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/*
* $Id: DNS.xs 639 2007-05-25 12:00:15Z olaf $
*
*
* Copyright (c) 2005 Olaf Kolkman
* Copyright (c) 2002-2003 Chris Reinhardt.
*
* All rights reserved. This program is free software; you may redistribute
* it and/or modify it under the same terms as Perl itself.
*
*
*/
#ifdef _HPUX_SOURCE
#define _SYS_MAGIC_INCLUDED
#endif
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include "netdns.h"
/*
* int netdns_dn_expand( char *msg, char *eomorig,
* char *comp_dn, char *exp_dn,
* int length);
*
*
* netdns_dn_expand
* netdns_dn_expand() expands the compressed domain name given by the
* pointer comp _dn into a full domain name.
*
* The compressed name is contained in
* a query or reply message; msg is a pointer to the beginning
* of that message. Expanded names are stored in the buffer
* referenced by the exp_dn buffer of size length , which should
* be large enough to hold the expanded result.
*
* netdns_dn_expand() returns the size of the compressed name, or -1
* if there was an error.
*/
MODULE = Net::DNS PACKAGE = Net::DNS::Packet
PROTOTYPES: DISABLE
void
dn_expand_XS(sv_buf, offset)
SV * sv_buf
int offset
PPCODE:
STRLEN len;
u_char * buf;
u_char name[MAXDNAME];
int pos;
if (SvROK(sv_buf))
sv_buf = SvRV(sv_buf);
buf = (u_char *) SvPV(sv_buf, len);
/* This is where we do the actual uncompressing magic. */
pos = netdns_dn_expand(buf, buf+len , buf+offset, &name[0], MAXDNAME);
EXTEND(SP, 2);
if (pos < 0) {
PUSHs(sv_2mortal(newSVsv(&PL_sv_undef)));
PUSHs(sv_2mortal(newSVsv(&PL_sv_undef)));
} else {
PUSHs(sv_2mortal(newSVpv((const char *)name, 0)));
PUSHs(sv_2mortal(newSViv(pos + offset)));
}
XSRETURN(2);
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