contrib/ntp/sntp/libevent/test/regress_bufferevent.c

   1 /*
   2  * Copyright (c) 2003-2007 Niels Provos <provos@citi.umich.edu>
   3  * Copyright (c) 2007-2012 Niels Provos and Nick Mathewson
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. The name of the author may not be used to endorse or promote products
  14  *    derived from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27 #include "util-internal.h"
  28
  29 /* The old tests here need assertions to work. */
  30 #undef NDEBUG
  31
  32 #ifdef _WIN32
  33 #include <winsock2.h>
  34 #include <windows.h>
  35 #endif
  36
  37 #include "event2/event-config.h"
  38
  39 #include <sys/types.h>
  40 #include <sys/stat.h>
  41 #ifdef EVENT__HAVE_SYS_TIME_H
  42 #include <sys/time.h>
  43 #endif
  44 #include <sys/queue.h>
  45 #ifndef _WIN32
  46 #include <sys/socket.h>
  47 #include <sys/wait.h>
  48 #include <signal.h>
  49 #include <unistd.h>
  50 #include <netdb.h>
  51 #include <netinet/in.h>
  52 #endif
  53 #include <fcntl.h>
  54 #include <signal.h>
  55 #include <stdlib.h>
  56 #include <stdio.h>
  57 #include <string.h>
  58 #include <errno.h>
  59 #include <assert.h>
  60
  61 #ifdef EVENT__HAVE_ARPA_INET_H
  62 #include <arpa/inet.h>
  63 #endif
  64
  65 #include "event2/event-config.h"
  66 #include "event2/event.h"
  67 #include "event2/event_struct.h"
  68 #include "event2/event_compat.h"
  69 #include "event2/tag.h"
  70 #include "event2/buffer.h"
  71 #include "event2/bufferevent.h"
  72 #include "event2/bufferevent_compat.h"
  73 #include "event2/bufferevent_struct.h"
  74 #include "event2/listener.h"
  75 #include "event2/util.h"
  76
  77 #include "bufferevent-internal.h"
  78 #include "evthread-internal.h"
  79 #include "util-internal.h"
  80 #ifdef _WIN32
  81 #include "iocp-internal.h"
  82 #endif
  83
  84 #include "regress.h"
  85 #include "regress_testutils.h"
  86
  87 /*
  88  * simple bufferevent test
  89  */
  90
  91 static void
  92 readcb(struct bufferevent *bev, void *arg)
  93 {
  94         if (evbuffer_get_length(bev->input) == 8333) {
  95                 struct evbuffer *evbuf = evbuffer_new();
  96                 assert(evbuf != NULL);
  97
  98                 /* gratuitous test of bufferevent_read_buffer */
  99                 bufferevent_read_buffer(bev, evbuf);
 100
 101                 bufferevent_disable(bev, EV_READ);
 102
 103                 if (evbuffer_get_length(evbuf) == 8333) {
 104                         test_ok++;
 105                 }
 106
 107                 evbuffer_free(evbuf);
 108         }
 109 }
 110
 111 static void
 112 writecb(struct bufferevent *bev, void *arg)
 113 {
 114         if (evbuffer_get_length(bev->output) == 0) {
 115                 test_ok++;
 116         }
 117 }
 118
 119 static void
 120 errorcb(struct bufferevent *bev, short what, void *arg)
 121 {
 122         test_ok = -2;
 123 }
 124
 125 static void
 126 test_bufferevent_impl(int use_pair)
 127 {
 128         struct bufferevent *bev1 = NULL, *bev2 = NULL;
 129         char buffer[8333];
 130         int i;
 131
 132         if (use_pair) {
 133                 struct bufferevent *pair[2];
 134                 tt_assert(0 == bufferevent_pair_new(NULL, 0, pair));
 135                 bev1 = pair[0];
 136                 bev2 = pair[1];
 137                 bufferevent_setcb(bev1, readcb, writecb, errorcb, bev1);
 138                 bufferevent_setcb(bev2, readcb, writecb, errorcb, NULL);
 139                 tt_int_op(bufferevent_getfd(bev1), ==, -1);
 140                 tt_ptr_op(bufferevent_get_underlying(bev1), ==, NULL);
 141                 tt_ptr_op(bufferevent_pair_get_partner(bev1), ==, bev2);
 142                 tt_ptr_op(bufferevent_pair_get_partner(bev2), ==, bev1);
 143         } else {
 144                 bev1 = bufferevent_new(pair[0], readcb, writecb, errorcb, NULL);
 145                 bev2 = bufferevent_new(pair[1], readcb, writecb, errorcb, NULL);
 146                 tt_int_op(bufferevent_getfd(bev1), ==, pair[0]);
 147                 tt_ptr_op(bufferevent_get_underlying(bev1), ==, NULL);
 148                 tt_ptr_op(bufferevent_pair_get_partner(bev1), ==, NULL);
 149                 tt_ptr_op(bufferevent_pair_get_partner(bev2), ==, NULL);
 150         }
 151
 152         {
 153                 /* Test getcb. */
 154                 bufferevent_data_cb r, w;
 155                 bufferevent_event_cb e;
 156                 void *a;
 157                 bufferevent_getcb(bev1, &r, &w, &e, &a);
 158                 tt_ptr_op(r, ==, readcb);
 159                 tt_ptr_op(w, ==, writecb);
 160                 tt_ptr_op(e, ==, errorcb);
 161                 tt_ptr_op(a, ==, use_pair ? bev1 : NULL);
 162         }
 163
 164         bufferevent_disable(bev1, EV_READ);
 165         bufferevent_enable(bev2, EV_READ);
 166
 167         tt_int_op(bufferevent_get_enabled(bev1), ==, EV_WRITE);
 168         tt_int_op(bufferevent_get_enabled(bev2), ==, EV_WRITE|EV_READ);
 169
 170         for (i = 0; i < (int)sizeof(buffer); i++)
 171                 buffer[i] = i;
 172
 173         bufferevent_write(bev1, buffer, sizeof(buffer));
 174
 175         event_dispatch();
 176
 177         bufferevent_free(bev2);
 178         tt_ptr_op(bufferevent_pair_get_partner(bev1), ==, NULL);
 179         bufferevent_free(bev1);
 180
 181         if (test_ok != 2)
 182                 test_ok = 0;
 183 end:
 184         ;
 185 }
 186
 187 static void
 188 test_bufferevent(void)
 189 {
 190         test_bufferevent_impl(0);
 191 }
 192
 193 static void
 194 test_bufferevent_pair(void)
 195 {
 196         test_bufferevent_impl(1);
 197 }
 198
 199 #if defined(EVTHREAD_USE_PTHREADS_IMPLEMENTED)
 200 /**
 201  * Trace lock/unlock/alloc/free for locks.
 202  * (More heavier then evthread_debug*)
 203  */
 204 typedef struct
 205 {
 206         void *lock;
 207         enum {
 208                 ALLOC, FREE,
 209         } status;
 210         size_t locked /** allow recursive locking */;
 211 } lock_wrapper;
 212 struct lock_unlock_base
 213 {
 214         /* Original callbacks */
 215         struct evthread_lock_callbacks cbs;
 216         /* Map of locks */
 217         lock_wrapper *locks;
 218         size_t nr_locks;
 219 } lu_base = {
 220         .locks = NULL,
 221 };
 222
 223 static lock_wrapper *lu_find(void *lock_)
 224 {
 225         size_t i;
 226         for (i = 0; i < lu_base.nr_locks; ++i) {
 227                 lock_wrapper *lock = &lu_base.locks[i];
 228                 if (lock->lock == lock_)
 229                         return lock;
 230         }
 231         return NULL;
 232 }
 233
 234 static void *trace_lock_alloc(unsigned locktype)
 235 {
 236         ++lu_base.nr_locks;
 237         lu_base.locks = realloc(lu_base.locks,
 238                 sizeof(lock_wrapper) * lu_base.nr_locks);
 239         void *lock = lu_base.cbs.alloc(locktype);
 240         lu_base.locks[lu_base.nr_locks - 1] = (lock_wrapper){ lock, ALLOC, 0 };
 241         return lock;
 242 }
 243 static void trace_lock_free(void *lock_, unsigned locktype)
 244 {
 245         lock_wrapper *lock = lu_find(lock_);
 246         if (!lock || lock->status == FREE || lock->locked) {
 247                 __asm__("int3");
 248                 TT_FAIL(("lock: free error"));
 249         } else {
 250                 lock->status = FREE;
 251                 lu_base.cbs.free(lock_, locktype);
 252         }
 253 }
 254 static int trace_lock_lock(unsigned mode, void *lock_)
 255 {
 256         lock_wrapper *lock = lu_find(lock_);
 257         if (!lock || lock->status == FREE) {
 258                 TT_FAIL(("lock: lock error"));
 259                 return -1;
 260         } else {
 261                 ++lock->locked;
 262                 return lu_base.cbs.lock(mode, lock_);
 263         }
 264 }
 265 static int trace_lock_unlock(unsigned mode, void *lock_)
 266 {
 267         lock_wrapper *lock = lu_find(lock_);
 268         if (!lock || lock->status == FREE || !lock->locked) {
 269                 TT_FAIL(("lock: unlock error"));
 270                 return -1;
 271         } else {
 272                 --lock->locked;
 273                 return lu_base.cbs.unlock(mode, lock_);
 274         }
 275 }
 276 static void lock_unlock_free_thread_cbs()
 277 {
 278         event_base_free(NULL);
 279
 280         /** drop immutable flag */
 281         evthread_set_lock_callbacks(NULL);
 282         /** avoid calling of event_global_setup_locks_() for new cbs */
 283         libevent_global_shutdown();
 284         /** drop immutable flag for non-debug ops (since called after shutdown) */
 285         evthread_set_lock_callbacks(NULL);
 286 }
 287
 288 static int use_lock_unlock_profiler(void)
 289 {
 290         struct evthread_lock_callbacks cbs = {
 291                 EVTHREAD_LOCK_API_VERSION,
 292                 EVTHREAD_LOCKTYPE_RECURSIVE,
 293                 trace_lock_alloc,
 294                 trace_lock_free,
 295                 trace_lock_lock,
 296                 trace_lock_unlock,
 297         };
 298         memcpy(&lu_base.cbs, evthread_get_lock_callbacks(),
 299                 sizeof(lu_base.cbs));
 300         {
 301                 lock_unlock_free_thread_cbs();
 302
 303                 evthread_set_lock_callbacks(&cbs);
 304                 /** re-create debug locks correctly */
 305                 evthread_enable_lock_debugging();
 306
 307                 event_init();
 308         }
 309         return 0;
 310 }
 311 static void free_lock_unlock_profiler(struct basic_test_data *data)
 312 {
 313         lock_unlock_free_thread_cbs();
 314         free(lu_base.locks);
 315         data->base = NULL;
 316 }
 317
 318 static void test_bufferevent_pair_release_lock(void *arg)
 319 {
 320         struct basic_test_data *data = arg;
 321         use_lock_unlock_profiler();
 322         {
 323                 struct bufferevent *pair[2];
 324                 if (!bufferevent_pair_new(NULL, BEV_OPT_THREADSAFE, pair)) {
 325                         bufferevent_free(pair[0]);
 326                         bufferevent_free(pair[1]);
 327                 } else
 328                         tt_abort_perror("bufferevent_pair_new");
 329         }
 330         free_lock_unlock_profiler(data);
 331 end:
 332         ;
 333 }
 334 #endif
 335
 336 /*
 337  * test watermarks and bufferevent
 338  */
 339
 340 static void
 341 wm_readcb(struct bufferevent *bev, void *arg)
 342 {
 343         struct evbuffer *evbuf = evbuffer_new();
 344         int len = (int)evbuffer_get_length(bev->input);
 345         static int nread;
 346
 347         assert(len >= 10 && len <= 20);
 348
 349         assert(evbuf != NULL);
 350
 351         /* gratuitous test of bufferevent_read_buffer */
 352         bufferevent_read_buffer(bev, evbuf);
 353
 354         nread += len;
 355         if (nread == 65000) {
 356                 bufferevent_disable(bev, EV_READ);
 357                 test_ok++;
 358         }
 359
 360         evbuffer_free(evbuf);
 361 }
 362
 363 static void
 364 wm_writecb(struct bufferevent *bev, void *arg)
 365 {
 366         assert(evbuffer_get_length(bev->output) <= 100);
 367         if (evbuffer_get_length(bev->output) == 0) {
 368                 evbuffer_drain(bev->output, evbuffer_get_length(bev->output));
 369                 test_ok++;
 370         }
 371 }
 372
 373 static void
 374 wm_errorcb(struct bufferevent *bev, short what, void *arg)
 375 {
 376         test_ok = -2;
 377 }
 378
 379 static void
 380 test_bufferevent_watermarks_impl(int use_pair)
 381 {
 382         struct bufferevent *bev1 = NULL, *bev2 = NULL;
 383         char buffer[65000];
 384         size_t low, high;
 385         int i;
 386         test_ok = 0;
 387
 388         if (use_pair) {
 389                 struct bufferevent *pair[2];
 390                 tt_assert(0 == bufferevent_pair_new(NULL, 0, pair));
 391                 bev1 = pair[0];
 392                 bev2 = pair[1];
 393                 bufferevent_setcb(bev1, NULL, wm_writecb, errorcb, NULL);
 394                 bufferevent_setcb(bev2, wm_readcb, NULL, errorcb, NULL);
 395         } else {
 396                 bev1 = bufferevent_new(pair[0], NULL, wm_writecb, wm_errorcb, NULL);
 397                 bev2 = bufferevent_new(pair[1], wm_readcb, NULL, wm_errorcb, NULL);
 398         }
 399         tt_assert(bev1);
 400         tt_assert(bev2);
 401         bufferevent_disable(bev1, EV_READ);
 402         bufferevent_enable(bev2, EV_READ);
 403
 404         /* By default, low watermarks are set to 0 */
 405         bufferevent_getwatermark(bev1, EV_READ, &low, NULL);
 406         tt_int_op(low, ==, 0);
 407         bufferevent_getwatermark(bev2, EV_WRITE, &low, NULL);
 408         tt_int_op(low, ==, 0);
 409
 410         for (i = 0; i < (int)sizeof(buffer); i++)
 411                 buffer[i] = (char)i;
 412
 413         /* limit the reading on the receiving bufferevent */
 414         bufferevent_setwatermark(bev2, EV_READ, 10, 20);
 415
 416         bufferevent_getwatermark(bev2, EV_READ, &low, &high);
 417         tt_int_op(low, ==, 10);
 418         tt_int_op(high, ==, 20);
 419
 420         /* Tell the sending bufferevent not to notify us till it's down to
 421            100 bytes. */
 422         bufferevent_setwatermark(bev1, EV_WRITE, 100, 2000);
 423
 424         bufferevent_getwatermark(bev1, EV_WRITE, &low, &high);
 425         tt_int_op(low, ==, 100);
 426         tt_int_op(high, ==, 2000);
 427
 428         {
 429         int r = bufferevent_getwatermark(bev1, EV_WRITE | EV_READ, &low, &high);
 430         tt_int_op(r, !=, 0);
 431         }
 432
 433         bufferevent_write(bev1, buffer, sizeof(buffer));
 434
 435         event_dispatch();
 436
 437         tt_int_op(test_ok, ==, 2);
 438
 439         /* The write callback drained all the data from outbuf, so we
 440          * should have removed the write event... */
 441         tt_assert(!event_pending(&bev2->ev_write, EV_WRITE, NULL));
 442
 443 end:
 444         if (bev1)
 445                 bufferevent_free(bev1);
 446         if (bev2)
 447                 bufferevent_free(bev2);
 448 }
 449
 450 static void
 451 test_bufferevent_watermarks(void)
 452 {
 453         test_bufferevent_watermarks_impl(0);
 454 }
 455
 456 static void
 457 test_bufferevent_pair_watermarks(void)
 458 {
 459         test_bufferevent_watermarks_impl(1);
 460 }
 461
 462 /*
 463  * Test bufferevent filters
 464  */
 465
 466 /* strip an 'x' from each byte */
 467
 468 static enum bufferevent_filter_result
 469 bufferevent_input_filter(struct evbuffer *src, struct evbuffer *dst,
 470     ev_ssize_t lim, enum bufferevent_flush_mode state, void *ctx)
 471 {
 472         const unsigned char *buffer;
 473         unsigned i;
 474
 475         buffer = evbuffer_pullup(src, evbuffer_get_length(src));
 476         for (i = 0; i < evbuffer_get_length(src); i += 2) {
 477                 assert(buffer[i] == 'x');
 478                 evbuffer_add(dst, buffer + i + 1, 1);
 479
 480                 if (i + 2 > evbuffer_get_length(src))
 481                         break;
 482         }
 483
 484         evbuffer_drain(src, i);
 485         return (BEV_OK);
 486 }
 487
 488 /* add an 'x' before each byte */
 489
 490 static enum bufferevent_filter_result
 491 bufferevent_output_filter(struct evbuffer *src, struct evbuffer *dst,
 492     ev_ssize_t lim, enum bufferevent_flush_mode state, void *ctx)
 493 {
 494         const unsigned char *buffer;
 495         unsigned i;
 496
 497         buffer = evbuffer_pullup(src, evbuffer_get_length(src));
 498         for (i = 0; i < evbuffer_get_length(src); ++i) {
 499                 evbuffer_add(dst, "x", 1);
 500                 evbuffer_add(dst, buffer + i, 1);
 501         }
 502
 503         evbuffer_drain(src, evbuffer_get_length(src));
 504         return (BEV_OK);
 505 }
 506
 507 static void
 508 test_bufferevent_filters_impl(int use_pair)
 509 {
 510         struct bufferevent *bev1 = NULL, *bev2 = NULL;
 511         struct bufferevent *bev1_base = NULL, *bev2_base = NULL;
 512         char buffer[8333];
 513         int i;
 514
 515         test_ok = 0;
 516
 517         if (use_pair) {
 518                 struct bufferevent *pair[2];
 519                 tt_assert(0 == bufferevent_pair_new(NULL, 0, pair));
 520                 bev1 = pair[0];
 521                 bev2 = pair[1];
 522         } else {
 523                 bev1 = bufferevent_socket_new(NULL, pair[0], 0);
 524                 bev2 = bufferevent_socket_new(NULL, pair[1], 0);
 525         }
 526         bev1_base = bev1;
 527         bev2_base = bev2;
 528
 529         for (i = 0; i < (int)sizeof(buffer); i++)
 530                 buffer[i] = i;
 531
 532         bev1 = bufferevent_filter_new(bev1, NULL, bufferevent_output_filter,
 533                                       BEV_OPT_CLOSE_ON_FREE, NULL, NULL);
 534
 535         bev2 = bufferevent_filter_new(bev2, bufferevent_input_filter,
 536                                       NULL, BEV_OPT_CLOSE_ON_FREE, NULL, NULL);
 537         bufferevent_setcb(bev1, NULL, writecb, errorcb, NULL);
 538         bufferevent_setcb(bev2, readcb, NULL, errorcb, NULL);
 539
 540         tt_ptr_op(bufferevent_get_underlying(bev1), ==, bev1_base);
 541         tt_ptr_op(bufferevent_get_underlying(bev2), ==, bev2_base);
 542         tt_int_op(bufferevent_getfd(bev1), ==, -1);
 543         tt_int_op(bufferevent_getfd(bev2), ==, -1);
 544
 545         bufferevent_disable(bev1, EV_READ);
 546         bufferevent_enable(bev2, EV_READ);
 547         /* insert some filters */
 548         bufferevent_write(bev1, buffer, sizeof(buffer));
 549
 550         event_dispatch();
 551
 552         if (test_ok != 2)
 553                 test_ok = 0;
 554
 555 end:
 556         if (bev1)
 557                 bufferevent_free(bev1);
 558         if (bev2)
 559                 bufferevent_free(bev2);
 560
 561 }
 562
 563 static void
 564 test_bufferevent_filters(void)
 565 {
 566         test_bufferevent_filters_impl(0);
 567 }
 568
 569 static void
 570 test_bufferevent_pair_filters(void)
 571 {
 572         test_bufferevent_filters_impl(1);
 573 }
 574
 575
 576 static void
 577 sender_writecb(struct bufferevent *bev, void *ctx)
 578 {
 579         if (evbuffer_get_length(bufferevent_get_output(bev)) == 0) {
 580                 bufferevent_disable(bev,EV_READ|EV_WRITE);
 581                 TT_BLATHER(("Flushed %d: freeing it.", (int)bufferevent_getfd(bev)));
 582                 bufferevent_free(bev);
 583         }
 584 }
 585
 586 static void
 587 sender_errorcb(struct bufferevent *bev, short what, void *ctx)
 588 {
 589         TT_FAIL(("Got sender error %d",(int)what));
 590 }
 591
 592 static int bufferevent_connect_test_flags = 0;
 593 static int bufferevent_trigger_test_flags = 0;
 594 static int n_strings_read = 0;
 595 static int n_reads_invoked = 0;
 596
 597 #define TEST_STR "Now is the time for all good events to signal for " \
 598         "the good of their protocol"
 599 static void
 600 listen_cb(struct evconnlistener *listener, evutil_socket_t fd,
 601     struct sockaddr *sa, int socklen, void *arg)
 602 {
 603         struct event_base *base = arg;
 604         struct bufferevent *bev;
 605         const char s[] = TEST_STR;
 606         TT_BLATHER(("Got a request on socket %d", (int)fd ));
 607         bev = bufferevent_socket_new(base, fd, bufferevent_connect_test_flags);
 608         tt_assert(bev);
 609         bufferevent_setcb(bev, NULL, sender_writecb, sender_errorcb, NULL);
 610         bufferevent_write(bev, s, sizeof(s));
 611 end:
 612         ;
 613 }
 614
 615 static void
 616 reader_eventcb(struct bufferevent *bev, short what, void *ctx)
 617 {
 618         struct event_base *base = ctx;
 619         if (what & BEV_EVENT_ERROR) {
 620                 perror("foobar");
 621                 TT_FAIL(("got connector error %d", (int)what));
 622                 return;
 623         }
 624         if (what & BEV_EVENT_CONNECTED) {
 625                 TT_BLATHER(("connected on %d", (int)bufferevent_getfd(bev)));
 626                 bufferevent_enable(bev, EV_READ);
 627         }
 628         if (what & BEV_EVENT_EOF) {
 629                 char buf[512];
 630                 size_t n;
 631                 n = bufferevent_read(bev, buf, sizeof(buf)-1);
 632                 tt_int_op(n, >=, 0);
 633                 buf[n] = '\0';
 634                 tt_str_op(buf, ==, TEST_STR);
 635                 if (++n_strings_read == 2)
 636                         event_base_loopexit(base, NULL);
 637                 TT_BLATHER(("EOF on %d: %d strings read.",
 638                         (int)bufferevent_getfd(bev), n_strings_read));
 639         }
 640 end:
 641         ;
 642 }
 643
 644 static void
 645 reader_readcb(struct bufferevent *bev, void *ctx)
 646 {
 647         TT_BLATHER(("Read invoked on %d.", (int)bufferevent_getfd(bev)));
 648         n_reads_invoked++;
 649 }
 650
 651 static void
 652 test_bufferevent_connect(void *arg)
 653 {
 654         struct basic_test_data *data = arg;
 655         struct evconnlistener *lev=NULL;
 656         struct bufferevent *bev1=NULL, *bev2=NULL;
 657         struct sockaddr_in localhost;
 658         struct sockaddr_storage ss;
 659         struct sockaddr *sa;
 660         ev_socklen_t slen;
 661
 662         int be_flags=BEV_OPT_CLOSE_ON_FREE;
 663
 664         if (strstr((char*)data->setup_data, "defer")) {
 665                 be_flags |= BEV_OPT_DEFER_CALLBACKS;
 666         }
 667         if (strstr((char*)data->setup_data, "unlocked")) {
 668                 be_flags |= BEV_OPT_UNLOCK_CALLBACKS;
 669         }
 670         if (strstr((char*)data->setup_data, "lock")) {
 671                 be_flags |= BEV_OPT_THREADSAFE;
 672         }
 673         bufferevent_connect_test_flags = be_flags;
 674 #ifdef _WIN32
 675         if (!strcmp((char*)data->setup_data, "unset_connectex")) {
 676                 struct win32_extension_fns *ext =
 677                     (struct win32_extension_fns *)
 678                     event_get_win32_extension_fns_();
 679                 ext->ConnectEx = NULL;
 680         }
 681 #endif
 682
 683         memset(&localhost, 0, sizeof(localhost));
 684
 685         localhost.sin_port = 0; /* pick-a-port */
 686         localhost.sin_addr.s_addr = htonl(0x7f000001L);
 687         localhost.sin_family = AF_INET;
 688         sa = (struct sockaddr *)&localhost;
 689         lev = evconnlistener_new_bind(data->base, listen_cb, data->base,
 690             LEV_OPT_CLOSE_ON_FREE|LEV_OPT_REUSEABLE,
 691             16, sa, sizeof(localhost));
 692         tt_assert(lev);
 693
 694         sa = (struct sockaddr *)&ss;
 695         slen = sizeof(ss);
 696         if (regress_get_listener_addr(lev, sa, &slen) < 0) {
 697                 tt_abort_perror("getsockname");
 698         }
 699
 700         tt_assert(!evconnlistener_enable(lev));
 701         bev1 = bufferevent_socket_new(data->base, -1, be_flags);
 702         bev2 = bufferevent_socket_new(data->base, -1, be_flags);
 703         tt_assert(bev1);
 704         tt_assert(bev2);
 705         bufferevent_setcb(bev1, reader_readcb,NULL, reader_eventcb, data->base);
 706         bufferevent_setcb(bev2, reader_readcb,NULL, reader_eventcb, data->base);
 707
 708         bufferevent_enable(bev1, EV_READ);
 709         bufferevent_enable(bev2, EV_READ);
 710
 711         tt_want(!bufferevent_socket_connect(bev1, sa, sizeof(localhost)));
 712         tt_want(!bufferevent_socket_connect(bev2, sa, sizeof(localhost)));
 713
 714         event_base_dispatch(data->base);
 715
 716         tt_int_op(n_strings_read, ==, 2);
 717         tt_int_op(n_reads_invoked, >=, 2);
 718 end:
 719         if (lev)
 720                 evconnlistener_free(lev);
 721
 722         if (bev1)
 723                 bufferevent_free(bev1);
 724
 725         if (bev2)
 726                 bufferevent_free(bev2);
 727 }
 728
 729 static void
 730 want_fail_eventcb(struct bufferevent *bev, short what, void *ctx)
 731 {
 732         struct event_base *base = ctx;
 733         const char *err;
 734         evutil_socket_t s;
 735
 736         if (what & BEV_EVENT_ERROR) {
 737                 s = bufferevent_getfd(bev);
 738                 err = evutil_socket_error_to_string(evutil_socket_geterror(s));
 739                 TT_BLATHER(("connection failure on "EV_SOCK_FMT": %s",
 740                         EV_SOCK_ARG(s), err));
 741                 test_ok = 1;
 742         } else {
 743                 TT_FAIL(("didn't fail? what %hd", what));
 744         }
 745
 746         event_base_loopexit(base, NULL);
 747 }
 748
 749 static void
 750 close_socket_cb(evutil_socket_t fd, short what, void *arg)
 751 {
 752         evutil_socket_t *fdp = arg;
 753         if (*fdp >= 0) {
 754                 evutil_closesocket(*fdp);
 755                 *fdp = -1;
 756         }
 757 }
 758
 759 static void
 760 test_bufferevent_connect_fail(void *arg)
 761 {
 762         struct basic_test_data *data = (struct basic_test_data *)arg;
 763         struct bufferevent *bev=NULL;
 764         struct sockaddr_in localhost;
 765         struct sockaddr *sa = (struct sockaddr*)&localhost;
 766         evutil_socket_t fake_listener = -1;
 767         ev_socklen_t slen = sizeof(localhost);
 768         struct event close_listener_event;
 769         int close_listener_event_added = 0;
 770         struct timeval one_second = { 1, 0 };
 771         int r;
 772
 773         test_ok = 0;
 774
 775         memset(&localhost, 0, sizeof(localhost));
 776         localhost.sin_port = 0; /* have the kernel pick a port */
 777         localhost.sin_addr.s_addr = htonl(0x7f000001L);
 778         localhost.sin_family = AF_INET;
 779
 780         /* bind, but don't listen or accept. should trigger
 781            "Connection refused" reliably on most platforms. */
 782         fake_listener = socket(localhost.sin_family, SOCK_STREAM, 0);
 783         tt_assert(fake_listener >= 0);
 784         tt_assert(bind(fake_listener, sa, slen) == 0);
 785         tt_assert(getsockname(fake_listener, sa, &slen) == 0);
 786         bev = bufferevent_socket_new(data->base, -1,
 787                 BEV_OPT_CLOSE_ON_FREE | BEV_OPT_DEFER_CALLBACKS);
 788         tt_assert(bev);
 789         bufferevent_setcb(bev, NULL, NULL, want_fail_eventcb, data->base);
 790
 791         r = bufferevent_socket_connect(bev, sa, slen);
 792         /* XXXX we'd like to test the '0' case everywhere, but FreeBSD tells
 793          * detects the error immediately, which is not really wrong of it. */
 794         tt_want(r == 0 || r == -1);
 795
 796         /* Close the listener socket after a second. This should trigger
 797            "connection refused" on some other platforms, including OSX. */
 798         evtimer_assign(&close_listener_event, data->base, close_socket_cb,
 799             &fake_listener);
 800         event_add(&close_listener_event, &one_second);
 801         close_listener_event_added = 1;
 802
 803         event_base_dispatch(data->base);
 804
 805         tt_int_op(test_ok, ==, 1);
 806
 807 end:
 808         if (fake_listener >= 0)
 809                 evutil_closesocket(fake_listener);
 810
 811         if (bev)
 812                 bufferevent_free(bev);
 813
 814         if (close_listener_event_added)
 815                 event_del(&close_listener_event);
 816 }
 817
 818 struct timeout_cb_result {
 819         struct timeval read_timeout_at;
 820         struct timeval write_timeout_at;
 821         struct timeval last_wrote_at;
 822         int n_read_timeouts;
 823         int n_write_timeouts;
 824         int total_calls;
 825 };
 826
 827 static void
 828 bev_timeout_write_cb(struct bufferevent *bev, void *arg)
 829 {
 830         struct timeout_cb_result *res = arg;
 831         evutil_gettimeofday(&res->last_wrote_at, NULL);
 832 }
 833
 834 static void
 835 bev_timeout_event_cb(struct bufferevent *bev, short what, void *arg)
 836 {
 837         struct timeout_cb_result *res = arg;
 838         ++res->total_calls;
 839
 840         if ((what & (BEV_EVENT_READING|BEV_EVENT_TIMEOUT))
 841             == (BEV_EVENT_READING|BEV_EVENT_TIMEOUT)) {
 842                 evutil_gettimeofday(&res->read_timeout_at, NULL);
 843                 ++res->n_read_timeouts;
 844         }
 845         if ((what & (BEV_EVENT_WRITING|BEV_EVENT_TIMEOUT))
 846             == (BEV_EVENT_WRITING|BEV_EVENT_TIMEOUT)) {
 847                 evutil_gettimeofday(&res->write_timeout_at, NULL);
 848                 ++res->n_write_timeouts;
 849         }
 850 }
 851
 852 static void
 853 test_bufferevent_timeouts(void *arg)
 854 {
 855         /* "arg" is a string containing "pair" and/or "filter". */
 856         struct bufferevent *bev1 = NULL, *bev2 = NULL;
 857         struct basic_test_data *data = arg;
 858         int use_pair = 0, use_filter = 0;
 859         struct timeval tv_w, tv_r, started_at;
 860         struct timeout_cb_result res1, res2;
 861         char buf[1024];
 862
 863         memset(&res1, 0, sizeof(res1));
 864         memset(&res2, 0, sizeof(res2));
 865
 866         if (strstr((char*)data->setup_data, "pair"))
 867                 use_pair = 1;
 868         if (strstr((char*)data->setup_data, "filter"))
 869                 use_filter = 1;
 870
 871         if (use_pair) {
 872                 struct bufferevent *p[2];
 873                 tt_int_op(0, ==, bufferevent_pair_new(data->base, 0, p));
 874                 bev1 = p[0];
 875                 bev2 = p[1];
 876         } else {
 877                 bev1 = bufferevent_socket_new(data->base, data->pair[0], 0);
 878                 bev2 = bufferevent_socket_new(data->base, data->pair[1], 0);
 879         }
 880
 881         tt_assert(bev1);
 882         tt_assert(bev2);
 883
 884         if (use_filter) {
 885                 struct bufferevent *bevf1, *bevf2;
 886                 bevf1 = bufferevent_filter_new(bev1, NULL, NULL,
 887                     BEV_OPT_CLOSE_ON_FREE, NULL, NULL);
 888                 bevf2 = bufferevent_filter_new(bev2, NULL, NULL,
 889                     BEV_OPT_CLOSE_ON_FREE, NULL, NULL);
 890                 tt_assert(bevf1);
 891                 tt_assert(bevf2);
 892                 bev1 = bevf1;
 893                 bev2 = bevf2;
 894         }
 895
 896         /* Do this nice and early. */
 897         bufferevent_disable(bev2, EV_READ);
 898
 899         /* bev1 will try to write and read.  Both will time out. */
 900         evutil_gettimeofday(&started_at, NULL);
 901         tv_w.tv_sec = tv_r.tv_sec = 0;
 902         tv_w.tv_usec = 100*1000;
 903         tv_r.tv_usec = 150*1000;
 904         bufferevent_setcb(bev1, NULL, bev_timeout_write_cb,
 905             bev_timeout_event_cb, &res1);
 906         bufferevent_setwatermark(bev1, EV_WRITE, 1024*1024+10, 0);
 907         bufferevent_set_timeouts(bev1, &tv_r, &tv_w);
 908         if (use_pair) {
 909                 /* For a pair, the fact that the other side isn't reading
 910                  * makes the writer stall */
 911                 bufferevent_write(bev1, "ABCDEFG", 7);
 912         } else {
 913                 /* For a real socket, the kernel's TCP buffers can eat a
 914                  * fair number of bytes; make sure that at some point we
 915                  * have some bytes that will stall. */
 916                 struct evbuffer *output = bufferevent_get_output(bev1);
 917                 int i;
 918                 memset(buf, 0xbb, sizeof(buf));
 919                 for (i=0;i<1024;++i) {
 920                         evbuffer_add_reference(output, buf, sizeof(buf),
 921                             NULL, NULL);
 922                 }
 923         }
 924         bufferevent_enable(bev1, EV_READ|EV_WRITE);
 925
 926         /* bev2 has nothing to say, and isn't listening. */
 927         bufferevent_setcb(bev2, NULL,  bev_timeout_write_cb,
 928             bev_timeout_event_cb, &res2);
 929         tv_w.tv_sec = tv_r.tv_sec = 0;
 930         tv_w.tv_usec = 200*1000;
 931         tv_r.tv_usec = 100*1000;
 932         bufferevent_set_timeouts(bev2, &tv_r, &tv_w);
 933         bufferevent_enable(bev2, EV_WRITE);
 934
 935         tv_r.tv_sec = 0;
 936         tv_r.tv_usec = 350000;
 937
 938         event_base_loopexit(data->base, &tv_r);
 939         event_base_dispatch(data->base);
 940
 941         /* XXXX Test that actually reading or writing a little resets the
 942          * timeouts. */
 943
 944         /* Each buf1 timeout happens, and happens only once. */
 945         tt_want(res1.n_read_timeouts);
 946         tt_want(res1.n_write_timeouts);
 947         tt_want(res1.n_read_timeouts == 1);
 948         tt_want(res1.n_write_timeouts == 1);
 949
 950         test_timeval_diff_eq(&started_at, &res1.read_timeout_at, 150);
 951         test_timeval_diff_eq(&started_at, &res1.write_timeout_at, 100);
 952
 953 end:
 954         if (bev1)
 955                 bufferevent_free(bev1);
 956         if (bev2)
 957                 bufferevent_free(bev2);
 958 }
 959
 960 static void
 961 trigger_failure_cb(evutil_socket_t fd, short what, void *ctx)
 962 {
 963         TT_FAIL(("The triggered callback did not fire or the machine is really slow (try increasing timeout)."));
 964 }
 965
 966 static void
 967 trigger_eventcb(struct bufferevent *bev, short what, void *ctx)
 968 {
 969         struct event_base *base = ctx;
 970         if (what == ~0) {
 971                 TT_BLATHER(("Event successfully triggered."));
 972                 event_base_loopexit(base, NULL);
 973                 return;
 974         }
 975         reader_eventcb(bev, what, ctx);
 976 }
 977
 978 static void
 979 trigger_readcb_triggered(struct bufferevent *bev, void *ctx)
 980 {
 981         TT_BLATHER(("Read successfully triggered."));
 982         n_reads_invoked++;
 983         bufferevent_trigger_event(bev, ~0, bufferevent_trigger_test_flags);
 984 }
 985
 986 static void
 987 trigger_readcb(struct bufferevent *bev, void *ctx)
 988 {
 989         struct timeval timeout = { 30, 0 };
 990         struct event_base *base = ctx;
 991         size_t low, high, len;
 992         int expected_reads;
 993
 994         TT_BLATHER(("Read invoked on %d.", (int)bufferevent_getfd(bev)));
 995         expected_reads = ++n_reads_invoked;
 996
 997         bufferevent_setcb(bev, trigger_readcb_triggered, NULL, trigger_eventcb, ctx);
 998
 999         bufferevent_getwatermark(bev, EV_READ, &low, &high);
1000         len = evbuffer_get_length(bufferevent_get_input(bev));
1001
1002         bufferevent_setwatermark(bev, EV_READ, len + 1, 0);
1003         bufferevent_trigger(bev, EV_READ, bufferevent_trigger_test_flags);
1004         /* no callback expected */
1005         tt_int_op(n_reads_invoked, ==, expected_reads);
1006
1007         if ((bufferevent_trigger_test_flags & BEV_TRIG_DEFER_CALLBACKS) ||
1008             (bufferevent_connect_test_flags & BEV_OPT_DEFER_CALLBACKS)) {
1009                 /* will be deferred */
1010         } else {
1011                 expected_reads++;
1012         }
1013
1014         event_base_once(base, -1, EV_TIMEOUT, trigger_failure_cb, NULL, &timeout);
1015
1016         bufferevent_trigger(bev, EV_READ,
1017             bufferevent_trigger_test_flags | BEV_TRIG_IGNORE_WATERMARKS);
1018         tt_int_op(n_reads_invoked, ==, expected_reads);
1019
1020         bufferevent_setwatermark(bev, EV_READ, low, high);
1021 end:
1022         ;
1023 }
1024
1025 static void
1026 test_bufferevent_trigger(void *arg)
1027 {
1028         struct basic_test_data *data = arg;
1029         struct evconnlistener *lev=NULL;
1030         struct bufferevent *bev=NULL;
1031         struct sockaddr_in localhost;
1032         struct sockaddr_storage ss;
1033         struct sockaddr *sa;
1034         ev_socklen_t slen;
1035
1036         int be_flags=BEV_OPT_CLOSE_ON_FREE;
1037         int trig_flags=0;
1038
1039         if (strstr((char*)data->setup_data, "defer")) {
1040                 be_flags |= BEV_OPT_DEFER_CALLBACKS;
1041         }
1042         bufferevent_connect_test_flags = be_flags;
1043
1044         if (strstr((char*)data->setup_data, "postpone")) {
1045                 trig_flags |= BEV_TRIG_DEFER_CALLBACKS;
1046         }
1047         bufferevent_trigger_test_flags = trig_flags;
1048
1049         memset(&localhost, 0, sizeof(localhost));
1050
1051         localhost.sin_port = 0; /* pick-a-port */
1052         localhost.sin_addr.s_addr = htonl(0x7f000001L);
1053         localhost.sin_family = AF_INET;
1054         sa = (struct sockaddr *)&localhost;
1055         lev = evconnlistener_new_bind(data->base, listen_cb, data->base,
1056             LEV_OPT_CLOSE_ON_FREE|LEV_OPT_REUSEABLE,
1057             16, sa, sizeof(localhost));
1058         tt_assert(lev);
1059
1060         sa = (struct sockaddr *)&ss;
1061         slen = sizeof(ss);
1062         if (regress_get_listener_addr(lev, sa, &slen) < 0) {
1063                 tt_abort_perror("getsockname");
1064         }
1065
1066         tt_assert(!evconnlistener_enable(lev));
1067         bev = bufferevent_socket_new(data->base, -1, be_flags);
1068         tt_assert(bev);
1069         bufferevent_setcb(bev, trigger_readcb, NULL, trigger_eventcb, data->base);
1070
1071         bufferevent_enable(bev, EV_READ);
1072
1073         tt_want(!bufferevent_socket_connect(bev, sa, sizeof(localhost)));
1074
1075         event_base_dispatch(data->base);
1076
1077         tt_int_op(n_reads_invoked, ==, 2);
1078 end:
1079         if (lev)
1080                 evconnlistener_free(lev);
1081
1082         if (bev)
1083                 bufferevent_free(bev);
1084 }
1085
1086 struct testcase_t bufferevent_testcases[] = {
1087
1088         LEGACY(bufferevent, TT_ISOLATED),
1089         LEGACY(bufferevent_pair, TT_ISOLATED),
1090 #if defined(EVTHREAD_USE_PTHREADS_IMPLEMENTED)
1091         { "bufferevent_pair_release_lock", test_bufferevent_pair_release_lock,
1092           TT_FORK|TT_ISOLATED|TT_NEED_THREADS|TT_NEED_BASE|TT_LEGACY,
1093           &basic_setup, NULL },
1094 #endif
1095         LEGACY(bufferevent_watermarks, TT_ISOLATED),
1096         LEGACY(bufferevent_pair_watermarks, TT_ISOLATED),
1097         LEGACY(bufferevent_filters, TT_ISOLATED),
1098         LEGACY(bufferevent_pair_filters, TT_ISOLATED),
1099         { "bufferevent_connect", test_bufferevent_connect, TT_FORK|TT_NEED_BASE,
1100           &basic_setup, (void*)"" },
1101         { "bufferevent_connect_defer", test_bufferevent_connect,
1102           TT_FORK|TT_NEED_BASE, &basic_setup, (void*)"defer" },
1103         { "bufferevent_connect_lock", test_bufferevent_connect,
1104           TT_FORK|TT_NEED_BASE|TT_NEED_THREADS, &basic_setup, (void*)"lock" },
1105         { "bufferevent_connect_lock_defer", test_bufferevent_connect,
1106           TT_FORK|TT_NEED_BASE|TT_NEED_THREADS, &basic_setup,
1107           (void*)"defer lock" },
1108         { "bufferevent_connect_unlocked_cbs", test_bufferevent_connect,
1109           TT_FORK|TT_NEED_BASE|TT_NEED_THREADS, &basic_setup,
1110           (void*)"lock defer unlocked" },
1111         { "bufferevent_connect_fail", test_bufferevent_connect_fail,
1112           TT_FORK|TT_NEED_BASE, &basic_setup, NULL },
1113         { "bufferevent_timeout", test_bufferevent_timeouts,
1114           TT_FORK|TT_NEED_BASE|TT_NEED_SOCKETPAIR, &basic_setup, (void*)"" },
1115         { "bufferevent_timeout_pair", test_bufferevent_timeouts,
1116           TT_FORK|TT_NEED_BASE, &basic_setup, (void*)"pair" },
1117         { "bufferevent_timeout_filter", test_bufferevent_timeouts,
1118           TT_FORK|TT_NEED_BASE, &basic_setup, (void*)"filter" },
1119         { "bufferevent_timeout_filter_pair", test_bufferevent_timeouts,
1120           TT_FORK|TT_NEED_BASE, &basic_setup, (void*)"filter pair" },
1121         { "bufferevent_trigger", test_bufferevent_trigger, TT_FORK|TT_NEED_BASE,
1122           &basic_setup, (void*)"" },
1123         { "bufferevent_trigger_defer", test_bufferevent_trigger,
1124           TT_FORK|TT_NEED_BASE, &basic_setup, (void*)"defer" },
1125         { "bufferevent_trigger_postpone", test_bufferevent_trigger,
1126           TT_FORK|TT_NEED_BASE|TT_NEED_THREADS, &basic_setup,
1127           (void*)"postpone" },
1128         { "bufferevent_trigger_defer_postpone", test_bufferevent_trigger,
1129           TT_FORK|TT_NEED_BASE|TT_NEED_THREADS, &basic_setup,
1130           (void*)"defer postpone" },
1131 #ifdef EVENT__HAVE_LIBZ
1132         LEGACY(bufferevent_zlib, TT_ISOLATED),
1133 #else
1134         { "bufferevent_zlib", NULL, TT_SKIP, NULL, NULL },
1135 #endif
1136
1137         END_OF_TESTCASES,
1138 };
1139
1140 struct testcase_t bufferevent_iocp_testcases[] = {
1141
1142         LEGACY(bufferevent, TT_ISOLATED|TT_ENABLE_IOCP),
1143         LEGACY(bufferevent_watermarks, TT_ISOLATED|TT_ENABLE_IOCP),
1144         LEGACY(bufferevent_filters, TT_ISOLATED|TT_ENABLE_IOCP),
1145         { "bufferevent_connect", test_bufferevent_connect,
1146           TT_FORK|TT_NEED_BASE|TT_ENABLE_IOCP, &basic_setup, (void*)"" },
1147         { "bufferevent_connect_defer", test_bufferevent_connect,
1148           TT_FORK|TT_NEED_BASE|TT_ENABLE_IOCP, &basic_setup, (void*)"defer" },
1149         { "bufferevent_connect_lock", test_bufferevent_connect,
1150           TT_FORK|TT_NEED_BASE|TT_NEED_THREADS|TT_ENABLE_IOCP, &basic_setup,
1151           (void*)"lock" },
1152         { "bufferevent_connect_lock_defer", test_bufferevent_connect,
1153           TT_FORK|TT_NEED_BASE|TT_NEED_THREADS|TT_ENABLE_IOCP, &basic_setup,
1154           (void*)"defer lock" },
1155         { "bufferevent_connect_fail", test_bufferevent_connect_fail,
1156           TT_FORK|TT_NEED_BASE|TT_ENABLE_IOCP, &basic_setup, NULL },
1157         { "bufferevent_connect_nonblocking", test_bufferevent_connect,
1158           TT_FORK|TT_NEED_BASE|TT_ENABLE_IOCP, &basic_setup,
1159           (void*)"unset_connectex" },
1160
1161         END_OF_TESTCASES,
1162 };