// Copyright status: this file is in the public domain.

#include <stdlib.h>

#include "lx.h"

#include "proto.h"
#include "internal.h"

typedef struct priv_ListProperties PRIV_ListProperties;

struct priv_ListProperties {
  LX_XIDLIST **listp;
  } ;

static void done_ListProperties(LX_CONN *xc, const unsigned char *rep, void *pv)
{
 PRIV_ListProperties *p;
 LX_XIDLIST *xl;
 int n;
 int i;

 p = pv;
 do <"ret">
  { n = r_card16(rep+8);
    if (r_card32(rep+4) != n)
     { lx__protoerr(xc,"ListProperties response length wrong (%u, expecting %d)",r_card32(rep+4),n);
       break <"ret">;
     }
    if (p->listp)
     { do <"good">
	{ do <"mem">
	   { xl = malloc(sizeof(LX_XIDLIST));
	     if (! xl) break <"mem">;
	     xl->len = n;
	     xl->ids = malloc(n*sizeof(LX_XID));
	     if (! xl->ids) break <"mem">;
	     for (i=n-1;i>=0;i--) xl->ids[i] = r_card32(rep+32+(4*i));
	     *p->listp = xl;
	     break <"good">;
	   } while (0);
	  lx__nomem_fail(xc);
	  if (xl)
	   { free(xl->ids);
	     free(xl);
	   }
	  break <"ret">;
	} while (0);
     }
  } while (0);
 free(p);
}

LX_OP *lx_ListProperties(LX_CONN *xc, LX_XID window, LX_XIDLIST **listp)
{
 unsigned char req[8];
 PRIV_ListProperties *p;

 if (xc->flags & XCF_FAIL)
  { lx__bad_call(xc,"lx_ListProperties");
    return(0);
  }
 lx__nochain(xc);
 p = malloc(sizeof(PRIV_ListProperties));
 if (! p)
  { lx__nomem_fail(xc);
    return(0);
  }
 p->listp = listp;
 req[0] = XP_REQ_ListProperties;
 req[1] = 0;
 w_card16(&req[2],2);
 w_card32(&req[4],window);
 return(lx__expect_reply(xc,&req[0],-1,&done_ListProperties,p));
}