)
            return (-1);
        if (strcmp (dev, bvp->device) || strcmp (name, bvp->name))
            return (-1);        /* not this property */
        (void) crackIPState (findXMLAttValu (root,"state"), &bvp->s);

        /* match each oneBLOB with one IBLOB */
        for (ep = nextXMLEle(root,1); ep; ep = nextXMLEle(root,0)) {
            if (!strcmp (tagXMLEle(ep), "oneBLOB")) {
                const char *name = findXMLAttValu (ep, "name");
                for (i = 0; i < bvp->nbp; i++) {
                    IBLOB *bp = &bvp->bp[i];
                    if (!strcmp (bp->name, name)) {
                        strcpy (bp->format, findXMLAttValu (ep,"format"));
                        bp->size = atof (findXMLAttValu (ep,"size"));
                        bp->bloblen = pcdatalenXMLEle(ep)+1;
                        if (bp->blob)
                            free (bp->blob);
                        bp->blob = strcpy(malloc(bp->bloblen),pcdataXMLEle(ep));
                        break;
                    }
                }
            }
        }

        /* ok */
        return (0);
}

/* callback when INDI client message arrives on stdin.
 * collect and dispatch when see outter element closure.
 * exit if OS trouble or see incompatable INDI version.
 * arg is not used.
 */
void
clientMsgCB (int fd, void *arg)
{
        char buf[1024], msg[1024], *bp;
        int nr;
        arg=arg;

        /* one read */
        nr = read (fd, buf, sizeof(buf));
        if (nr < 0) {
            fprintf (stderr, "%s: %s\n", me, strerror(errno));
            exit(1);
        }
        if (nr == 0) {
            fprintf (stderr, "%s: EOF\n", me);
            exit(1);
        }

        /* crack and dispatch when complete */
        for (bp = buf; nr-- > 0; bp++) {
            XMLEle *root = readXMLEle (clixml, *bp, msg);
            if (root) {
                if (dispatch (root, msg) < 0)
                    fprintf (stderr, "%s dispatch error: %s\n", me, msg);
                delXMLEle (root);
            } else if (msg[0])
                fprintf (stderr, "%s XML error: %s\n", me, msg);
        }

}

/* crack the given INDI XML element and call driver's IS* entry points as they
 *   are recognized.
 * return 0 if ok else -1 with reason in msg[].
 * N.B. exit if getProperties does not proclaim a compatible version.
 */
int
dispatch (XMLEle *root, char msg[])
{
        char *rtag = tagXMLEle(root);
        XMLEle *ep;
        int n,i=0;

        if (verbose)
            prXMLEle (stderr, root, 0);

        /* check tag in surmised decreasing order of likelyhood */

        if (!strcmp (rtag, "newNumberVector")) {
            static double *doubles;
            static char **names;
            static int maxn;
            char *dev, *name;

            /* pull out device and name */
            if (crackDN (root, &dev, &name, msg) < 0)
                return (-1);

            /* seed for reallocs */
            if (!doubles) {
                doubles = (double *) malloc (1);
                names = (char **) malloc (1);
            }

            /* pull out each name/value pair */
            for (n = 0, ep = nextXMLEle(root,1); ep; ep = nextXMLEle(root,0)) {
                if (strcmp (tagXMLEle(ep), "oneNumber") == 0) {
                    XMLAtt *na = findXMLAtt (ep, "name");
                    if (na) {
                        if (n >= maxn) {
                            /* grow for this and another */
                            int newsz = (maxn=n+1)*sizeof(double);
                            doubles = (double *) realloc(doubles,newsz);
                            newsz = maxn*sizeof(char *);
                            names = (char **) realloc (names, newsz);
                        }
                        if (f_scansexa (pcdataXMLEle(ep), &doubles[n]) < 0)
                            IDMessage (dev,"%s: Bad format %s", name,
                                                            pcdataXMLEle(ep));
                        else
                            names[n++] = valuXMLAtt(na);
                    }
                }
            }

            /* insure property is not RO */
            for (i=0; i < nroCheck; i++)
            {
              if (!strcmp(roCheck[i].propName, name))
              {
               if (roCheck[i].perm == IP_RO)
                 return -1;
              }
            }

            /* invoke driver if something to do, but not an error if not */
            if (n > 0)
                ISNewNumber (dev, name, doubles, names, n);
            else
                IDMessage(dev,"%s: newNumberVector with no valid members",name);
            return (0);
        }

        if (!strcmp (rtag, "newSwitchVector")) {
            static ISState *states;
            static char **names;
            static int maxn;
            char *dev, *name;
            XMLEle *ep;

            /* pull out device and name */
            if (crackDN (root, &dev, &name, msg) < 0)
                return (-1);

            /* seed for reallocs */
            if (!states) {
                states = (ISState *) malloc (1);
                names = (char **) malloc (1);
            }

            /* pull out each name/state pair */
            for (n = 0, ep = nextXMLEle(root,1); ep; ep = nextXMLEle(root,0)) {
                if (strcmp (tagXMLEle(ep), "oneSwitch") == 0) {
                    XMLAtt *na = findXMLAtt (ep, "name");
                    if (na) {
                        if (n >= maxn) {
                            int newsz = (maxn=n+1)*sizeof(ISState);
                            states = (ISState *) realloc(states, newsz);
                            newsz = maxn*sizeof(char *);
                            names = (char **) realloc (names, newsz);
                        }
                        if (strcmp (pcdataXMLEle(ep),"On") == 0) {
                            states[n] = ISS_ON;
                            names[n] = valuXMLAtt(na);
                            n++;
                        } else if (strcmp (pcdataXMLEle(ep),"Off") == 0) {
                            states[n] = ISS_OFF;
                            names[n] = valuXMLAtt(na);
                            n++;
                        } else
                            IDMessage (dev, "%s: must be On or Off: %s", name,
                                                            pcdataXMLEle(ep));
                    }
                }
            }

            /* insure property is not RO */
            for (i=0; i < nroCheck; i++)
            {
              if (!strcmp(roCheck[i].propName, name))
              {
               if (roCheck[i].perm == IP_RO)
                 return -1;
              }
            }

            /* invoke driver if something to do, but not an error if not */
            if (n > 0)
                ISNewSwitch (dev, name, states, names, n);
            else
                IDMessage(dev,"%s: newSwitchVector with no valid members",name);
            return (0);
        }

        if (!strcmp (rtag, "newTextVector")) {
            static char **texts;
            static char **names;
            static int maxn;
            char *dev, *name;

            /* pull out device and name */
            if (crackDN (root, &dev, &name, msg) < 0)
                return (-1);

            /* seed for reallocs */
            if (!texts) {
                texts = (char **) malloc (1);
                names = (char **) malloc (1);
            }

            /* pull out each name/text pair */
            for (n = 0, ep = nextXMLEle(root,1); ep; ep = nextXMLEle(root,0)) {
                if (strcmp (tagXMLEle(ep), "oneText") == 0) {
                    XMLAtt *na = findXMLAtt (ep, "name");
                    if (na) {
                        if (n >= maxn) {
                            int newsz = (maxn=n+1)*sizeof(char *);
                            texts = (char **) realloc (texts, newsz);
                            names = (char **) realloc (names, newsz);
                        }
                        texts[n] = pcdataXMLEle(ep);
                        names[n] = valuXMLAtt(na);
                        n++;
                    }
                }
            }

            /* insure property is not RO */
            for (i=0; i < nroCheck; i++)
            {
              if (!strcmp(roCheck[i].propName, name))
              {
               if (roCheck[i].perm == IP_RO)
                 return -1;
              }
            }

            /* invoke driver if something to do, but not an error if not */
            if (n > 0)
                ISNewText (dev, name, texts, names, n);
            else
                IDMessage (dev, "%s: set with no valid members", name);
            return (0);
        }

        if (!strcmp (rtag, "newBLOBVector")) {
            static char **blobs;
            static char **names;
            static char **formats;
            static int *blobsizes;
            static int *sizes;
            static int maxn;
            char *dev, *name;
            int i;

            /* pull out device and name */
            if (crackDN (root, &dev, &name, msg) < 0)
                return (-1);

            /* seed for reallocs */
            if (!blobs) {
                blobs = (char **) malloc (1);
                names = (char **) malloc (1);
                formats = (char **) malloc (1);
                blobsizes = (int *) malloc (1);
                sizes = (int *) malloc (1);
            }

            /* pull out each name/BLOB pair, decode */
            for (n = 0, ep = nextXMLEle(root,1); ep; ep = nextXMLEle(root,0)) {
                if (strcmp (tagXMLEle(ep), "oneBLOB") == 0) {
                    XMLAtt *na = findXMLAtt (ep, "name");
                    XMLAtt *fa = findXMLAtt (ep, "format");
                    XMLAtt *sa = findXMLAtt (ep, "size");
                    if (na && fa && sa) {
                        if (n >= maxn) {
                            int newsz = (maxn=n+1)*sizeof(char *);
                            blobs = (char **) realloc (blobs, newsz);
                            names = (char **) realloc (names, newsz);
                            formats = (char **) realloc(formats,newsz);
                            newsz = maxn*sizeof(int);
                            sizes = (int *) realloc(sizes,newsz);
                            blobsizes = (int *) realloc(blobsizes,newsz);
                        }
                        blobs[n] = malloc (3*pcdatalenXMLEle(ep)/4);
                        blobsizes[n] = from64tobits(blobs[n], pcdataXMLEle(ep));
                        names[n] = valuXMLAtt(na);
                        formats[n] = valuXMLAtt(fa);
                        sizes[n] = atoi(valuXMLAtt(sa));
                        n++;
                    }
                }
            }

            /* invoke driver if something to do, but not an error if not */
            if (n > 0) {
                ISNewBLOB (dev, name, sizes, blobsizes, blobs, formats,names,n);
                for (i = 0; i < n; i++)
                    free (blobs[i]);
            } else
                IDMessage (dev, "%s: newBLOBVector with no valid members",name);
            return (0);
        }

        if (!strcmp (rtag, "getProperties")) {
            XMLAtt *ap;
            double v;

            /* check version */
            ap = findXMLAtt (root, "version");
            if (!ap) {
                fprintf (stderr, "%s: getProperties missing version\n", me);
                exit(1);
            }
            v = atof (valuXMLAtt(ap));
            if (v > INDIV) {
                fprintf (stderr, "%s: client version %g > %g\n", me, v, INDIV);
                exit(1);
            }

            /* ok */
            ap = findXMLAtt (root, "device");
            ISGetProperties (ap ? valuXMLAtt(ap) : NULL);
            return (0);
        }

        /* other commands might be from a snooped device.
         * we don't know here which devices are being snooped so we send
         * all remaining valid messages
         */
        if (        !strcmp (rtag, "setNumberVector") ||
                    !strcmp (rtag, "setTextVector") ||
                    !strcmp (rtag, "setLightVector") ||
                    !strcmp (rtag, "setSwitchVector") ||
                    !strcmp (rtag, "setBLOBVector") ||
                    !strcmp (rtag, "defNumberVector") ||
                    !strcmp (rtag, "defTextVector") ||
                    !strcmp (rtag, "defLightVector") ||
                    !strcmp (rtag, "defSwitchVector") ||
                    !strcmp (rtag, "defBLOBVector") ||
                    !strcmp (rtag, "message") ||
                    !strcmp (rtag, "delProperty")) {
            ISSnoopDevice (root);
            return (0);
        }

        sprintf (msg, "Unknown command: %s", rtag);
        return(1);
}

int IUReadConfig(const char *filename, const char *dev, char errmsg[])
{
    char configFileName[MAXRBUF], configDefaultFileName[MAXRBUF];
    char *rname, *rdev;
    XMLEle *root = NULL, *fproot = NULL;
    LilXML *lp = newLilXML();

    FILE *fp = NULL;

    if (filename)
         strncpy(configFileName, filename, MAXRBUF);
     else
    {
        if (getenv("INDICONFIG"))
            strncpy(configFileName, getenv("INDICONFIG"), MAXRBUF);
        else
           snprintf(configFileName, MAXRBUF, "%s/.indi/%s_config.xml", getenv("HOME"), dev);

    }

    fp = fopen(configFileName, "r");
    if (fp == NULL)
    {
         snprintf(errmsg, MAXRBUF, "Unable to read config file. Error loading file %s: %s\n", filename, strerror(errno));
         return -1;
    }

    fproot = readXMLFile(fp, lp, errmsg);

    if (fproot == NULL)
    {
        snprintf(errmsg, MAXRBUF, "Unable to parse config XML: %s", errmsg);
        return -1;
    }

    for (root = nextXMLEle (fproot, 1); root != NULL; root = nextXMLEle (fproot, 0))
    {

        /* pull out device and name */
        if (crackDN (root, &rdev, &rname, errmsg) < 0)
            return -1;

        // It doesn't belong to our device??
        if (strcmp(dev, rdev))
            continue;

        dispatch(root, errmsg);

    }

    fclose(fp);
    delXMLEle(fproot);
    delXMLEle(root);
    delLilXML(lp);

    return (0);

}


void IUSaveDefaultConfig(const char *source_config, const char *dest_config, const char *dev)
{

    char configFileName[MAXRBUF], configDefaultFileName[MAXRBUF];

    if (source_config)
         strncpy(configFileName, source_config, MAXRBUF);
     else
    {
        if (getenv("INDICONFIG"))
           strncpy(configFileName, getenv("INDICONFIG"), MAXRBUF);
        else
           snprintf(configFileName, MAXRBUF, "%s/.indi/%s_config.xml", getenv("HOME"), dev);

    }

     if (dest_config)
         strncpy(configDefaultFileName, dest_config, MAXRBUF);
     else if (getenv("INDICONFIG"))
         snprintf(configDefaultFileName, MAXRBUF, "%s.default", getenv("INDICONFIG"));
     else
        snprintf(configDefaultFileName, MAXRBUF, "%s/.indi/%s_config.xml.default", getenv("HOME"), dev);

  // If the default doesn't exist, create it.
  if (access(configDefaultFileName, F_OK))
  {
    FILE *fpin = fopen(configFileName, "r");
      if(fpin != NULL)
      {
        FILE *fpout = fopen(configDefaultFileName, "w");
        if(fpout != NULL)
        {
          int ch = 0;
          while((ch = getc(fpin)) != EOF)
            putc(ch, fpout);

          fclose(fpin);
          fclose(fpout);
       }
    }
  }

}




/* send client a message for a specific device or at large if !dev */
void
IDMessage (const char *dev, const char *fmt, ...)
{

        xmlv1();
        printf ("<message\n");
        if (dev)
            printf (" device='%s'\n", dev);
        printf ("  timestamp='%s'\n", timestamp());
        if (fmt) {
            va_list ap;
            va_start (ap, fmt);
            printf ("  message='");
            vprintf (fmt, ap);
            printf ("'\n");
            va_end (ap);
        }
        printf ("/>\n");
        fflush (stdout);
}

FILE * IUGetConfigFP(const char *filename, const char *dev, char errmsg[])
{
    char configFileName[MAXRBUF];
    char configDir[MAXRBUF];
    struct stat st;
    FILE *fp = NULL;

    snprintf(configDir, MAXRBUF, "%s/.indi/", getenv("HOME"));

    if (filename)
         strncpy(configFileName, filename, MAXRBUF);
     else
    {
        if (getenv("INDICONFIG"))
            strncpy(configFileName, getenv("INDICONFIG"), MAXRBUF);
        else
           snprintf(configFileName, MAXRBUF, "%s%s_config.xml", configDir, dev);

    }

     if(stat(configDir,&st) != 0)
     {
         if (mkdir(configDir, S_IRWXU|S_IRWXG|S_IROTH|S_IXOTH) < 0)
         {
             snprintf(errmsg, MAXRBUF, "Unable to create config directory. Error %s: %s\n", configDir, strerror(errno));
             return NULL;
         }
     }

     fp = fopen(configFileName, "w");
     if (fp == NULL)
     {
          snprintf(errmsg, MAXRBUF, "Unable to open config file. Error loading file %s: %s\n", configFileName, strerror(errno));
          return NULL;
     }

     return fp;
}

void IUSaveConfigTag(FILE *fp, int ctag)
{
    if (!fp)
        return;

    /* Opening tag */
    if (ctag == 0)
        fprintf(fp, "<INDIDriver>\n");
    /* Closing tag */
    else
       fprintf(fp, "</INDIDriver>\n");
}

void IUSaveConfigNumber (FILE *fp, const INumberVectorProperty *nvp)
{
    int i;

    fprintf (fp, "<newNumberVector device='%s' name='%s'>\n", nvp->device, nvp->name);

    for (i = 0; i < nvp->nnp; i++)
    {
        INumber *np = &nvp->np[i];
        fprintf (fp, "  <oneNumber name='%s'>\n", np->name);
        fprintf (fp, "      %.20g\n", np->value);
        fprintf (fp, "  </oneNumber>\n");
    }

    fprintf (fp, "</newNumberVector>\n");
}

void IUSaveConfigText (FILE *fp, const ITextVectorProperty *tvp)
{
    int i;

    fprintf (fp, "<newTextVector device='%s' name='%s'>\n", tvp->device, tvp->name);

    for (i = 0; i < tvp->ntp; i++)
    {
        IText *tp = &tvp->tp[i];
        fprintf (fp, "  <oneText name='%s'>\n", tp->name);
        fprintf (fp, "      %s\n", tp->text ? tp->text : "");
        fprintf (fp, "  </oneText>\n");
    }

    fprintf (fp, "</newTextVector>\n");

}

void IUSaveConfigSwitch (FILE *fp, const ISwitchVectorProperty *svp)
{
    int i;

    fprintf (fp, "<newSwitchVector device='%s' name='%s'>\n", svp->device, svp->name);

    for (i = 0; i < svp->nsp; i++)
    {
        ISwitch *sp = &svp->sp[i];
        fprintf (fp, "  <oneSwitch name='%s'>\n", sp->name);
        fprintf (fp, "      %s\n", sstateStr(sp->s));
        fprintf (fp, "  </oneSwitch>\n");
    }

    fprintf (fp, "</newSwitchVector>\n");

}

void IUSaveConfigBLOB (FILE *fp, const IBLOBVectorProperty *bvp)
{
    int i;

    fprintf (fp, "<newBLOBVector device='%s' name='%s'>\n", bvp->device, bvp->name);

    for (i = 0; i < bvp->nbp; i++)
    {
        IBLOB *bp = &bvp->bp[i];
        unsigned char *encblob;
        int j, l;

        fprintf (fp, "  <oneBLOB\n");
        fprintf (fp, "    name='%s'\n", bp->name);
        fprintf (fp, "    size='%d'\n", bp->size);
        fprintf (fp, "    format='%s'>\n", bp->format);

        encblob = malloc (4*bp->bloblen/3+4);
        l = to64frombits(encblob, bp->blob, bp->bloblen);
        for (j = 0; j < l; j += 72)
            fprintf (fp, "%.72s\n", encblob+j);
        free (encblob);

        fprintf (fp, "  </oneBLOB>\n");
    }

    fprintf (fp, "</newBLOBVector>\n");

}

/* tell client to create a text vector property */
void
IDDefText (const ITextVectorProperty *tvp, const char *fmt, ...)
{
        int i;
        ROSC *SC;

        xmlv1();
        printf ("<defTextVector\n");
        printf ("  device='%s'\n", tvp->device);
        printf ("  name='%s'\n", tvp->name);
        printf ("  label='%s'\n", tvp->label);
        printf ("  group='%s'\n", tvp->group);
        printf ("  state='%s'\n", pstateStr(tvp->s));
        printf ("  perm='%s'\n", permStr(tvp->p));
        printf ("  timeout='%g'\n", tvp->timeout);
        printf ("  timestamp='%s'\n", timestamp());
        if (fmt) {
            va_list ap;
            va_start (ap, fmt);
            printf ("  message='");
            vprintf (fmt, ap);
            printf ("'\n");
            va_end (ap);
        }
        printf (">\n");

        for (i = 0; i < tvp->ntp; i++) {
            IText *tp = &tvp->tp[i];
            printf ("  <defText\n");
            printf ("    name='%s'\n", tp->name);
            printf ("    label='%s'>\n", tp->label);
            printf ("      %s\n", tp->text ? tp->text : "");
            printf ("  </defText>\n");
        }

        printf ("</defTextVector>\n");

        if (!isPropDefined(tvp->name))
        {
                /* Add this property to insure proper sanity check */
                roCheck = roCheck ? (ROSC *) realloc ( roCheck, sizeof(ROSC) * (nroCheck+1))
                                : (ROSC *) malloc  ( sizeof(ROSC));
                SC      = &roCheck[nroCheck++];

                strcpy(SC->propName, tvp->name);
                SC->perm = tvp->p;
        }

        fflush (stdout);
}

/* tell client to create a new numeric vector property */
void
IDDefNumber (const INumberVectorProperty *n, const char *fmt, ...)
{
        int i;
        ROSC *SC;

        xmlv1();
        printf ("<defNumberVector\n");
        printf ("  device='%s'\n", n->device);
        printf ("  name='%s'\n", n->name);
        printf ("  label='%s'\n", n->label);
        printf ("  group='%s'\n", n->group);
        printf ("  state='%s'\n", pstateStr(n->s));
        printf ("  perm='%s'\n", permStr(n->p));
        printf ("  timeout='%g'\n", n->timeout);
        printf ("  timestamp='%s'\n", timestamp());


        if (fmt) {
            va_list ap;
            va_start (ap, fmt);
            printf ("  message='");
            vprintf (fmt, ap);
            printf ("'\n");
            va_end (ap);
        }
        printf (">\n");


        for (i = 0; i < n->nnp; i++) {

            INumber *np = &n->np[i];

            printf ("  <defNumber\n");
            printf ("    name='%s'\n", np->name);
            printf ("    label='%s'\n", np->label);
            printf ("    format='%s'\n", np->format);
            printf ("    min='%.20g'\n", np->min);
            printf ("    max='%.20g'\n", np->max);
            printf ("    step='%.20g'>\n", np->step);
            printf ("      %.20g\n", np->value);

            printf ("  </defNumber>\n");
        }

        printf ("</defNumberVector>\n");

        if (!isPropDefined(n->name))
        {
                /* Add this property to insure proper sanity check */
                roCheck = roCheck ? (ROSC *) realloc ( roCheck, sizeof(ROSC) * (nroCheck+1))
                                : (ROSC *) malloc  ( sizeof(ROSC));
                SC      = &roCheck[nroCheck++];

                strcpy(SC->propName, n->name);
                SC->perm = n->p;

        }

        fflush (stdout);
}

/* tell client to create a new switch vector property */
void
IDDefSwitch (const ISwitchVectorProperty *s, const char *fmt, ...)

{
        int i;
        ROSC *SC;

        xmlv1();
        printf ("<defSwitchVector\n");
        printf ("  device='%s'\n", s->device);
        printf ("  name='%s'\n", s->name);
        printf ("  label='%s'\n", s->label);
        printf ("  group='%s'\n", s->group);
        printf ("  state='%s'\n", pstateStr(s->s));
        printf ("  perm='%s'\n", permStr(s->p));
        printf ("  rule='%s'\n", ruleStr (s->r));
        printf ("  timeout='%g'\n", s->timeout);
        printf ("  timestamp='%s'\n", timestamp());
        if (fmt) {
            va_list ap;
            va_start (ap, fmt);
            printf ("  message='");
            vprintf (fmt, ap);
            printf ("'\n");
            va_end (ap);
        }
        printf (">\n");

        for (i = 0; i < s->nsp; i++) {
            ISwitch *sp = &s->sp[i];
            printf ("  <defSwitch\n");
            printf ("    name='%s'\n", sp->name);
            printf ("    label='%s'>\n", sp->label);
            printf ("      %s\n", sstateStr(sp->s));
            printf ("  </defSwitch>\n");
        }

        printf ("</defSwitchVector>\n");

        if (!isPropDefined(s->name))
        {
                /* Add this property to insure proper sanity check */
                roCheck = roCheck ? (ROSC *) realloc ( roCheck, sizeof(ROSC) * (nroCheck+1))
                                : (ROSC *) malloc  ( sizeof(ROSC));
                SC      = &roCheck[nroCheck++];

                strcpy(SC->propName, s->name);
                SC->perm = s->p;
        }

        fflush (stdout);
}

/* tell client to create a new lights vector property */
void
IDDefLight (const ILightVectorProperty *lvp, const char *fmt, ...)
{
        int i;

        xmlv1();
        printf ("<defLightVector\n");
        printf ("  device='%s'\n", lvp->device);
        printf ("  name='%s'\n", lvp->name);
        printf ("  label='%s'\n", lvp->label);
        printf ("  group='%s'\n", lvp->group);
        printf ("  state='%s'\n", pstateStr(lvp->s));
        printf ("  timestamp='%s'\n", timestamp());
        if (fmt) {
            va_list ap;
            va_start (ap, fmt);
            printf ("  message='");
            vprintf (fmt, ap);
            printf ("'\n");
            va_end (ap);
        }
        printf (">\n");

        for (i = 0; i < lvp->nlp; i++) {
            ILight *lp = &lvp->lp[i];
            printf ("  <defLight\n");
            printf ("    name='%s'\n", lp->name);
            printf ("    label='%s'>\n", lp->label);
            printf ("      %s\n", pstateStr(lp->s));
            printf ("  </defLight>\n");
        }

        printf ("</defLightVector>\n");
        fflush (stdout);
}

/* tell client to create a new BLOB vector property */
void
IDDefBLOB (const IBLOBVectorProperty *b, const char *fmt, ...)
{
  int i;
  ROSC *SC;

        xmlv1();
        printf ("<defBLOBVector\n");
        printf ("  device='%s'\n", b->device);
        printf ("  name='%s'\n", b->name);
        printf ("  label='%s'\n", b->label);
        printf ("  group='%s'\n", b->group);
        printf ("  state='%s'\n", pstateStr(b->s));
        printf ("  perm='%s'\n", permStr(b->p));
        printf ("  timeout='%g'\n", b->timeout);
        printf ("  timestamp='%s'\n", timestamp());
        if (fmt) {
            va_list ap;
            va_start (ap, fmt);
            printf ("  message='");
            vprintf (fmt, ap);
            printf ("'\n");
            va_end (ap);
        }
        printf (">\n");

  for (i = 0; i < b->nbp; i++) {
    IBLOB *bp = &b->bp[i];
    printf ("  <defBLOB\n");
    printf ("    name='%s'\n", bp->name);
    printf ("    label='%s'\n", bp->label);
    printf ("  />\n");
  }

        printf ("</defBLOBVector>\n");

        if (!isPropDefined(b->name))
        {
                /* Add this property to insure proper sanity check */
                roCheck = roCheck ? (ROSC *) realloc ( roCheck, sizeof(ROSC) * (nroCheck+1))
                                : (ROSC *) malloc  ( sizeof(ROSC));
                SC      = &roCheck[nroCheck++];

                strcpy(SC->propName, b->name);
                SC->perm = b->p;
        }

        fflush (stdout);
}

/* tell client to update an existing text vector property */
void
IDSetText (const ITextVectorProperty *tvp, const char *fmt, ...)
{
        int i;

        xmlv1();
        printf ("<setTextVector\n");
        printf ("  device='%s'\n", tvp->device);
        printf ("  name='%s'\n", tvp->name);
        printf ("  state='%s'\n", pstateStr(tvp->s));
        printf ("  timeout='%g'\n", tvp->timeout);
        printf ("  timestamp='%s'\n", timestamp());
        if (fmt) {
            va_list ap;
            va_start (ap, fmt);
            printf ("  message='");
            vprintf (fmt, ap);
            printf ("'\n");
            va_end (ap);
        }
        printf (">\n");

        for (i = 0; i < tvp->ntp; i++) {
            IText *tp = &tvp->tp[i];
            printf ("  <oneText name='%s'>\n", tp->name);
            printf ("      %s\n", tp->text ? tp->text : "");
            printf ("  </oneText>\n");
        }

        printf ("</setTextVector>\n");
        fflush (stdout);
}

/* tell client to update an existing numeric vector property */
void
IDSetNumber (const INumberVectorProperty *nvp, const char *fmt, ...)
{
        int i;

        xmlv1();
        printf ("<setNumberVector\n");
        printf ("  device='%s'\n", nvp->device);
        printf ("  name='%s'\n", nvp->name);
        printf ("  state='%s'\n", pstateStr(nvp->s));
        printf ("  timeout='%g'\n", nvp->timeout);
        printf ("  timestamp='%s'\n", timestamp());
        if (fmt) {
            va_list ap;
            va_start (ap, fmt);
            printf ("  message='");
            vprintf (fmt, ap);
            printf ("'\n");
            va_end (ap);
        }
        printf (">\n");

        for (i = 0; i < nvp->nnp; i++) {
            INumber *np = &nvp->np[i];
            printf ("  <oneNumber name='%s'>\n", np->name);
            printf ("      %.20g\n", np->value);
            printf ("  </oneNumber>\n");
        }

        printf ("</setNumberVector>\n");
        fflush (stdout);
}

/* tell client to update an existing switch vector property */
void
IDSetSwitch (const ISwitchVectorProperty *svp, const char *fmt, ...)
{
        int i;

        xmlv1();
        printf ("<setSwitchVector\n");
        printf ("  device='%s'\n", svp->device);
        printf ("  name='%s'\n", svp->name);
        printf ("  state='%s'\n", pstateStr(svp->s));
        printf ("  timeout='%g'\n", svp->timeout);
        printf ("  timestamp='%s'\n", timestamp());
        if (fmt) {
            va_list ap;
            va_start (ap, fmt);
            printf ("  message='");
            vprintf (fmt, ap);
            printf ("'\n");
            va_end (ap);
        }
        printf (">\n");

        for (i = 0; i < svp->nsp; i++) {
            ISwitch *sp = &svp->sp[i];
            printf ("  <oneSwitch name='%s'>\n", sp->name);
            printf ("      %s\n", sstateStr(sp->s));
            printf ("  </oneSwitch>\n");
        }

        printf ("</setSwitchVector>\n");
        fflush (stdout);
}

/* tell client to update an existing lights vector property */
void
IDSetLight (const ILightVectorProperty *lvp, const char *fmt, ...)
{
        int i;

        xmlv1();
        printf ("<setLightVector\n");
        printf ("  device='%s'\n", lvp->device);
        printf ("  name='%s'\n", lvp->name);
        printf ("  state='%s'\n", pstateStr(lvp->s));
        printf ("  timestamp='%s'\n", timestamp());
        if (fmt) {
            va_list ap;
            va_start (ap, fmt);
            printf ("  message='");
            vprintf (fmt, ap);
            printf ("'\n");
            va_end (ap);
        }
        printf (">\n");

        for (i = 0; i < lvp->nlp; i++) {
            ILight *lp = &lvp->lp[i];
            printf ("  <oneLight name='%s'>\n", lp->name);
            printf ("      %s\n", pstateStr(lp->s));
            printf ("  </oneLight>\n");
        }

        printf ("</setLightVector>\n");
        fflush (stdout);
}

/* tell client to update an existing BLOB vector property */
void
IDSetBLOB (const IBLOBVectorProperty *bvp, const char *fmt, ...)
{
        int i;

        xmlv1();
        printf ("<setBLOBVector\n");
        printf ("  device='%s'\n", bvp->device);
        printf ("  name='%s'\n", bvp->name);
        printf ("  state='%s'\n", pstateStr(bvp->s));
        printf ("  timeout='%g'\n", bvp->timeout);
        printf ("  timestamp='%s'\n", timestamp());
        if (fmt) {
            va_list ap;
            va_start (ap, fmt);
            printf ("  message='");
            vprintf (fmt, ap);
            printf ("'\n");
            va_end (ap);
        }
        printf (">\n");

        for (i = 0; i < bvp->nbp; i++) {
            IBLOB *bp = &bvp->bp[i];
            unsigned char *encblob;
            int j, l;

            printf ("  <oneBLOB\n");
            printf ("    name='%s'\n", bp->name);
            printf ("    size='%d'\n", bp->size);
            printf ("    format='%s'>\n", bp->format);

            encblob = malloc (4*bp->bloblen/3+4);
            l = to64frombits(encblob, bp->blob, bp->bloblen);
            for (j = 0; j < l; j += 72)
                printf ("%.72s\n", encblob+j);
            free (encblob);

            printf ("  </oneBLOB>\n");
        }

  printf ("</setBLOBVector>\n");
  fflush (stdout);
}

/* tell client to update min/max elements of an existing number vector property */
void IUUpdateMinMax(const INumberVectorProperty *nvp)
{
  int i;

  xmlv1();
  printf ("<setNumberVector\n");
  printf ("  device='%s'\n", nvp->device);
  printf ("  name='%s'\n", nvp->name);
  printf ("  state='%s'\n", pstateStr(nvp->s));
  printf ("  timeout='%g'\n", nvp->timeout);
  printf ("  timestamp='%s'\n", timestamp());
  printf (">\n");

  for (i = 0; i < nvp->nnp; i++) {
    INumber *np = &nvp->np[i];
    printf ("  <oneNumber name='%s'\n", np->name);
    printf ("    min='%g'\n", np->min);
    printf ("    max='%g'\n", np->max);
    printf ("    step='%g'\n", np->step);
    printf(">\n");
    printf ("      %g\n", np->value);
    printf ("  </oneNumber>\n");
  }

  printf ("</setNumberVector>\n");
  fflush (stdout);
}

/* Return 1 is property is already cached, 0 otherwise */
int isPropDefined(const char *property_name)
{
  int i=0;

  for (i=0; i < nroCheck; i++)
    if (!strcmp(property_name, roCheck[i].propName))
        return 1;

  return 0;

}