| 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 |
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 |
ev_prepare_start (EV_DEFAULT, &pw); |
| 24 |
} |
| 25 |
|
| 26 |
static void |
| 27 |
outstanding_dec (adns_state ads) |
| 28 |
{ |
| 29 |
--outstanding; |
| 30 |
} |
| 31 |
|
| 32 |
struct ctx |
| 33 |
{ |
| 34 |
SV *self; |
| 35 |
adns_state ads; |
| 36 |
adns_query query; |
| 37 |
SV *cb; |
| 38 |
}; |
| 39 |
|
| 40 |
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 |
static void |
| 51 |
process (adns_state ads) |
| 52 |
{ |
| 53 |
dSP; |
| 54 |
|
| 55 |
ENTER; |
| 56 |
SAVETMPS; |
| 57 |
|
| 58 |
for (;;) |
| 59 |
{ |
| 60 |
int i; |
| 61 |
adns_query q = 0; |
| 62 |
adns_answer *a; |
| 63 |
void *ctx; |
| 64 |
SV *cb; |
| 65 |
struct ctx *c; |
| 66 |
int r = adns_check (ads, &q, &a, &ctx); |
| 67 |
|
| 68 |
if (r) |
| 69 |
break; |
| 70 |
|
| 71 |
c = (struct ctx *)ctx; |
| 72 |
cb = c->cb; |
| 73 |
c->cb = 0; outstanding_dec (ads); |
| 74 |
SvREFCNT_dec (c->self); |
| 75 |
|
| 76 |
assert (cb); |
| 77 |
|
| 78 |
PUSHMARK (SP); |
| 79 |
|
| 80 |
EXTEND (SP, a->nrrs + 2); |
| 81 |
PUSHs (sv_2mortal (newSViv (a->status))); |
| 82 |
PUSHs (sv_2mortal (newSViv (a->expires))); |
| 83 |
|
| 84 |
for (i = 0; i < a->nrrs; ++i) |
| 85 |
{ |
| 86 |
SV *sv; |
| 87 |
|
| 88 |
switch (a->type & adns_r_unknown ? adns_r_unknown : a->type) |
| 89 |
{ |
| 90 |
case adns_r_ns_raw: |
| 91 |
case adns_r_cname: |
| 92 |
case adns_r_ptr: |
| 93 |
case adns_r_ptr_raw: |
| 94 |
sv = newSVpv (a->rrs.str [i], 0); |
| 95 |
break; |
| 96 |
|
| 97 |
case adns_r_txt: |
| 98 |
{ |
| 99 |
AV *av = newAV (); |
| 100 |
adns_rr_intstr *rr = a->rrs.manyistr [i]; |
| 101 |
|
| 102 |
while (rr->str) |
| 103 |
{ |
| 104 |
av_push (av, newSVpvn (rr->str, rr->i)); |
| 105 |
++rr; |
| 106 |
} |
| 107 |
|
| 108 |
sv = newRV_noinc ((SV *)av); |
| 109 |
} |
| 110 |
break; |
| 111 |
|
| 112 |
case adns_r_addr: |
| 113 |
sv = newSVpv (inet_ntoa (a->rrs.addr [i].addr.inet.sin_addr), 0); |
| 114 |
break; |
| 115 |
|
| 116 |
case adns_r_a: |
| 117 |
sv = newSVpv (inet_ntoa (a->rrs.inaddr [i]), 0); |
| 118 |
break; |
| 119 |
|
| 120 |
case adns_r_ns: |
| 121 |
sv = ha2sv (a->rrs.hostaddr + i); |
| 122 |
break; |
| 123 |
|
| 124 |
case adns_r_hinfo: |
| 125 |
{ |
| 126 |
/* untested */ |
| 127 |
AV *av = newAV (); |
| 128 |
adns_rr_intstrpair *rr = a->rrs.intstrpair + i; |
| 129 |
|
| 130 |
av_push (av, newSVpvn (rr->array [0].str, rr->array [0].i)); |
| 131 |
av_push (av, newSVpvn (rr->array [1].str, rr->array [1].i)); |
| 132 |
|
| 133 |
sv = newRV_noinc ((SV *)av); |
| 134 |
} |
| 135 |
break; |
| 136 |
|
| 137 |
case adns_r_rp: |
| 138 |
case adns_r_rp_raw: |
| 139 |
{ |
| 140 |
/* untested */ |
| 141 |
AV *av = newAV (); |
| 142 |
adns_rr_strpair *rr = a->rrs.strpair + i; |
| 143 |
|
| 144 |
av_push (av, newSVpv (rr->array [0], 0)); |
| 145 |
av_push (av, newSVpv (rr->array [1], 0)); |
| 146 |
|
| 147 |
sv = newRV_noinc ((SV *)av); |
| 148 |
} |
| 149 |
break; |
| 150 |
|
| 151 |
case adns_r_mx: |
| 152 |
{ |
| 153 |
AV *av = newAV (); |
| 154 |
adns_rr_inthostaddr *rr = a->rrs.inthostaddr + i; |
| 155 |
|
| 156 |
av_push (av, newSViv (rr->i)); |
| 157 |
av_push (av, ha2sv (&rr->ha)); |
| 158 |
|
| 159 |
sv = newRV_noinc ((SV *)av); |
| 160 |
} |
| 161 |
break; |
| 162 |
|
| 163 |
case adns_r_mx_raw: |
| 164 |
{ |
| 165 |
AV *av = newAV (); |
| 166 |
adns_rr_intstr *rr = a->rrs.intstr + i; |
| 167 |
|
| 168 |
av_push (av, newSViv (rr->i)); |
| 169 |
av_push (av, newSVpv (rr->str, 0)); |
| 170 |
|
| 171 |
sv = newRV_noinc ((SV *)av); |
| 172 |
} |
| 173 |
break; |
| 174 |
|
| 175 |
case adns_r_soa: |
| 176 |
case adns_r_soa_raw: |
| 177 |
{ |
| 178 |
AV *av = newAV (); |
| 179 |
adns_rr_soa *rr = a->rrs.soa + i; |
| 180 |
|
| 181 |
av_push (av, newSVpv (rr->mname, 0)); |
| 182 |
av_push (av, newSVpv (rr->rname, 0)); |
| 183 |
av_push (av, newSVuv (rr->serial)); |
| 184 |
av_push (av, newSVuv (rr->refresh)); |
| 185 |
av_push (av, newSVuv (rr->retry)); |
| 186 |
av_push (av, newSVuv (rr->expire)); |
| 187 |
av_push (av, newSVuv (rr->minimum)); |
| 188 |
|
| 189 |
sv = newRV_noinc ((SV *)av); |
| 190 |
} |
| 191 |
break; |
| 192 |
|
| 193 |
case adns_r_srv_raw: |
| 194 |
{ |
| 195 |
AV *av = newAV (); |
| 196 |
adns_rr_srvraw *rr = a->rrs.srvraw + i; |
| 197 |
|
| 198 |
av_push (av, newSViv (rr->priority)); |
| 199 |
av_push (av, newSViv (rr->weight)); |
| 200 |
av_push (av, newSViv (rr->port)); |
| 201 |
av_push (av, newSVpv (rr->host, 0)); |
| 202 |
|
| 203 |
sv = newRV_noinc ((SV *)av); |
| 204 |
} |
| 205 |
break; |
| 206 |
|
| 207 |
case adns_r_srv: |
| 208 |
{ |
| 209 |
AV *av = newAV (); |
| 210 |
adns_rr_srvha *rr = a->rrs.srvha + i; |
| 211 |
|
| 212 |
av_push (av, newSViv (rr->priority)); |
| 213 |
av_push (av, newSViv (rr->weight)); |
| 214 |
av_push (av, newSViv (rr->port)); |
| 215 |
av_push (av, ha2sv (&rr->ha)); |
| 216 |
|
| 217 |
sv = newRV_noinc ((SV *)av); |
| 218 |
} |
| 219 |
break; |
| 220 |
|
| 221 |
case adns_r_unknown: |
| 222 |
sv = newSVpvn (a->rrs.byteblock [i].data, a->rrs.byteblock [i].len); |
| 223 |
break; |
| 224 |
|
| 225 |
default: |
| 226 |
sv = &PL_sv_undef; /* not supported */ |
| 227 |
break; |
| 228 |
} |
| 229 |
|
| 230 |
PUSHs (sv_2mortal (sv)); |
| 231 |
} |
| 232 |
|
| 233 |
free (a); |
| 234 |
|
| 235 |
PUTBACK; |
| 236 |
call_sv (cb, G_VOID | G_DISCARD | G_EVAL); |
| 237 |
SPAGAIN; |
| 238 |
|
| 239 |
if (SvTRUE (ERRSV)) |
| 240 |
warn ("%s", SvPV_nolen (ERRSV)); |
| 241 |
|
| 242 |
SvREFCNT_dec (cb); |
| 243 |
} |
| 244 |
|
| 245 |
FREETMPS; |
| 246 |
LEAVE; |
| 247 |
} |
| 248 |
|
| 249 |
static void |
| 250 |
update_now (EV_P) |
| 251 |
{ |
| 252 |
ev_tstamp t = ev_now (EV_A); |
| 253 |
|
| 254 |
tv_now.tv_sec = (long)t; |
| 255 |
tv_now.tv_usec = (long)((t - (ev_tstamp)tv_now.tv_sec) * 1e6); |
| 256 |
} |
| 257 |
|
| 258 |
static void |
| 259 |
idle_cb (EV_P_ ev_idle *w, int revents) |
| 260 |
{ |
| 261 |
ev_idle_stop (EV_A, w); |
| 262 |
} |
| 263 |
|
| 264 |
static void |
| 265 |
timer_cb (EV_P_ ev_timer *w, int revents) |
| 266 |
{ |
| 267 |
adns_state ads = (adns_state)w->data; |
| 268 |
update_now (EV_A); |
| 269 |
|
| 270 |
adns_processtimeouts (ads, &tv_now); |
| 271 |
} |
| 272 |
|
| 273 |
static void |
| 274 |
io_cb (EV_P_ ev_io *w, int revents) |
| 275 |
{ |
| 276 |
adns_state ads = (adns_state)w->data; |
| 277 |
update_now (EV_A); |
| 278 |
|
| 279 |
if (revents & EV_READ ) adns_processreadable (ads, w->fd, &tv_now); |
| 280 |
if (revents & EV_WRITE) adns_processwriteable (ads, w->fd, &tv_now); |
| 281 |
} |
| 282 |
|
| 283 |
// create io watchers for each fd and a timer before blocking |
| 284 |
static void |
| 285 |
prepare_cb (EV_P_ ev_prepare *w, int revents) |
| 286 |
{ |
| 287 |
int i; |
| 288 |
int timeout = 3600000; |
| 289 |
adns_state ads = (adns_state)w->data; |
| 290 |
|
| 291 |
if (ev_is_active (&tw)) |
| 292 |
ev_timer_stop (EV_A, &tw); |
| 293 |
|
| 294 |
if (ev_is_active (&iw)) |
| 295 |
ev_idle_stop (EV_A, &iw); |
| 296 |
|
| 297 |
for (i = 0; i < nfd; ++i) |
| 298 |
ev_io_stop (EV_A, iow + i); |
| 299 |
|
| 300 |
process (ads); |
| 301 |
|
| 302 |
if (!outstanding) |
| 303 |
{ |
| 304 |
ev_prepare_stop (EV_A, w); |
| 305 |
return; |
| 306 |
} |
| 307 |
|
| 308 |
update_now (EV_A); |
| 309 |
|
| 310 |
nfd = mfd; |
| 311 |
|
| 312 |
while (adns_beforepoll (ads, fds, &nfd, &timeout, &tv_now)) |
| 313 |
{ |
| 314 |
mfd = nfd; |
| 315 |
|
| 316 |
free (iow); iow = malloc (mfd * sizeof (ev_io)); |
| 317 |
free (fds); fds = malloc (mfd * sizeof (struct pollfd)); |
| 318 |
} |
| 319 |
|
| 320 |
ev_timer_set (&tw, timeout * 1e-3, 0.); |
| 321 |
ev_timer_start (EV_A, &tw); |
| 322 |
|
| 323 |
// create one ev_io per pollfd |
| 324 |
for (i = 0; i < nfd; ++i) |
| 325 |
{ |
| 326 |
ev_io *w = iow + i; |
| 327 |
|
| 328 |
ev_io_init (w, io_cb, fds [i].fd, |
| 329 |
((fds [i].events & POLLIN ? EV_READ : 0) |
| 330 |
| (fds [i].events & POLLOUT ? EV_WRITE : 0))); |
| 331 |
|
| 332 |
w->data = (void *)ads; |
| 333 |
ev_io_start (EV_A, w); |
| 334 |
} |
| 335 |
} |
| 336 |
|
| 337 |
static HV *stash; |
| 338 |
static adns_state ads; |
| 339 |
|
| 340 |
MODULE = EV::ADNS PACKAGE = EV::ADNS |
| 341 |
|
| 342 |
PROTOTYPES: ENABLE |
| 343 |
|
| 344 |
BOOT: |
| 345 |
{ |
| 346 |
stash = gv_stashpv ("EV::ADNS", 1); |
| 347 |
|
| 348 |
static const struct { |
| 349 |
const char *name; |
| 350 |
IV iv; |
| 351 |
} *civ, const_iv[] = { |
| 352 |
# define const_iv(name) { # name, (IV) adns_ ## name }, |
| 353 |
const_iv (if_none) |
| 354 |
const_iv (if_noenv) |
| 355 |
const_iv (if_noerrprint) |
| 356 |
const_iv (if_noserverwarn) |
| 357 |
const_iv (if_debug) |
| 358 |
const_iv (if_logpid) |
| 359 |
const_iv (if_noautosys) |
| 360 |
const_iv (if_eintr) |
| 361 |
const_iv (if_nosigpipe) |
| 362 |
const_iv (if_checkc_entex) |
| 363 |
const_iv (if_checkc_freq) |
| 364 |
|
| 365 |
const_iv (qf_none) |
| 366 |
const_iv (qf_search) |
| 367 |
const_iv (qf_usevc) |
| 368 |
const_iv (qf_owner) |
| 369 |
const_iv (qf_quoteok_query) |
| 370 |
const_iv (qf_quoteok_cname) |
| 371 |
const_iv (qf_quoteok_anshost) |
| 372 |
const_iv (qf_quotefail_cname) |
| 373 |
const_iv (qf_cname_loose) |
| 374 |
const_iv (qf_cname_forbid) |
| 375 |
|
| 376 |
const_iv (rrt_typemask) |
| 377 |
const_iv (_qtf_deref) |
| 378 |
const_iv (_qtf_mail822) |
| 379 |
const_iv (r_unknown) |
| 380 |
const_iv (r_none) |
| 381 |
const_iv (r_a) |
| 382 |
const_iv (r_ns_raw) |
| 383 |
const_iv (r_ns) |
| 384 |
const_iv (r_cname) |
| 385 |
const_iv (r_soa_raw) |
| 386 |
const_iv (r_soa) |
| 387 |
const_iv (r_ptr_raw) |
| 388 |
const_iv (r_ptr) |
| 389 |
const_iv (r_hinfo) |
| 390 |
const_iv (r_mx_raw) |
| 391 |
const_iv (r_mx) |
| 392 |
const_iv (r_txt) |
| 393 |
const_iv (r_rp_raw) |
| 394 |
const_iv (r_rp) |
| 395 |
const_iv (r_srv_raw) |
| 396 |
const_iv (r_srv) |
| 397 |
const_iv (r_addr) |
| 398 |
|
| 399 |
const_iv (s_ok) |
| 400 |
const_iv (s_nomemory) |
| 401 |
const_iv (s_unknownrrtype) |
| 402 |
const_iv (s_systemfail) |
| 403 |
const_iv (s_max_localfail) |
| 404 |
const_iv (s_timeout) |
| 405 |
const_iv (s_allservfail) |
| 406 |
const_iv (s_norecurse) |
| 407 |
const_iv (s_invalidresponse) |
| 408 |
const_iv (s_unknownformat) |
| 409 |
const_iv (s_max_remotefail) |
| 410 |
const_iv (s_rcodeservfail) |
| 411 |
const_iv (s_rcodeformaterror) |
| 412 |
const_iv (s_rcodenotimplemented) |
| 413 |
const_iv (s_rcoderefused) |
| 414 |
const_iv (s_rcodeunknown) |
| 415 |
const_iv (s_max_tempfail) |
| 416 |
const_iv (s_inconsistent) |
| 417 |
const_iv (s_prohibitedcname) |
| 418 |
const_iv (s_answerdomaininvalid) |
| 419 |
const_iv (s_answerdomaintoolong) |
| 420 |
const_iv (s_invaliddata) |
| 421 |
const_iv (s_max_misconfig) |
| 422 |
const_iv (s_querydomainwrong) |
| 423 |
const_iv (s_querydomaininvalid) |
| 424 |
const_iv (s_querydomaintoolong) |
| 425 |
const_iv (s_max_misquery) |
| 426 |
const_iv (s_nxdomain) |
| 427 |
const_iv (s_nodata) |
| 428 |
const_iv (s_max_permfail) |
| 429 |
}; |
| 430 |
|
| 431 |
for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--) |
| 432 |
newCONSTSUB (stash, (char *)civ[-1].name, newSViv (civ[-1].iv)); |
| 433 |
|
| 434 |
I_EV_API ("EV::ADNS"); |
| 435 |
|
| 436 |
adns_init (&ads, adns_if_noenv | adns_if_noerrprint | adns_if_noserverwarn | adns_if_noautosys, 0); |
| 437 |
|
| 438 |
ev_prepare_init (&pw, prepare_cb); |
| 439 |
pw.data = (void *)ads; |
| 440 |
|
| 441 |
ev_init (&iw, idle_cb); ev_set_priority (&iw, EV_MINPRI); |
| 442 |
iw.data = (void *)ads; |
| 443 |
ev_init (&tw, timer_cb); |
| 444 |
tw.data = (void *)ads; |
| 445 |
} |
| 446 |
|
| 447 |
void submit (char *owner, int type, int flags, SV *cb) |
| 448 |
PPCODE: |
| 449 |
{ |
| 450 |
SV *csv = NEWSV (0, sizeof (struct ctx)); |
| 451 |
struct ctx *c = (struct ctx *)SvPVX (csv); |
| 452 |
int r = adns_submit (ads, owner, type, flags, (void *)c, &c->query); |
| 453 |
|
| 454 |
outstanding_inc (ads); |
| 455 |
|
| 456 |
if (r) |
| 457 |
{ |
| 458 |
SvREFCNT_dec (csv); |
| 459 |
errno = r; |
| 460 |
XSRETURN_EMPTY; |
| 461 |
} |
| 462 |
else |
| 463 |
{ |
| 464 |
SvPOK_only (csv); |
| 465 |
SvCUR_set (csv, sizeof (struct ctx)); |
| 466 |
|
| 467 |
c->self = csv; |
| 468 |
c->cb = newSVsv (cb); |
| 469 |
c->ads = ads; |
| 470 |
|
| 471 |
if (!ev_is_active (&iw)) |
| 472 |
ev_idle_start (EV_DEFAULT, &iw); |
| 473 |
|
| 474 |
if (GIMME_V != G_VOID) |
| 475 |
{ |
| 476 |
csv = sv_2mortal (newRV_inc (csv)); |
| 477 |
sv_bless (csv, stash); |
| 478 |
XPUSHs (csv); |
| 479 |
} |
| 480 |
} |
| 481 |
} |
| 482 |
|
| 483 |
void DESTROY (SV *req) |
| 484 |
ALIAS: |
| 485 |
cancel = 1 |
| 486 |
CODE: |
| 487 |
{ |
| 488 |
struct ctx *c; |
| 489 |
|
| 490 |
if (!(SvROK (req) && SvOBJECT (SvRV (req)) |
| 491 |
&& (SvSTASH (SvRV (req)) == stash))) |
| 492 |
croak ("object is not of type EV::ADNS"); |
| 493 |
|
| 494 |
c = (struct ctx *)SvPVX (SvRV (req)); |
| 495 |
|
| 496 |
if (c->cb) |
| 497 |
{ |
| 498 |
SvREFCNT_dec (c->cb); |
| 499 |
c->cb = 0; outstanding_dec (c->ads); |
| 500 |
adns_cancel (c->query); |
| 501 |
SvREFCNT_dec (c->self); |
| 502 |
} |
| 503 |
} |
| 504 |
|
