EV-ADNS/ADNS.xs

#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"

#include <poll.h>
#include <adns.h>

#include "EVAPI.h"

struct ctx
{
  SV *self;
  adns_query query;
  SV *cb;
};

static SV *
ha2sv (adns_rr_hostaddr *rr)
{
  AV *av = newAV ();
  av_push (av, newSVpv (rr->host, 0));
  // TODO: add addresses

  return newRV_noinc ((SV *)av);
}

static void
process (adns_state ads)
{
  dSP;

  for (;;)
    {
      int i;
      adns_query q = 0;
      adns_answer *a;
      void *ctx;
      SV *cb;
      struct ctx *c;
      int r = adns_check (ads, &q, &a, &ctx);
      
      if (r)
        break;

      c = (struct ctx *)ctx;
      cb = c->cb;
      c->cb = 0;
      ev_unref (EV_A);
      SvREFCNT_dec (c->self);

      PUSHMARK (SP);

      EXTEND (SP, a->nrrs + 2);
      PUSHs (sv_2mortal (newSViv (a->status)));
      PUSHs (sv_2mortal (newSViv (a->expires)));

      for (i = 0; i < a->nrrs; ++i)
        {
          SV *sv;

          switch (a->type & adns_r_unknown ? adns_r_unknown : a->type)
            {
              case adns_r_ns_raw:
              case adns_r_cname:
              case adns_r_ptr:
              case adns_r_ptr_raw:
                sv = newSVpv (a->rrs.str [i], 0);
                break;

              case adns_r_txt:
                {
                  AV *av = newAV ();
                  adns_rr_intstr *rr = a->rrs.manyistr [i];

                  while (rr->str)
                    {
                      av_push (av, newSVpvn (rr->str, rr->i));
                      ++rr;
                    }

                  sv = newRV_noinc ((SV *)av);
                }
                break;

              case adns_r_a:
                sv = newSVpv (inet_ntoa (a->rrs.inaddr [i]), 0);
                break;

              case adns_r_ns:
                sv = ha2sv (a->rrs.hostaddr + i);
                break;

              case adns_r_hinfo:
                {
                  /* untested */
                  AV *av = newAV ();
                  adns_rr_intstrpair *rr = a->rrs.intstrpair + i;

                  av_push (av, newSVpvn (rr->array [0].str, rr->array [0].i));
                  av_push (av, newSVpvn (rr->array [1].str, rr->array [1].i));

                  sv = newRV_noinc ((SV *)av);
                }
                break;

              case adns_r_rp:
              case adns_r_rp_raw:
                {
                  /* untested */
                  AV *av = newAV ();
                  adns_rr_strpair *rr = a->rrs.strpair + i;

                  av_push (av, newSVpv (rr->array [0], 0));
                  av_push (av, newSVpv (rr->array [1], 0));

                  sv = newRV_noinc ((SV *)av);
                }
                break;

              case adns_r_mx:
                {
                  AV *av = newAV ();
                  adns_rr_inthostaddr *rr = a->rrs.inthostaddr + i;

                  av_push (av, newSViv (rr->i));
                  av_push (av, ha2sv (&rr->ha));

                  sv = newRV_noinc ((SV *)av);
                }
                break;

              case adns_r_mx_raw:
                {
                  AV *av = newAV ();
                  adns_rr_intstr *rr = a->rrs.intstr + i;

                  av_push (av, newSViv (rr->i));
                  av_push (av, newSVpv (rr->str, 0));

                  sv = newRV_noinc ((SV *)av);
                }
                break;

              case adns_r_soa:
              case adns_r_soa_raw:
                {
                  AV *av = newAV ();
                  adns_rr_soa *rr = a->rrs.soa + i;

                  av_push (av, newSVpv (rr->mname, 0));
                  av_push (av, newSVpv (rr->rname, 0));
                  av_push (av, newSVuv (rr->serial));
                  av_push (av, newSVuv (rr->refresh));
                  av_push (av, newSVuv (rr->retry));
                  av_push (av, newSVuv (rr->expire));
                  av_push (av, newSVuv (rr->minimum));

                  sv = newRV_noinc ((SV *)av);
                }
                break;

              case adns_r_srv_raw:
                {
                  AV *av = newAV ();
                  adns_rr_srvraw *rr = a->rrs.srvraw + i;

                  av_push (av, newSViv (rr->priority));
                  av_push (av, newSViv (rr->weight));
                  av_push (av, newSViv (rr->port));
                  av_push (av, newSVpv (rr->host, 0));

                  sv = newRV_noinc ((SV *)av);
                }
                break;

              case adns_r_srv:
                {
                  AV *av = newAV ();
                  adns_rr_srvha *rr = a->rrs.srvha + i;

                  av_push (av, newSViv (rr->priority));
                  av_push (av, newSViv (rr->weight));
                  av_push (av, newSViv (rr->port));
                  av_push (av, ha2sv (&rr->ha));

                  sv = newRV_noinc ((SV *)av);
                }
                break;

              case adns_r_unknown:
                sv = newSVpvn (a->rrs.byteblock [i].data, a->rrs.byteblock [i].len);
                break;

              default:
              case adns_r_addr:
                sv = &PL_sv_undef; /* not supported */
                break;
            }

          PUSHs (sv_2mortal (sv));
        }

      free (a);

      PUTBACK;
      call_sv (cb, G_VOID | G_DISCARD | G_EVAL);
      SPAGAIN;

      SvREFCNT_dec (cb);
    }
}

static struct pollfd *fds;
static int nfd, mfd;
static ev_io *iow;
static ev_timer tw;
static ev_idle iw;
static ev_prepare pw;
static struct timeval tv_now;

static void
update_now (EV_P)
{
  ev_tstamp t = ev_now (EV_A);

  tv_now.tv_sec  = (long)t;
  tv_now.tv_usec = (long)((t - (ev_tstamp)tv_now.tv_sec) * 1e6);
}

static void
idle_cb (EV_P_ ev_idle *w, int revents)
{
  ev_idle_stop (EV_A_ w);
}

static void
timer_cb (EV_P_ ev_timer *w, int revents)
{
  adns_state ads = (adns_state)w->data;
  update_now (EV_A);

  adns_processtimeouts (ads, &tv_now);
}

static void
io_cb (EV_P_ ev_io *w, int revents)
{
  adns_state ads = (adns_state)w->data;
  update_now (EV_A);

  if (revents & EV_READ ) adns_processreadable  (ads, w->fd, &tv_now);
  if (revents & EV_WRITE) adns_processwriteable (ads, w->fd, &tv_now);
}

// create io watchers for each fd and a timer before blocking
static void
prepare_cb (EV_P_ ev_prepare *w, int revents)
{
  int i;
  int timeout = 3600000;
  adns_state ads = (adns_state)w->data;

  if (ev_is_active (&tw))
    {
      ev_ref (EV_A);
      ev_timer_stop (EV_A_ &tw);
    }

  if (ev_is_active (&iw))
    ev_idle_stop (EV_A_ &iw);

  for (i = 0; i < nfd; ++i)
    {
      ev_ref (EV_A);
      ev_io_stop (EV_A_ iow + i);
    }

  process (ads);
  update_now (EV_A);

  nfd = mfd;

  while (adns_beforepoll (ads, fds, &nfd, &timeout, &tv_now))
    {
      mfd = nfd;

      free (iow); iow = malloc (mfd * sizeof (ev_io));
      free (fds); fds = malloc (mfd * sizeof (struct pollfd));
    }

  ev_timer_set (&tw, timeout * 1e-3, 0.);
  ev_timer_start (EV_A_ &tw);
  ev_unref (EV_A);

  // create one ev_io per pollfd
  for (i = 0; i < nfd; ++i)
    {
      ev_io_init (iow + i, io_cb, fds [i].fd,
        ((fds [i].events & POLLIN ? EV_READ : 0)
         | (fds [i].events & POLLOUT ? EV_WRITE : 0)));

      ev_io_start (EV_A_ iow + i);
      ev_unref (EV_A);
    }
}

static HV *stash;
static adns_state ads;

MODULE = EV::ADNS                PACKAGE = EV::ADNS

PROTOTYPES: ENABLE

BOOT:
{
  stash = gv_stashpv ("EV::ADNS", 1);

  static const struct {
    const char *name;
    IV iv;
  } *civ, const_iv[] = {
#   define const_iv(name) { # name, (IV) adns_ ## name },
    const_iv (if_none)
    const_iv (if_noenv)
    const_iv (if_noerrprint)
    const_iv (if_noserverwarn)
    const_iv (if_debug)
    const_iv (if_logpid)
    const_iv (if_noautosys)
    const_iv (if_eintr)
    const_iv (if_nosigpipe)
    const_iv (if_checkc_entex)
    const_iv (if_checkc_freq)

    const_iv (qf_none)
    const_iv (qf_search)
    const_iv (qf_usevc)
    const_iv (qf_owner)
    const_iv (qf_quoteok_query)
    const_iv (qf_quoteok_cname)
    const_iv (qf_quoteok_anshost)
    const_iv (qf_quotefail_cname)
    const_iv (qf_cname_loose)
    const_iv (qf_cname_forbid)

    const_iv (rrt_typemask)
    const_iv (_qtf_deref)
    const_iv (_qtf_mail822)
    const_iv (r_unknown)
    const_iv (r_none)
    const_iv (r_a)
    const_iv (r_ns_raw)
    const_iv (r_ns)
    const_iv (r_cname)
    const_iv (r_soa_raw)
    const_iv (r_soa)
    const_iv (r_ptr_raw)
    const_iv (r_ptr)
    const_iv (r_hinfo)
    const_iv (r_mx_raw)
    const_iv (r_mx)
    const_iv (r_txt)
    const_iv (r_rp_raw)
    const_iv (r_rp)
    const_iv (r_srv_raw)
    const_iv (r_srv)
    const_iv (r_addr)

    const_iv (s_ok)
    const_iv (s_nomemory)
    const_iv (s_unknownrrtype)
    const_iv (s_systemfail)
    const_iv (s_max_localfail)
    const_iv (s_timeout)
    const_iv (s_allservfail)
    const_iv (s_norecurse)
    const_iv (s_invalidresponse)
    const_iv (s_unknownformat)
    const_iv (s_max_remotefail)
    const_iv (s_rcodeservfail)
    const_iv (s_rcodeformaterror)
    const_iv (s_rcodenotimplemented)
    const_iv (s_rcoderefused)
    const_iv (s_rcodeunknown)
    const_iv (s_max_tempfail)
    const_iv (s_inconsistent)
    const_iv (s_prohibitedcname)
    const_iv (s_answerdomaininvalid)
    const_iv (s_answerdomaintoolong)
    const_iv (s_invaliddata)
    const_iv (s_max_misconfig)
    const_iv (s_querydomainwrong)
    const_iv (s_querydomaininvalid)
    const_iv (s_querydomaintoolong)
    const_iv (s_max_misquery)
    const_iv (s_nxdomain)
    const_iv (s_nodata)
    const_iv (s_max_permfail)
  };

  for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
    newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));

  I_EV_API ("EV::ADNS");

  adns_init (&ads, adns_if_noenv | adns_if_noerrprint | adns_if_noserverwarn | adns_if_noautosys, 0);

  ev_prepare_init (&pw, prepare_cb);
  pw.data = (void *)ads;
  ev_prepare_start (EV_DEFAULT_ &pw);
  ev_unref (EV_A);

  ev_init (&iw, idle_cb); ev_set_priority (&iw, EV_MINPRI);
  iw.data = (void *)ads;
  ev_init (&tw, timer_cb);
  tw.data = (void *)ads;
}

void submit (char *owner, int type, int flags, SV *cb)
        PPCODE:
{
        SV *csv = NEWSV (0, sizeof (struct ctx));
        struct ctx *c = (struct ctx *)SvPVX (csv);
        int r = adns_submit (ads, owner, type, flags, (void *)c, &c->query);

        if (r)
          {
            SvREFCNT_dec (csv);
            errno = r;
            XSRETURN_EMPTY;
          }
        else
          {
            ev_ref (EV_A);
            SvPOK_only (csv);
            SvCUR_set (csv, sizeof (struct ctx));

            c->self = csv;
            c->cb   = newSVsv (cb);

            if (!ev_is_active (&iw))
              ev_idle_start (EV_A_ &iw);

            if (GIMME_V != G_VOID)
              {
                csv = sv_2mortal (newRV_inc (csv));
                sv_bless (csv, stash);
                XPUSHs (csv);
              }
          }
}

void DESTROY (SV *req)
        ALIAS:
        cancel = 1
        CODE:
{
        struct ctx *c;

        if (!(SvROK (req) && SvOBJECT (SvRV (req))
              && (SvSTASH (SvRV (req)) == stash)))
          croak ("object is not of type EV::ADNS");
        
        c = (struct ctx *)SvPVX (SvRV (req));

        if (c->cb)
          {
            ev_unref (EV_A);
            SvREFCNT_dec (c->cb);
            c->cb = 0;
            adns_cancel (c->query);
            SvREFCNT_dec (c->self);
          }
}


Revision:	1.13
Committed:	Sat Dec 8 02:58:38 2007 UTC (18 years, 9 months ago) by root
Branch:	MAIN
Changes since 1.12:	+10 -10 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	#include "EXTERN.h"
2			#include "perl.h"
3			#include "XSUB.h"
4
5			#include <poll.h>
6			#include <adns.h>
7
8			#include "EVAPI.h"
9
10			struct ctx
11			{
12	root	1.2	SV *self;
13			adns_query query;
14	root	1.1	SV *cb;
15			};
16
17	root	1.6	static SV *
18			ha2sv (adns_rr_hostaddr *rr)
19			{
20			AV *av = newAV ();
21			av_push (av, newSVpv (rr->host, 0));
22			// TODO: add addresses
23
24			return newRV_noinc ((SV *)av);
25			}
26
27	root	1.1	static void
28	root	1.12	process (adns_state ads)
29	root	1.1	{
30	root	1.3	dSP;
31
32	root	1.1	for (;;)
33			{
34	root	1.6	int i;
35	root	1.4	adns_query q = 0;
36	root	1.1	adns_answer *a;
37	root	1.3	void *ctx;
38			SV *cb;
39			struct ctx *c;
40			int r = adns_check (ads, &q, &a, &ctx);
41	root	1.1
42			if (r)
43			break;
44	root	1.3
45			c = (struct ctx *)ctx;
46			cb = c->cb;
47			c->cb = 0;
48	root	1.13	ev_unref (EV_A);
49	root	1.6	SvREFCNT_dec (c->self);
50	root	1.3
51	root	1.5	PUSHMARK (SP);
52
53	root	1.6	EXTEND (SP, a->nrrs + 2);
54			PUSHs (sv_2mortal (newSViv (a->status)));
55			PUSHs (sv_2mortal (newSViv (a->expires)));
56
57			for (i = 0; i < a->nrrs; ++i)
58			{
59			SV *sv;
60
61			switch (a->type & adns_r_unknown ? adns_r_unknown : a->type)
62			{
63			case adns_r_ns_raw:
64			case adns_r_cname:
65			case adns_r_ptr:
66			case adns_r_ptr_raw:
67			sv = newSVpv (a->rrs.str [i], 0);
68			break;
69
70			case adns_r_txt:
71	root	1.8	{
72			AV *av = newAV ();
73			adns_rr_intstr *rr = a->rrs.manyistr [i];
74
75			while (rr->str)
76			{
77			av_push (av, newSVpvn (rr->str, rr->i));
78			++rr;
79			}
80
81			sv = newRV_noinc ((SV *)av);
82			}
83	root	1.6	break;
84
85			case adns_r_a:
86			sv = newSVpv (inet_ntoa (a->rrs.inaddr [i]), 0);
87			break;
88
89			case adns_r_ns:
90			sv = ha2sv (a->rrs.hostaddr + i);
91			break;
92
93			case adns_r_hinfo:
94			{
95			/* untested */
96			AV *av = newAV ();
97			adns_rr_intstrpair *rr = a->rrs.intstrpair + i;
98
99			av_push (av, newSVpvn (rr->array [0].str, rr->array [0].i));
100			av_push (av, newSVpvn (rr->array [1].str, rr->array [1].i));
101	root	1.8
102			sv = newRV_noinc ((SV *)av);
103	root	1.6	}
104			break;
105
106			case adns_r_rp:
107			case adns_r_rp_raw:
108			{
109			/* untested */
110			AV *av = newAV ();
111			adns_rr_strpair *rr = a->rrs.strpair + i;
112
113			av_push (av, newSVpv (rr->array [0], 0));
114			av_push (av, newSVpv (rr->array [1], 0));
115	root	1.8
116			sv = newRV_noinc ((SV *)av);
117	root	1.6	}
118			break;
119
120			case adns_r_mx:
121			{
122			AV *av = newAV ();
123			adns_rr_inthostaddr *rr = a->rrs.inthostaddr + i;
124
125			av_push (av, newSViv (rr->i));
126			av_push (av, ha2sv (&rr->ha));
127	root	1.8
128			sv = newRV_noinc ((SV *)av);
129	root	1.6	}
130			break;
131
132			case adns_r_mx_raw:
133			{
134			AV *av = newAV ();
135			adns_rr_intstr *rr = a->rrs.intstr + i;
136
137			av_push (av, newSViv (rr->i));
138			av_push (av, newSVpv (rr->str, 0));
139	root	1.8
140			sv = newRV_noinc ((SV *)av);
141	root	1.6	}
142			break;
143
144			case adns_r_soa:
145			case adns_r_soa_raw:
146			{
147			AV *av = newAV ();
148			adns_rr_soa *rr = a->rrs.soa + i;
149
150			av_push (av, newSVpv (rr->mname, 0));
151			av_push (av, newSVpv (rr->rname, 0));
152			av_push (av, newSVuv (rr->serial));
153			av_push (av, newSVuv (rr->refresh));
154			av_push (av, newSVuv (rr->retry));
155			av_push (av, newSVuv (rr->expire));
156			av_push (av, newSVuv (rr->minimum));
157	root	1.8
158			sv = newRV_noinc ((SV *)av);
159	root	1.6	}
160			break;
161
162			case adns_r_srv_raw:
163			{
164			AV *av = newAV ();
165			adns_rr_srvraw *rr = a->rrs.srvraw + i;
166
167			av_push (av, newSViv (rr->priority));
168			av_push (av, newSViv (rr->weight));
169			av_push (av, newSViv (rr->port));
170			av_push (av, newSVpv (rr->host, 0));
171	root	1.8
172			sv = newRV_noinc ((SV *)av);
173	root	1.6	}
174			break;
175
176			case adns_r_srv:
177			{
178			AV *av = newAV ();
179			adns_rr_srvha *rr = a->rrs.srvha + i;
180
181			av_push (av, newSViv (rr->priority));
182			av_push (av, newSViv (rr->weight));
183			av_push (av, newSViv (rr->port));
184			av_push (av, ha2sv (&rr->ha));
185	root	1.8
186			sv = newRV_noinc ((SV *)av);
187	root	1.6	}
188			break;
189
190			case adns_r_unknown:
191			sv = newSVpvn (a->rrs.byteblock [i].data, a->rrs.byteblock [i].len);
192			break;
193
194			default:
195			case adns_r_addr:
196			sv = &PL_sv_undef; /* not supported */
197			break;
198			}
199
200			PUSHs (sv_2mortal (sv));
201			}
202
203	root	1.4	free (a);
204
205			PUTBACK;
206	root	1.5	call_sv (cb, G_VOID \| G_DISCARD \| G_EVAL);
207	root	1.4	SPAGAIN;
208	root	1.3
209			SvREFCNT_dec (cb);
210	root	1.1	}
211			}
212
213			static struct pollfd *fds;
214	root	1.4	static int nfd, mfd;
215	root	1.1	static ev_io *iow;
216			static ev_timer tw;
217	root	1.9	static ev_idle iw;
218	root	1.12	static ev_prepare pw;
219	root	1.2	static struct timeval tv_now;
220	root	1.1
221			static void
222			update_now (EV_P)
223			{
224	root	1.13	ev_tstamp t = ev_now (EV_A);
225	root	1.1
226	root	1.2	tv_now.tv_sec = (long)t;
227	root	1.10	tv_now.tv_usec = (long)((t - (ev_tstamp)tv_now.tv_sec) * 1e6);
228	root	1.1	}
229
230			static void
231	root	1.9	idle_cb (EV_P_ ev_idle *w, int revents)
232			{
233			ev_idle_stop (EV_A_ w);
234			}
235
236			static void
237	root	1.1	timer_cb (EV_P_ ev_timer *w, int revents)
238			{
239	root	1.12	adns_state ads = (adns_state)w->data;
240	root	1.13	update_now (EV_A);
241	root	1.10
242			adns_processtimeouts (ads, &tv_now);
243	root	1.1	}
244
245			static void
246			io_cb (EV_P_ ev_io *w, int revents)
247			{
248	root	1.12	adns_state ads = (adns_state)w->data;
249	root	1.1	update_now (EV_A);
250
251			if (revents & EV_READ ) adns_processreadable (ads, w->fd, &tv_now);
252			if (revents & EV_WRITE) adns_processwriteable (ads, w->fd, &tv_now);
253			}
254
255			// create io watchers for each fd and a timer before blocking
256			static void
257			prepare_cb (EV_P_ ev_prepare *w, int revents)
258			{
259			int i;
260			int timeout = 3600000;
261	root	1.12	adns_state ads = (adns_state)w->data;
262	root	1.1
263	root	1.6	if (ev_is_active (&tw))
264			{
265	root	1.13	ev_ref (EV_A);
266	root	1.6	ev_timer_stop (EV_A_ &tw);
267			}
268	root	1.1
269	root	1.9	if (ev_is_active (&iw))
270			ev_idle_stop (EV_A_ &iw);
271
272	root	1.1	for (i = 0; i < nfd; ++i)
273	root	1.6	{
274	root	1.13	ev_ref (EV_A);
275	root	1.6	ev_io_stop (EV_A_ iow + i);
276			}
277	root	1.1
278	root	1.12	process (ads);
279	root	1.1	update_now (EV_A);
280
281	root	1.4	nfd = mfd;
282
283	root	1.1	while (adns_beforepoll (ads, fds, &nfd, &timeout, &tv_now))
284			{
285	root	1.4	mfd = nfd;
286
287	root	1.7	free (iow); iow = malloc (mfd * sizeof (ev_io));
288			free (fds); fds = malloc (mfd * sizeof (struct pollfd));
289	root	1.1	}
290
291			ev_timer_set (&tw, timeout * 1e-3, 0.);
292			ev_timer_start (EV_A_ &tw);
293	root	1.13	ev_unref (EV_A);
294	root	1.1
295	root	1.4	// create one ev_io per pollfd
296	root	1.1	for (i = 0; i < nfd; ++i)
297			{
298			ev_io_init (iow + i, io_cb, fds [i].fd,
299			((fds [i].events & POLLIN ? EV_READ : 0)
300			\| (fds [i].events & POLLOUT ? EV_WRITE : 0)));
301
302			ev_io_start (EV_A_ iow + i);
303	root	1.13	ev_unref (EV_A);
304	root	1.1	}
305			}
306
307	root	1.12	static HV *stash;
308			static adns_state ads;
309
310	root	1.1	MODULE = EV::ADNS PACKAGE = EV::ADNS
311
312			PROTOTYPES: ENABLE
313
314			BOOT:
315			{
316	root	1.2	stash = gv_stashpv ("EV::ADNS", 1);
317	root	1.1
318			static const struct {
319			const char *name;
320			IV iv;
321			} *civ, const_iv[] = {
322	root	1.3	# define const_iv(name) { # name, (IV) adns_ ## name },
323	root	1.1	const_iv (if_none)
324			const_iv (if_noenv)
325			const_iv (if_noerrprint)
326			const_iv (if_noserverwarn)
327			const_iv (if_debug)
328			const_iv (if_logpid)
329			const_iv (if_noautosys)
330			const_iv (if_eintr)
331			const_iv (if_nosigpipe)
332			const_iv (if_checkc_entex)
333			const_iv (if_checkc_freq)
334
335			const_iv (qf_none)
336			const_iv (qf_search)
337			const_iv (qf_usevc)
338			const_iv (qf_owner)
339			const_iv (qf_quoteok_query)
340			const_iv (qf_quoteok_cname)
341			const_iv (qf_quoteok_anshost)
342			const_iv (qf_quotefail_cname)
343			const_iv (qf_cname_loose)
344			const_iv (qf_cname_forbid)
345
346			const_iv (rrt_typemask)
347			const_iv (_qtf_deref)
348			const_iv (_qtf_mail822)
349			const_iv (r_unknown)
350			const_iv (r_none)
351			const_iv (r_a)
352			const_iv (r_ns_raw)
353			const_iv (r_ns)
354			const_iv (r_cname)
355			const_iv (r_soa_raw)
356			const_iv (r_soa)
357			const_iv (r_ptr_raw)
358			const_iv (r_ptr)
359			const_iv (r_hinfo)
360			const_iv (r_mx_raw)
361			const_iv (r_mx)
362			const_iv (r_txt)
363			const_iv (r_rp_raw)
364			const_iv (r_rp)
365			const_iv (r_srv_raw)
366			const_iv (r_srv)
367			const_iv (r_addr)
368
369			const_iv (s_ok)
370			const_iv (s_nomemory)
371			const_iv (s_unknownrrtype)
372			const_iv (s_systemfail)
373			const_iv (s_max_localfail)
374			const_iv (s_timeout)
375			const_iv (s_allservfail)
376			const_iv (s_norecurse)
377			const_iv (s_invalidresponse)
378			const_iv (s_unknownformat)
379			const_iv (s_max_remotefail)
380			const_iv (s_rcodeservfail)
381			const_iv (s_rcodeformaterror)
382			const_iv (s_rcodenotimplemented)
383			const_iv (s_rcoderefused)
384			const_iv (s_rcodeunknown)
385			const_iv (s_max_tempfail)
386			const_iv (s_inconsistent)
387			const_iv (s_prohibitedcname)
388			const_iv (s_answerdomaininvalid)
389			const_iv (s_answerdomaintoolong)
390			const_iv (s_invaliddata)
391			const_iv (s_max_misconfig)
392			const_iv (s_querydomainwrong)
393			const_iv (s_querydomaininvalid)
394			const_iv (s_querydomaintoolong)
395			const_iv (s_max_misquery)
396			const_iv (s_nxdomain)
397			const_iv (s_nodata)
398			const_iv (s_max_permfail)
399			};
400
401			for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
402			newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
403
404			I_EV_API ("EV::ADNS");
405
406	root	1.12	adns_init (&ads, adns_if_noenv \| adns_if_noerrprint \| adns_if_noserverwarn \| adns_if_noautosys, 0);
407
408			ev_prepare_init (&pw, prepare_cb);
409			pw.data = (void *)ads;
410			ev_prepare_start (EV_DEFAULT_ &pw);
411	root	1.13	ev_unref (EV_A);
412	root	1.1
413	root	1.11	ev_init (&iw, idle_cb); ev_set_priority (&iw, EV_MINPRI);
414	root	1.12	iw.data = (void *)ads;
415	root	1.1	ev_init (&tw, timer_cb);
416	root	1.12	tw.data = (void *)ads;
417	root	1.1	}
418
419	root	1.3	void submit (char owner, int type, int flags, SV cb)
420	root	1.2	PPCODE:
421	root	1.1	{
422	root	1.2	SV *csv = NEWSV (0, sizeof (struct ctx));
423			struct ctx c = (struct ctx )SvPVX (csv);
424			int r = adns_submit (ads, owner, type, flags, (void *)c, &c->query);
425	root	1.1
426			if (r)
427			{
428	root	1.2	SvREFCNT_dec (csv);
429	root	1.6	errno = r;
430	root	1.1	XSRETURN_EMPTY;
431			}
432	root	1.2	else
433			{
434	root	1.13	ev_ref (EV_A);
435	root	1.2	SvPOK_only (csv);
436			SvCUR_set (csv, sizeof (struct ctx));
437	root	1.6
438	root	1.2	c->self = csv;
439			c->cb = newSVsv (cb);
440
441	root	1.9	if (!ev_is_active (&iw))
442			ev_idle_start (EV_A_ &iw);
443
444	root	1.2	if (GIMME_V != G_VOID)
445			{
446	root	1.5	csv = sv_2mortal (newRV_inc (csv));
447	root	1.2	sv_bless (csv, stash);
448			XPUSHs (csv);
449			}
450			}
451	root	1.1	}
452
453	root	1.2	void DESTROY (SV *req)
454	root	1.6	ALIAS:
455			cancel = 1
456	root	1.2	CODE:
457			{
458			struct ctx *c;
459
460			if (!(SvROK (req) && SvOBJECT (SvRV (req))
461			&& (SvSTASH (SvRV (req)) == stash)))
462			croak ("object is not of type EV::ADNS");
463
464			c = (struct ctx *)SvPVX (SvRV (req));
465
466			if (c->cb)
467			{
468	root	1.13	ev_unref (EV_A);
469	root	1.6	SvREFCNT_dec (c->cb);
470			c->cb = 0;
471	root	1.2	adns_cancel (c->query);
472	root	1.6	SvREFCNT_dec (c->self);
473	root	1.2	}
474			}
475
476
477	root	1.1
478