EV-ADNS/ADNS.xs

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

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

#include "EVAPI.h"

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 int outstanding;

static void
outstanding_inc (adns_state ads)
{
  if (!outstanding++)
    ev_prepare_start (EV_DEFAULT, &pw);
}

static void
outstanding_dec (adns_state ads)
{
  --outstanding;
}

struct ctx
{
  SV *self;
  adns_state ads;
  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; outstanding_dec (ads);
      SvREFCNT_dec (c->self);

      assert (cb);

      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_addr:
                sv = newSVpv (inet_ntoa (a->rrs.addr [i].addr.inet.sin_addr), 0);
                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:
                sv = &PL_sv_undef; /* not supported */
                break;
            }

          PUSHs (sv_2mortal (sv));
        }

      free (a);

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

      if (SvTRUE (ERRSV))
        warn ("%s", SvPV_nolen (ERRSV));

      SvREFCNT_dec (cb);
    }
}

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_timer_stop (EV_A, &tw);

  if (ev_is_active (&iw))
    ev_idle_stop (EV_A, &iw);

  for (i = 0; i < nfd; ++i)
    ev_io_stop (EV_A, iow + i);

  process (ads);

  if (!outstanding)
    {
      ev_prepare_stop (EV_A, w);
      return;
    }

  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);

  // create one ev_io per pollfd
  for (i = 0; i < nfd; ++i)
    {
      ev_io *w = iow + i;

      ev_io_init (w, io_cb, fds [i].fd,
        ((fds [i].events & POLLIN ? EV_READ : 0)
         | (fds [i].events & POLLOUT ? EV_WRITE : 0)));

      w->data = (void *)ads;
      ev_io_start (EV_A, w);
    }
}

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_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);

        outstanding_inc (ads);

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

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

            if (!ev_is_active (&iw))
              ev_idle_start (EV_DEFAULT, &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)
          {
            SvREFCNT_dec (c->cb);
            c->cb = 0; outstanding_dec (c->ads);
            adns_cancel (c->query);
            SvREFCNT_dec (c->self);
          }
}


Revision:	1.17
Committed:	Sat May 17 20:37:17 2008 UTC (18 years, 4 months ago) by root
Branch:	MAIN
CVS Tags:	rel-2_1
Changes since 1.16:	+4 -1 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	root	1.15	static struct pollfd *fds;
11			static int nfd, mfd;
12			static ev_io *iow;
13			static ev_timer tw;
14			static ev_idle iw;
15			static ev_prepare pw;
16			static struct timeval tv_now;
17			static int outstanding;
18
19			static void
20			outstanding_inc (adns_state ads)
21			{
22			if (!outstanding++)
23	root	1.16	ev_prepare_start (EV_DEFAULT, &pw);
24	root	1.15	}
25
26			static void
27			outstanding_dec (adns_state ads)
28			{
29			--outstanding;
30			}
31
32	root	1.1	struct ctx
33			{
34	root	1.2	SV *self;
35	root	1.15	adns_state ads;
36	root	1.2	adns_query query;
37	root	1.1	SV *cb;
38			};
39
40	root	1.6	static SV *
41			ha2sv (adns_rr_hostaddr *rr)
42			{
43			AV *av = newAV ();
44			av_push (av, newSVpv (rr->host, 0));
45			// TODO: add addresses
46
47			return newRV_noinc ((SV *)av);
48			}
49
50	root	1.1	static void
51	root	1.12	process (adns_state ads)
52	root	1.1	{
53	root	1.3	dSP;
54
55	root	1.1	for (;;)
56			{
57	root	1.6	int i;
58	root	1.4	adns_query q = 0;
59	root	1.1	adns_answer *a;
60	root	1.3	void *ctx;
61			SV *cb;
62			struct ctx *c;
63			int r = adns_check (ads, &q, &a, &ctx);
64	root	1.1
65			if (r)
66			break;
67	root	1.3
68			c = (struct ctx *)ctx;
69			cb = c->cb;
70	root	1.15	c->cb = 0; outstanding_dec (ads);
71	root	1.6	SvREFCNT_dec (c->self);
72	root	1.3
73	root	1.15	assert (cb);
74
75	root	1.5	PUSHMARK (SP);
76
77	root	1.6	EXTEND (SP, a->nrrs + 2);
78			PUSHs (sv_2mortal (newSViv (a->status)));
79			PUSHs (sv_2mortal (newSViv (a->expires)));
80
81			for (i = 0; i < a->nrrs; ++i)
82			{
83			SV *sv;
84
85			switch (a->type & adns_r_unknown ? adns_r_unknown : a->type)
86			{
87			case adns_r_ns_raw:
88			case adns_r_cname:
89			case adns_r_ptr:
90			case adns_r_ptr_raw:
91			sv = newSVpv (a->rrs.str [i], 0);
92			break;
93
94			case adns_r_txt:
95	root	1.8	{
96			AV *av = newAV ();
97			adns_rr_intstr *rr = a->rrs.manyistr [i];
98
99			while (rr->str)
100			{
101			av_push (av, newSVpvn (rr->str, rr->i));
102			++rr;
103			}
104
105			sv = newRV_noinc ((SV *)av);
106			}
107	root	1.6	break;
108
109	root	1.17	case adns_r_addr:
110			sv = newSVpv (inet_ntoa (a->rrs.addr [i].addr.inet.sin_addr), 0);
111			break;
112
113	root	1.6	case adns_r_a:
114			sv = newSVpv (inet_ntoa (a->rrs.inaddr [i]), 0);
115			break;
116
117			case adns_r_ns:
118			sv = ha2sv (a->rrs.hostaddr + i);
119			break;
120
121			case adns_r_hinfo:
122			{
123			/* untested */
124			AV *av = newAV ();
125			adns_rr_intstrpair *rr = a->rrs.intstrpair + i;
126
127			av_push (av, newSVpvn (rr->array [0].str, rr->array [0].i));
128			av_push (av, newSVpvn (rr->array [1].str, rr->array [1].i));
129	root	1.8
130			sv = newRV_noinc ((SV *)av);
131	root	1.6	}
132			break;
133
134			case adns_r_rp:
135			case adns_r_rp_raw:
136			{
137			/* untested */
138			AV *av = newAV ();
139			adns_rr_strpair *rr = a->rrs.strpair + i;
140
141			av_push (av, newSVpv (rr->array [0], 0));
142			av_push (av, newSVpv (rr->array [1], 0));
143	root	1.8
144			sv = newRV_noinc ((SV *)av);
145	root	1.6	}
146			break;
147
148			case adns_r_mx:
149			{
150			AV *av = newAV ();
151			adns_rr_inthostaddr *rr = a->rrs.inthostaddr + i;
152
153			av_push (av, newSViv (rr->i));
154			av_push (av, ha2sv (&rr->ha));
155	root	1.8
156			sv = newRV_noinc ((SV *)av);
157	root	1.6	}
158			break;
159
160			case adns_r_mx_raw:
161			{
162			AV *av = newAV ();
163			adns_rr_intstr *rr = a->rrs.intstr + i;
164
165			av_push (av, newSViv (rr->i));
166			av_push (av, newSVpv (rr->str, 0));
167	root	1.8
168			sv = newRV_noinc ((SV *)av);
169	root	1.6	}
170			break;
171
172			case adns_r_soa:
173			case adns_r_soa_raw:
174			{
175			AV *av = newAV ();
176			adns_rr_soa *rr = a->rrs.soa + i;
177
178			av_push (av, newSVpv (rr->mname, 0));
179			av_push (av, newSVpv (rr->rname, 0));
180			av_push (av, newSVuv (rr->serial));
181			av_push (av, newSVuv (rr->refresh));
182			av_push (av, newSVuv (rr->retry));
183			av_push (av, newSVuv (rr->expire));
184			av_push (av, newSVuv (rr->minimum));
185	root	1.8
186			sv = newRV_noinc ((SV *)av);
187	root	1.6	}
188			break;
189
190			case adns_r_srv_raw:
191			{
192			AV *av = newAV ();
193			adns_rr_srvraw *rr = a->rrs.srvraw + i;
194
195			av_push (av, newSViv (rr->priority));
196			av_push (av, newSViv (rr->weight));
197			av_push (av, newSViv (rr->port));
198			av_push (av, newSVpv (rr->host, 0));
199	root	1.8
200			sv = newRV_noinc ((SV *)av);
201	root	1.6	}
202			break;
203
204			case adns_r_srv:
205			{
206			AV *av = newAV ();
207			adns_rr_srvha *rr = a->rrs.srvha + i;
208
209			av_push (av, newSViv (rr->priority));
210			av_push (av, newSViv (rr->weight));
211			av_push (av, newSViv (rr->port));
212			av_push (av, ha2sv (&rr->ha));
213	root	1.8
214			sv = newRV_noinc ((SV *)av);
215	root	1.6	}
216			break;
217
218			case adns_r_unknown:
219			sv = newSVpvn (a->rrs.byteblock [i].data, a->rrs.byteblock [i].len);
220			break;
221
222			default:
223			sv = &PL_sv_undef; /* not supported */
224			break;
225			}
226
227			PUSHs (sv_2mortal (sv));
228			}
229
230	root	1.4	free (a);
231
232			PUTBACK;
233	root	1.5	call_sv (cb, G_VOID \| G_DISCARD \| G_EVAL);
234	root	1.4	SPAGAIN;
235	root	1.3
236	root	1.15	if (SvTRUE (ERRSV))
237			warn ("%s", SvPV_nolen (ERRSV));
238
239	root	1.3	SvREFCNT_dec (cb);
240	root	1.1	}
241			}
242
243			static void
244			update_now (EV_P)
245			{
246	root	1.13	ev_tstamp t = ev_now (EV_A);
247	root	1.1
248	root	1.2	tv_now.tv_sec = (long)t;
249	root	1.10	tv_now.tv_usec = (long)((t - (ev_tstamp)tv_now.tv_sec) * 1e6);
250	root	1.1	}
251
252			static void
253	root	1.9	idle_cb (EV_P_ ev_idle *w, int revents)
254			{
255	root	1.16	ev_idle_stop (EV_A, w);
256	root	1.9	}
257
258			static void
259	root	1.1	timer_cb (EV_P_ ev_timer *w, int revents)
260			{
261	root	1.12	adns_state ads = (adns_state)w->data;
262	root	1.13	update_now (EV_A);
263	root	1.10
264			adns_processtimeouts (ads, &tv_now);
265	root	1.1	}
266
267			static void
268			io_cb (EV_P_ ev_io *w, int revents)
269			{
270	root	1.12	adns_state ads = (adns_state)w->data;
271	root	1.1	update_now (EV_A);
272
273			if (revents & EV_READ ) adns_processreadable (ads, w->fd, &tv_now);
274			if (revents & EV_WRITE) adns_processwriteable (ads, w->fd, &tv_now);
275			}
276
277			// create io watchers for each fd and a timer before blocking
278			static void
279			prepare_cb (EV_P_ ev_prepare *w, int revents)
280			{
281			int i;
282			int timeout = 3600000;
283	root	1.12	adns_state ads = (adns_state)w->data;
284	root	1.1
285	root	1.6	if (ev_is_active (&tw))
286	root	1.16	ev_timer_stop (EV_A, &tw);
287	root	1.1
288	root	1.9	if (ev_is_active (&iw))
289	root	1.16	ev_idle_stop (EV_A, &iw);
290	root	1.9
291	root	1.1	for (i = 0; i < nfd; ++i)
292	root	1.16	ev_io_stop (EV_A, iow + i);
293	root	1.15
294			process (ads);
295
296			if (!outstanding)
297	root	1.6	{
298	root	1.16	ev_prepare_stop (EV_A, w);
299	root	1.15	return;
300	root	1.6	}
301	root	1.1
302			update_now (EV_A);
303
304	root	1.4	nfd = mfd;
305
306	root	1.1	while (adns_beforepoll (ads, fds, &nfd, &timeout, &tv_now))
307			{
308	root	1.4	mfd = nfd;
309
310	root	1.7	free (iow); iow = malloc (mfd * sizeof (ev_io));
311			free (fds); fds = malloc (mfd * sizeof (struct pollfd));
312	root	1.1	}
313
314			ev_timer_set (&tw, timeout * 1e-3, 0.);
315	root	1.16	ev_timer_start (EV_A, &tw);
316	root	1.1
317	root	1.4	// create one ev_io per pollfd
318	root	1.1	for (i = 0; i < nfd; ++i)
319			{
320	root	1.14	ev_io *w = iow + i;
321
322			ev_io_init (w, io_cb, fds [i].fd,
323	root	1.1	((fds [i].events & POLLIN ? EV_READ : 0)
324			\| (fds [i].events & POLLOUT ? EV_WRITE : 0)));
325
326	root	1.14	w->data = (void *)ads;
327	root	1.16	ev_io_start (EV_A, w);
328	root	1.1	}
329			}
330
331	root	1.12	static HV *stash;
332			static adns_state ads;
333
334	root	1.1	MODULE = EV::ADNS PACKAGE = EV::ADNS
335
336			PROTOTYPES: ENABLE
337
338			BOOT:
339			{
340	root	1.2	stash = gv_stashpv ("EV::ADNS", 1);
341	root	1.1
342			static const struct {
343			const char *name;
344			IV iv;
345			} *civ, const_iv[] = {
346	root	1.3	# define const_iv(name) { # name, (IV) adns_ ## name },
347	root	1.1	const_iv (if_none)
348			const_iv (if_noenv)
349			const_iv (if_noerrprint)
350			const_iv (if_noserverwarn)
351			const_iv (if_debug)
352			const_iv (if_logpid)
353			const_iv (if_noautosys)
354			const_iv (if_eintr)
355			const_iv (if_nosigpipe)
356			const_iv (if_checkc_entex)
357			const_iv (if_checkc_freq)
358
359			const_iv (qf_none)
360			const_iv (qf_search)
361			const_iv (qf_usevc)
362			const_iv (qf_owner)
363			const_iv (qf_quoteok_query)
364			const_iv (qf_quoteok_cname)
365			const_iv (qf_quoteok_anshost)
366			const_iv (qf_quotefail_cname)
367			const_iv (qf_cname_loose)
368			const_iv (qf_cname_forbid)
369
370			const_iv (rrt_typemask)
371			const_iv (_qtf_deref)
372			const_iv (_qtf_mail822)
373			const_iv (r_unknown)
374			const_iv (r_none)
375			const_iv (r_a)
376			const_iv (r_ns_raw)
377			const_iv (r_ns)
378			const_iv (r_cname)
379			const_iv (r_soa_raw)
380			const_iv (r_soa)
381			const_iv (r_ptr_raw)
382			const_iv (r_ptr)
383			const_iv (r_hinfo)
384			const_iv (r_mx_raw)
385			const_iv (r_mx)
386			const_iv (r_txt)
387			const_iv (r_rp_raw)
388			const_iv (r_rp)
389			const_iv (r_srv_raw)
390			const_iv (r_srv)
391			const_iv (r_addr)
392
393			const_iv (s_ok)
394			const_iv (s_nomemory)
395			const_iv (s_unknownrrtype)
396			const_iv (s_systemfail)
397			const_iv (s_max_localfail)
398			const_iv (s_timeout)
399			const_iv (s_allservfail)
400			const_iv (s_norecurse)
401			const_iv (s_invalidresponse)
402			const_iv (s_unknownformat)
403			const_iv (s_max_remotefail)
404			const_iv (s_rcodeservfail)
405			const_iv (s_rcodeformaterror)
406			const_iv (s_rcodenotimplemented)
407			const_iv (s_rcoderefused)
408			const_iv (s_rcodeunknown)
409			const_iv (s_max_tempfail)
410			const_iv (s_inconsistent)
411			const_iv (s_prohibitedcname)
412			const_iv (s_answerdomaininvalid)
413			const_iv (s_answerdomaintoolong)
414			const_iv (s_invaliddata)
415			const_iv (s_max_misconfig)
416			const_iv (s_querydomainwrong)
417			const_iv (s_querydomaininvalid)
418			const_iv (s_querydomaintoolong)
419			const_iv (s_max_misquery)
420			const_iv (s_nxdomain)
421			const_iv (s_nodata)
422			const_iv (s_max_permfail)
423			};
424
425			for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
426			newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
427
428			I_EV_API ("EV::ADNS");
429
430	root	1.12	adns_init (&ads, adns_if_noenv \| adns_if_noerrprint \| adns_if_noserverwarn \| adns_if_noautosys, 0);
431
432			ev_prepare_init (&pw, prepare_cb);
433			pw.data = (void *)ads;
434	root	1.1
435	root	1.11	ev_init (&iw, idle_cb); ev_set_priority (&iw, EV_MINPRI);
436	root	1.12	iw.data = (void *)ads;
437	root	1.1	ev_init (&tw, timer_cb);
438	root	1.12	tw.data = (void *)ads;
439	root	1.1	}
440
441	root	1.3	void submit (char owner, int type, int flags, SV cb)
442	root	1.2	PPCODE:
443	root	1.1	{
444	root	1.2	SV *csv = NEWSV (0, sizeof (struct ctx));
445			struct ctx c = (struct ctx )SvPVX (csv);
446			int r = adns_submit (ads, owner, type, flags, (void *)c, &c->query);
447	root	1.1
448	root	1.15	outstanding_inc (ads);
449
450	root	1.1	if (r)
451			{
452	root	1.2	SvREFCNT_dec (csv);
453	root	1.6	errno = r;
454	root	1.1	XSRETURN_EMPTY;
455			}
456	root	1.2	else
457			{
458			SvPOK_only (csv);
459			SvCUR_set (csv, sizeof (struct ctx));
460	root	1.6
461	root	1.2	c->self = csv;
462			c->cb = newSVsv (cb);
463	root	1.15	c->ads = ads;
464	root	1.2
465	root	1.9	if (!ev_is_active (&iw))
466	root	1.16	ev_idle_start (EV_DEFAULT, &iw);
467	root	1.9
468	root	1.2	if (GIMME_V != G_VOID)
469			{
470	root	1.5	csv = sv_2mortal (newRV_inc (csv));
471	root	1.2	sv_bless (csv, stash);
472			XPUSHs (csv);
473			}
474			}
475	root	1.1	}
476
477	root	1.2	void DESTROY (SV *req)
478	root	1.6	ALIAS:
479			cancel = 1
480	root	1.2	CODE:
481			{
482			struct ctx *c;
483
484			if (!(SvROK (req) && SvOBJECT (SvRV (req))
485			&& (SvSTASH (SvRV (req)) == stash)))
486			croak ("object is not of type EV::ADNS");
487
488			c = (struct ctx *)SvPVX (SvRV (req));
489
490			if (c->cb)
491			{
492	root	1.6	SvREFCNT_dec (c->cb);
493	root	1.15	c->cb = 0; outstanding_dec (c->ads);
494	root	1.2	adns_cancel (c->query);
495	root	1.6	SvREFCNT_dec (c->self);
496	root	1.2	}
497			}
498
499
500	root	1.1
501