release/src/router/dnscrypt/src/libevent/test/regress_rpc.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
  28 /* The old tests here need assertions to work. */
  29 #undef NDEBUG
  30
  31 #ifdef WIN32
  32 #include <winsock2.h>
  33 #include <windows.h>
  34 #endif
  35
  36 #include "event2/event-config.h"
  37
  38 #include <sys/types.h>
  39 #include <sys/stat.h>
  40 #ifdef _EVENT_HAVE_SYS_TIME_H
  41 #include <sys/time.h>
  42 #endif
  43 #include <sys/queue.h>
  44 #ifndef WIN32
  45 #include <sys/socket.h>
  46 #include <signal.h>
  47 #include <unistd.h>
  48 #include <netdb.h>
  49 #endif
  50 #include <fcntl.h>
  51 #include <stdlib.h>
  52 #include <stdio.h>
  53 #include <string.h>
  54 #include <errno.h>
  55 #include <assert.h>
  56
  57 #include "event2/buffer.h"
  58 #include "event2/event.h"
  59 #include "event2/event_compat.h"
  60 #include "event2/http.h"
  61 #include "event2/http_compat.h"
  62 #include "event2/http_struct.h"
  63 #include "event2/rpc.h"
  64 #include "event2/rpc.h"
  65 #include "event2/rpc_struct.h"
  66 #include "event2/tag.h"
  67 #include "log-internal.h"
  68
  69 #include "regress.gen.h"
  70
  71 #include "regress.h"
  72 #include "regress_testutils.h"
  73
  74 #ifndef NO_PYTHON_EXISTS
  75
  76 static struct evhttp *
  77 http_setup(ev_uint16_t *pport)
  78 {
  79         struct evhttp *myhttp;
  80         ev_uint16_t port;
  81         struct evhttp_bound_socket *sock;
  82
  83         myhttp = evhttp_new(NULL);
  84         if (!myhttp)
  85                 event_errx(1, "Could not start web server");
  86
  87         /* Try a few different ports */
  88         sock = evhttp_bind_socket_with_handle(myhttp, "127.0.0.1", 0);
  89         if (!sock)
  90                 event_errx(1, "Couldn't open web port");
  91
  92         port = regress_get_socket_port(evhttp_bound_socket_get_fd(sock));
  93
  94         *pport = port;
  95         return (myhttp);
  96 }
  97
  98 EVRPC_HEADER(Message, msg, kill)
  99 EVRPC_HEADER(NeverReply, msg, kill)
 100
 101 EVRPC_GENERATE(Message, msg, kill)
 102 EVRPC_GENERATE(NeverReply, msg, kill)
 103
 104 static int need_input_hook = 0;
 105 static int need_output_hook = 0;
 106
 107 static void
 108 MessageCb(EVRPC_STRUCT(Message)* rpc, void *arg)
 109 {
 110         struct kill* kill_reply = rpc->reply;
 111
 112         if (need_input_hook) {
 113                 struct evhttp_request* req = EVRPC_REQUEST_HTTP(rpc);
 114                 const char *header = evhttp_find_header(
 115                         req->input_headers, "X-Hook");
 116                 assert(strcmp(header, "input") == 0);
 117         }
 118
 119         /* we just want to fill in some non-sense */
 120         EVTAG_ASSIGN(kill_reply, weapon, "dagger");
 121         EVTAG_ASSIGN(kill_reply, action, "wave around like an idiot");
 122
 123         /* no reply to the RPC */
 124         EVRPC_REQUEST_DONE(rpc);
 125 }
 126
 127 static EVRPC_STRUCT(NeverReply) *saved_rpc;
 128
 129 static void
 130 NeverReplyCb(EVRPC_STRUCT(NeverReply)* rpc, void *arg)
 131 {
 132         test_ok += 1;
 133         saved_rpc = rpc;
 134 }
 135
 136 static void
 137 rpc_setup(struct evhttp **phttp, ev_uint16_t *pport, struct evrpc_base **pbase)
 138 {
 139         ev_uint16_t port;
 140         struct evhttp *http = NULL;
 141         struct evrpc_base *base = NULL;
 142
 143         http = http_setup(&port);
 144         base = evrpc_init(http);
 145
 146         EVRPC_REGISTER(base, Message, msg, kill, MessageCb, NULL);
 147         EVRPC_REGISTER(base, NeverReply, msg, kill, NeverReplyCb, NULL);
 148
 149         *phttp = http;
 150         *pport = port;
 151         *pbase = base;
 152
 153         need_input_hook = 0;
 154         need_output_hook = 0;
 155 }
 156
 157 static void
 158 rpc_teardown(struct evrpc_base *base)
 159 {
 160         assert(EVRPC_UNREGISTER(base, Message) == 0);
 161         assert(EVRPC_UNREGISTER(base, NeverReply) == 0);
 162
 163         evrpc_free(base);
 164 }
 165
 166 static void
 167 rpc_postrequest_failure(struct evhttp_request *req, void *arg)
 168 {
 169         if (req->response_code != HTTP_SERVUNAVAIL) {
 170
 171                 fprintf(stderr, "FAILED (response code)\n");
 172                 exit(1);
 173         }
 174
 175         test_ok = 1;
 176         event_loopexit(NULL);
 177 }
 178
 179 /*
 180  * Test a malformed payload submitted as an RPC
 181  */
 182
 183 static void
 184 rpc_basic_test(void)
 185 {
 186         ev_uint16_t port;
 187         struct evhttp *http = NULL;
 188         struct evrpc_base *base = NULL;
 189         struct evhttp_connection *evcon = NULL;
 190         struct evhttp_request *req = NULL;
 191
 192         rpc_setup(&http, &port, &base);
 193
 194         evcon = evhttp_connection_new("127.0.0.1", port);
 195         tt_assert(evcon);
 196
 197         /*
 198          * At this point, we want to schedule an HTTP POST request
 199          * server using our make request method.
 200          */
 201
 202         req = evhttp_request_new(rpc_postrequest_failure, NULL);
 203         tt_assert(req);
 204
 205         /* Add the information that we care about */
 206         evhttp_add_header(req->output_headers, "Host", "somehost");
 207         evbuffer_add_printf(req->output_buffer, "Some Nonsense");
 208
 209         if (evhttp_make_request(evcon, req,
 210                 EVHTTP_REQ_POST,
 211                 "/.rpc.Message") == -1) {
 212                 tt_abort();
 213         }
 214
 215         test_ok = 0;
 216
 217         event_dispatch();
 218
 219         evhttp_connection_free(evcon);
 220
 221         rpc_teardown(base);
 222
 223         tt_assert(test_ok == 1);
 224
 225 end:
 226         evhttp_free(http);
 227 }
 228
 229 static void
 230 rpc_postrequest_done(struct evhttp_request *req, void *arg)
 231 {
 232         struct kill* kill_reply = NULL;
 233
 234         if (req->response_code != HTTP_OK) {
 235                 fprintf(stderr, "FAILED (response code)\n");
 236                 exit(1);
 237         }
 238
 239         kill_reply = kill_new();
 240
 241         if ((kill_unmarshal(kill_reply, req->input_buffer)) == -1) {
 242                 fprintf(stderr, "FAILED (unmarshal)\n");
 243                 exit(1);
 244         }
 245
 246         kill_free(kill_reply);
 247
 248         test_ok = 1;
 249         event_loopexit(NULL);
 250 }
 251
 252 static void
 253 rpc_basic_message(void)
 254 {
 255         ev_uint16_t port;
 256         struct evhttp *http = NULL;
 257         struct evrpc_base *base = NULL;
 258         struct evhttp_connection *evcon = NULL;
 259         struct evhttp_request *req = NULL;
 260         struct msg *msg;
 261
 262         rpc_setup(&http, &port, &base);
 263
 264         evcon = evhttp_connection_new("127.0.0.1", port);
 265         tt_assert(evcon);
 266
 267         /*
 268          * At this point, we want to schedule an HTTP POST request
 269          * server using our make request method.
 270          */
 271
 272         req = evhttp_request_new(rpc_postrequest_done, NULL);
 273         if (req == NULL) {
 274                 fprintf(stdout, "FAILED\n");
 275                 exit(1);
 276         }
 277
 278         /* Add the information that we care about */
 279         evhttp_add_header(req->output_headers, "Host", "somehost");
 280
 281         /* set up the basic message */
 282         msg = msg_new();
 283         EVTAG_ASSIGN(msg, from_name, "niels");
 284         EVTAG_ASSIGN(msg, to_name, "tester");
 285         msg_marshal(req->output_buffer, msg);
 286         msg_free(msg);
 287
 288         if (evhttp_make_request(evcon, req,
 289                 EVHTTP_REQ_POST,
 290                 "/.rpc.Message") == -1) {
 291                 fprintf(stdout, "FAILED\n");
 292                 exit(1);
 293         }
 294
 295         test_ok = 0;
 296
 297         event_dispatch();
 298
 299         evhttp_connection_free(evcon);
 300
 301         rpc_teardown(base);
 302
 303 end:
 304         evhttp_free(http);
 305 }
 306
 307 static struct evrpc_pool *
 308 rpc_pool_with_connection(ev_uint16_t port)
 309 {
 310         struct evhttp_connection *evcon;
 311         struct evrpc_pool *pool;
 312
 313         pool = evrpc_pool_new(NULL);
 314         assert(pool != NULL);
 315
 316         evcon = evhttp_connection_new("127.0.0.1", port);
 317         assert(evcon != NULL);
 318
 319         evrpc_pool_add_connection(pool, evcon);
 320
 321         return (pool);
 322 }
 323
 324 static void
 325 GotKillCb(struct evrpc_status *status,
 326     struct msg *msg, struct kill *kill, void *arg)
 327 {
 328         char *weapon;
 329         char *action;
 330
 331         if (need_output_hook) {
 332                 struct evhttp_request *req = status->http_req;
 333                 const char *header = evhttp_find_header(
 334                         req->input_headers, "X-Pool-Hook");
 335                 assert(strcmp(header, "ran") == 0);
 336         }
 337
 338         if (status->error != EVRPC_STATUS_ERR_NONE)
 339                 goto done;
 340
 341         if (EVTAG_GET(kill, weapon, &weapon) == -1) {
 342                 fprintf(stderr, "get weapon\n");
 343                 goto done;
 344         }
 345         if (EVTAG_GET(kill, action, &action) == -1) {
 346                 fprintf(stderr, "get action\n");
 347                 goto done;
 348         }
 349
 350         if (strcmp(weapon, "dagger"))
 351                 goto done;
 352
 353         if (strcmp(action, "wave around like an idiot"))
 354                 goto done;
 355
 356         test_ok += 1;
 357
 358 done:
 359         event_loopexit(NULL);
 360 }
 361
 362 static void
 363 GotKillCbTwo(struct evrpc_status *status,
 364     struct msg *msg, struct kill *kill, void *arg)
 365 {
 366         char *weapon;
 367         char *action;
 368
 369         if (status->error != EVRPC_STATUS_ERR_NONE)
 370                 goto done;
 371
 372         if (EVTAG_GET(kill, weapon, &weapon) == -1) {
 373                 fprintf(stderr, "get weapon\n");
 374                 goto done;
 375         }
 376         if (EVTAG_GET(kill, action, &action) == -1) {
 377                 fprintf(stderr, "get action\n");
 378                 goto done;
 379         }
 380
 381         if (strcmp(weapon, "dagger"))
 382                 goto done;
 383
 384         if (strcmp(action, "wave around like an idiot"))
 385                 goto done;
 386
 387         test_ok += 1;
 388
 389 done:
 390         if (test_ok == 2)
 391                 event_loopexit(NULL);
 392 }
 393
 394 static int
 395 rpc_hook_add_header(void *ctx, struct evhttp_request *req,
 396     struct evbuffer *evbuf, void *arg)
 397 {
 398         const char *hook_type = arg;
 399         if (strcmp("input", hook_type) == 0)
 400                 evhttp_add_header(req->input_headers, "X-Hook", hook_type);
 401         else
 402                 evhttp_add_header(req->output_headers, "X-Hook", hook_type);
 403
 404         assert(evrpc_hook_get_connection(ctx) != NULL);
 405
 406         return (EVRPC_CONTINUE);
 407 }
 408
 409 static int
 410 rpc_hook_add_meta(void *ctx, struct evhttp_request *req,
 411     struct evbuffer *evbuf, void *arg)
 412 {
 413         evrpc_hook_add_meta(ctx, "meta", "test", 5);
 414
 415         assert(evrpc_hook_get_connection(ctx) != NULL);
 416
 417         return (EVRPC_CONTINUE);
 418 }
 419
 420 static int
 421 rpc_hook_remove_header(void *ctx, struct evhttp_request *req,
 422     struct evbuffer *evbuf, void *arg)
 423 {
 424         const char *header = evhttp_find_header(req->input_headers, "X-Hook");
 425         void *data = NULL;
 426         size_t data_len = 0;
 427
 428         assert(header != NULL);
 429         assert(strcmp(header, arg) == 0);
 430
 431         evhttp_remove_header(req->input_headers, "X-Hook");
 432         evhttp_add_header(req->input_headers, "X-Pool-Hook", "ran");
 433
 434         assert(evrpc_hook_find_meta(ctx, "meta", &data, &data_len) == 0);
 435         assert(data != NULL);
 436         assert(data_len == 5);
 437
 438         assert(evrpc_hook_get_connection(ctx) != NULL);
 439
 440         return (EVRPC_CONTINUE);
 441 }
 442
 443 static void
 444 rpc_basic_client(void)
 445 {
 446         ev_uint16_t port;
 447         struct evhttp *http = NULL;
 448         struct evrpc_base *base = NULL;
 449         struct evrpc_pool *pool = NULL;
 450         struct msg *msg = NULL;
 451         struct kill *kill = NULL;
 452
 453         rpc_setup(&http, &port, &base);
 454
 455         need_input_hook = 1;
 456         need_output_hook = 1;
 457
 458         assert(evrpc_add_hook(base, EVRPC_INPUT, rpc_hook_add_header, (void*)"input")
 459             != NULL);
 460         assert(evrpc_add_hook(base, EVRPC_OUTPUT, rpc_hook_add_header, (void*)"output")
 461             != NULL);
 462
 463         pool = rpc_pool_with_connection(port);
 464
 465         assert(evrpc_add_hook(pool, EVRPC_OUTPUT, rpc_hook_add_meta, NULL));
 466         assert(evrpc_add_hook(pool, EVRPC_INPUT, rpc_hook_remove_header, (void*)"output"));
 467
 468         /* set up the basic message */
 469         msg = msg_new();
 470         EVTAG_ASSIGN(msg, from_name, "niels");
 471         EVTAG_ASSIGN(msg, to_name, "tester");
 472
 473         kill = kill_new();
 474
 475         EVRPC_MAKE_REQUEST(Message, pool, msg, kill,  GotKillCb, NULL);
 476
 477         test_ok = 0;
 478
 479         event_dispatch();
 480
 481         tt_assert(test_ok == 1);
 482
 483         /* we do it twice to make sure that reuse works correctly */
 484         kill_clear(kill);
 485
 486         EVRPC_MAKE_REQUEST(Message, pool, msg, kill,  GotKillCb, NULL);
 487
 488         event_dispatch();
 489
 490         tt_assert(test_ok == 2);
 491
 492         /* we do it trice to make sure other stuff works, too */
 493         kill_clear(kill);
 494
 495         {
 496                 struct evrpc_request_wrapper *ctx =
 497                     EVRPC_MAKE_CTX(Message, msg, kill,
 498                         pool, msg, kill, GotKillCb, NULL);
 499                 evrpc_make_request(ctx);
 500         }
 501
 502         event_dispatch();
 503
 504         rpc_teardown(base);
 505
 506         tt_assert(test_ok == 3);
 507
 508 end:
 509         if (msg)
 510                 msg_free(msg);
 511         if (kill)
 512                 kill_free(kill);
 513
 514         if (pool)
 515                 evrpc_pool_free(pool);
 516         if (http)
 517                 evhttp_free(http);
 518
 519         need_input_hook = 0;
 520         need_output_hook = 0;
 521 }
 522
 523 /*
 524  * We are testing that the second requests gets send over the same
 525  * connection after the first RPCs completes.
 526  */
 527 static void
 528 rpc_basic_queued_client(void)
 529 {
 530         ev_uint16_t port;
 531         struct evhttp *http = NULL;
 532         struct evrpc_base *base = NULL;
 533         struct evrpc_pool *pool = NULL;
 534         struct msg *msg=NULL;
 535         struct kill *kill_one=NULL, *kill_two=NULL;
 536
 537         rpc_setup(&http, &port, &base);
 538
 539         pool = rpc_pool_with_connection(port);
 540
 541         /* set up the basic message */
 542         msg = msg_new();
 543         EVTAG_ASSIGN(msg, from_name, "niels");
 544         EVTAG_ASSIGN(msg, to_name, "tester");
 545
 546         kill_one = kill_new();
 547         kill_two = kill_new();
 548
 549         EVRPC_MAKE_REQUEST(Message, pool, msg, kill_one,  GotKillCbTwo, NULL);
 550         EVRPC_MAKE_REQUEST(Message, pool, msg, kill_two,  GotKillCb, NULL);
 551
 552         test_ok = 0;
 553
 554         event_dispatch();
 555
 556         rpc_teardown(base);
 557
 558         tt_assert(test_ok == 2);
 559
 560 end:
 561         if (msg)
 562                 msg_free(msg);
 563         if (kill_one)
 564                 kill_free(kill_one);
 565         if (kill_two)
 566                 kill_free(kill_two);
 567
 568         if (pool)
 569                 evrpc_pool_free(pool);
 570         if (http)
 571                 evhttp_free(http);
 572 }
 573
 574 static void
 575 GotErrorCb(struct evrpc_status *status,
 576     struct msg *msg, struct kill *kill, void *arg)
 577 {
 578         if (status->error != EVRPC_STATUS_ERR_TIMEOUT)
 579                 goto done;
 580
 581         /* should never be complete but just to check */
 582         if (kill_complete(kill) == 0)
 583                 goto done;
 584
 585         test_ok += 1;
 586
 587 done:
 588         event_loopexit(NULL);
 589 }
 590
 591 /* we just pause the rpc and continue it in the next callback */
 592
 593 struct _rpc_hook_ctx {
 594         void *vbase;
 595         void *ctx;
 596 };
 597
 598 static int hook_pause_cb_called=0;
 599
 600 static void
 601 rpc_hook_pause_cb(evutil_socket_t fd, short what, void *arg)
 602 {
 603         struct _rpc_hook_ctx *ctx = arg;
 604         ++hook_pause_cb_called;
 605         evrpc_resume_request(ctx->vbase, ctx->ctx, EVRPC_CONTINUE);
 606         free(arg);
 607 }
 608
 609 static int
 610 rpc_hook_pause(void *ctx, struct evhttp_request *req, struct evbuffer *evbuf,
 611     void *arg)
 612 {
 613         struct _rpc_hook_ctx *tmp = malloc(sizeof(*tmp));
 614         struct timeval tv;
 615
 616         assert(tmp != NULL);
 617         tmp->vbase = arg;
 618         tmp->ctx = ctx;
 619
 620         memset(&tv, 0, sizeof(tv));
 621         event_once(-1, EV_TIMEOUT, rpc_hook_pause_cb, tmp, &tv);
 622         return EVRPC_PAUSE;
 623 }
 624
 625 static void
 626 rpc_basic_client_with_pause(void)
 627 {
 628         ev_uint16_t port;
 629         struct evhttp *http = NULL;
 630         struct evrpc_base *base = NULL;
 631         struct evrpc_pool *pool = NULL;
 632         struct msg *msg = NULL;
 633         struct kill *kill= NULL;
 634
 635         rpc_setup(&http, &port, &base);
 636
 637         assert(evrpc_add_hook(base, EVRPC_INPUT, rpc_hook_pause, base));
 638         assert(evrpc_add_hook(base, EVRPC_OUTPUT, rpc_hook_pause, base));
 639
 640         pool = rpc_pool_with_connection(port);
 641
 642         assert(evrpc_add_hook(pool, EVRPC_INPUT, rpc_hook_pause, pool));
 643         assert(evrpc_add_hook(pool, EVRPC_OUTPUT, rpc_hook_pause, pool));
 644
 645         /* set up the basic message */
 646         msg = msg_new();
 647         EVTAG_ASSIGN(msg, from_name, "niels");
 648         EVTAG_ASSIGN(msg, to_name, "tester");
 649
 650         kill = kill_new();
 651
 652         EVRPC_MAKE_REQUEST(Message, pool, msg, kill, GotKillCb, NULL);
 653
 654         test_ok = 0;
 655
 656         event_dispatch();
 657
 658         tt_int_op(test_ok, ==, 1);
 659         tt_int_op(hook_pause_cb_called, ==, 4);
 660
 661 end:
 662         if (base)
 663                 rpc_teardown(base);
 664
 665         if (msg)
 666                 msg_free(msg);
 667         if (kill)
 668                 kill_free(kill);
 669
 670         if (pool)
 671                 evrpc_pool_free(pool);
 672         if (http)
 673                 evhttp_free(http);
 674 }
 675
 676 static void
 677 rpc_client_timeout(void)
 678 {
 679         ev_uint16_t port;
 680         struct evhttp *http = NULL;
 681         struct evrpc_base *base = NULL;
 682         struct evrpc_pool *pool = NULL;
 683         struct msg *msg = NULL;
 684         struct kill *kill = NULL;
 685
 686         rpc_setup(&http, &port, &base);
 687
 688         pool = rpc_pool_with_connection(port);
 689
 690         /* set the timeout to 5 seconds */
 691         evrpc_pool_set_timeout(pool, 5);
 692
 693         /* set up the basic message */
 694         msg = msg_new();
 695         EVTAG_ASSIGN(msg, from_name, "niels");
 696         EVTAG_ASSIGN(msg, to_name, "tester");
 697
 698         kill = kill_new();
 699
 700         EVRPC_MAKE_REQUEST(NeverReply, pool, msg, kill, GotErrorCb, NULL);
 701
 702         test_ok = 0;
 703
 704         event_dispatch();
 705
 706         /* free the saved RPC structure up */
 707         EVRPC_REQUEST_DONE(saved_rpc);
 708
 709         rpc_teardown(base);
 710
 711         tt_assert(test_ok == 2);
 712
 713 end:
 714         if (msg)
 715                 msg_free(msg);
 716         if (kill)
 717                 kill_free(kill);
 718
 719         if (pool)
 720                 evrpc_pool_free(pool);
 721         if (http)
 722                 evhttp_free(http);
 723 }
 724
 725 static void
 726 rpc_test(void)
 727 {
 728         struct msg *msg = NULL, *msg2 = NULL;
 729         struct kill *attack = NULL;
 730         struct run *run = NULL;
 731         struct evbuffer *tmp = evbuffer_new();
 732         struct timeval tv_start, tv_end;
 733         ev_uint32_t tag;
 734         int i;
 735
 736         msg = msg_new();
 737         EVTAG_ASSIGN(msg, from_name, "niels");
 738         EVTAG_ASSIGN(msg, to_name, "phoenix");
 739
 740         if (EVTAG_GET(msg, attack, &attack) == -1) {
 741                 tt_abort_msg("Failed to set kill message.");
 742         }
 743
 744         EVTAG_ASSIGN(attack, weapon, "feather");
 745         EVTAG_ASSIGN(attack, action, "tickle");
 746         for (i = 0; i < 3; ++i) {
 747                 if (EVTAG_ARRAY_ADD_VALUE(attack, how_often, i) == NULL) {
 748                         tt_abort_msg("Failed to add how_often.");
 749                 }
 750         }
 751
 752         evutil_gettimeofday(&tv_start, NULL);
 753         for (i = 0; i < 1000; ++i) {
 754                 run = EVTAG_ARRAY_ADD(msg, run);
 755                 if (run == NULL) {
 756                         tt_abort_msg("Failed to add run message.");
 757                 }
 758                 EVTAG_ASSIGN(run, how, "very fast but with some data in it");
 759                 EVTAG_ASSIGN(run, fixed_bytes,
 760                     (ev_uint8_t*)"012345678901234567890123");
 761
 762                 if (EVTAG_ARRAY_ADD_VALUE(
 763                             run, notes, "this is my note") == NULL) {
 764                         tt_abort_msg("Failed to add note.");
 765                 }
 766                 if (EVTAG_ARRAY_ADD_VALUE(run, notes, "pps") == NULL) {
 767                         tt_abort_msg("Failed to add note");
 768                 }
 769
 770                 EVTAG_ASSIGN(run, large_number, 0xdead0a0bcafebeefLL);
 771                 EVTAG_ARRAY_ADD_VALUE(run, other_numbers, 0xdead0a0b);
 772                 EVTAG_ARRAY_ADD_VALUE(run, other_numbers, 0xbeefcafe);
 773         }
 774
 775         if (msg_complete(msg) == -1)
 776                 tt_abort_msg("Failed to make complete message.");
 777
 778         evtag_marshal_msg(tmp, 0xdeaf, msg);
 779
 780         if (evtag_peek(tmp, &tag) == -1)
 781                 tt_abort_msg("Failed to peak tag.");
 782
 783         if (tag != 0xdeaf)
 784                 TT_DIE(("Got incorrect tag: %0x.", (unsigned)tag));
 785
 786         msg2 = msg_new();
 787         if (evtag_unmarshal_msg(tmp, 0xdeaf, msg2) == -1)
 788                 tt_abort_msg("Failed to unmarshal message.");
 789
 790         evutil_gettimeofday(&tv_end, NULL);
 791         evutil_timersub(&tv_end, &tv_start, &tv_end);
 792         TT_BLATHER(("(%.1f us/add) ",
 793                 (float)tv_end.tv_sec/(float)i * 1000000.0 +
 794                 tv_end.tv_usec / (float)i));
 795
 796         if (!EVTAG_HAS(msg2, from_name) ||
 797             !EVTAG_HAS(msg2, to_name) ||
 798             !EVTAG_HAS(msg2, attack)) {
 799                 tt_abort_msg("Missing data structures.");
 800         }
 801
 802         if (EVTAG_GET(msg2, attack, &attack) == -1) {
 803                 tt_abort_msg("Could not get attack.");
 804         }
 805
 806         if (EVTAG_ARRAY_LEN(msg2, run) != i) {
 807                 tt_abort_msg("Wrong number of run messages.");
 808         }
 809
 810         /* get the very first run message */
 811         if (EVTAG_ARRAY_GET(msg2, run, 0, &run) == -1) {
 812                 tt_abort_msg("Failed to get run msg.");
 813         } else {
 814                 /* verify the notes */
 815                 char *note_one, *note_two;
 816                 ev_uint64_t large_number;
 817                 ev_uint32_t short_number;
 818
 819                 if (EVTAG_ARRAY_LEN(run, notes) != 2) {
 820                         tt_abort_msg("Wrong number of note strings.");
 821                 }
 822
 823                 if (EVTAG_ARRAY_GET(run, notes, 0, &note_one) == -1 ||
 824                     EVTAG_ARRAY_GET(run, notes, 1, &note_two) == -1) {
 825                         tt_abort_msg("Could not get note strings.");
 826                 }
 827
 828                 if (strcmp(note_one, "this is my note") ||
 829                     strcmp(note_two, "pps")) {
 830                         tt_abort_msg("Incorrect note strings encoded.");
 831                 }
 832
 833                 if (EVTAG_GET(run, large_number, &large_number) == -1 ||
 834                     large_number != 0xdead0a0bcafebeefLL) {
 835                         tt_abort_msg("Incorrrect large_number.");
 836                 }
 837
 838                 if (EVTAG_ARRAY_LEN(run, other_numbers) != 2) {
 839                         tt_abort_msg("Wrong number of other_numbers.");
 840                 }
 841
 842                 if (EVTAG_ARRAY_GET(
 843                             run, other_numbers, 0, &short_number) == -1) {
 844                         tt_abort_msg("Could not get short number.");
 845                 }
 846                 tt_uint_op(short_number, ==, 0xdead0a0b);
 847
 848         }
 849         tt_int_op(EVTAG_ARRAY_LEN(attack, how_often), ==, 3);
 850
 851         for (i = 0; i < 3; ++i) {
 852                 ev_uint32_t res;
 853                 if (EVTAG_ARRAY_GET(attack, how_often, i, &res) == -1) {
 854                         TT_DIE(("Cannot get %dth how_often msg.", i));
 855                 }
 856                 if ((int)res != i) {
 857                         TT_DIE(("Wrong message encoded %d != %d", i, res));
 858                 }
 859         }
 860
 861         test_ok = 1;
 862 end:
 863         if (msg)
 864                 msg_free(msg);
 865         if (msg2)
 866                 msg_free(msg2);
 867         if (tmp)
 868                 evbuffer_free(tmp);
 869 }
 870
 871 #define RPC_LEGACY(name)                                                \
 872         { #name, run_legacy_test_fn, TT_FORK|TT_NEED_BASE|TT_LEGACY,    \
 873                     &legacy_setup,                                      \
 874                     rpc_##name }
 875 #else
 876 /* NO_PYTHON_EXISTS */
 877
 878 #define RPC_LEGACY(name) \
 879         { #name, NULL, TT_SKIP, NULL, NULL }
 880
 881 #endif
 882
 883 struct testcase_t rpc_testcases[] = {
 884         RPC_LEGACY(basic_test),
 885         RPC_LEGACY(basic_message),
 886         RPC_LEGACY(basic_client),
 887         RPC_LEGACY(basic_queued_client),
 888         RPC_LEGACY(basic_client_with_pause),
 889         RPC_LEGACY(client_timeout),
 890         RPC_LEGACY(test),
 891
 892         END_OF_TESTCASES,
 893 };