test/ssltestlib.c

   1 /*
   2  * Copyright 2016-2019 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <string.h>
  11
  12 #include "internal/nelem.h"
  13 #include "ssltestlib.h"
  14 #include "testutil.h"
  15 #include "e_os.h"
  16
  17 #ifdef OPENSSL_SYS_UNIX
  18 # include <unistd.h>
  19 #ifndef OPENSSL_NO_KTLS
  20 # include <netinet/in.h>
  21 # include <netinet/in.h>
  22 # include <arpa/inet.h>
  23 # include <sys/socket.h>
  24 # include <unistd.h>
  25 # include <fcntl.h>
  26 #endif
  27
  28 static ossl_inline void ossl_sleep(unsigned int millis) {
  29     usleep(millis * 1000);
  30 }
  31 #elif defined(_WIN32)
  32 # include <windows.h>
  33
  34 static ossl_inline void ossl_sleep(unsigned int millis) {
  35     Sleep(millis);
  36 }
  37 #else
  38 /* Fallback to a busy wait */
  39 static ossl_inline void ossl_sleep(unsigned int millis) {
  40     struct timeval start, now;
  41     unsigned int elapsedms;
  42
  43     gettimeofday(&start, NULL);
  44     do {
  45         gettimeofday(&now, NULL);
  46         elapsedms = (((now.tv_sec - start.tv_sec) * 1000000)
  47                      + now.tv_usec - start.tv_usec) / 1000;
  48     } while (elapsedms < millis);
  49 }
  50 #endif
  51
  52 static int tls_dump_new(BIO *bi);
  53 static int tls_dump_free(BIO *a);
  54 static int tls_dump_read(BIO *b, char *out, int outl);
  55 static int tls_dump_write(BIO *b, const char *in, int inl);
  56 static long tls_dump_ctrl(BIO *b, int cmd, long num, void *ptr);
  57 static int tls_dump_gets(BIO *bp, char *buf, int size);
  58 static int tls_dump_puts(BIO *bp, const char *str);
  59
  60 /* Choose a sufficiently large type likely to be unused for this custom BIO */
  61 #define BIO_TYPE_TLS_DUMP_FILTER  (0x80 | BIO_TYPE_FILTER)
  62 #define BIO_TYPE_MEMPACKET_TEST    0x81
  63
  64 static BIO_METHOD *method_tls_dump = NULL;
  65 static BIO_METHOD *meth_mem = NULL;
  66
  67 /* Note: Not thread safe! */
  68 const BIO_METHOD *bio_f_tls_dump_filter(void)
  69 {
  70     if (method_tls_dump == NULL) {
  71         method_tls_dump = BIO_meth_new(BIO_TYPE_TLS_DUMP_FILTER,
  72                                         "TLS dump filter");
  73         if (   method_tls_dump == NULL
  74             || !BIO_meth_set_write(method_tls_dump, tls_dump_write)
  75             || !BIO_meth_set_read(method_tls_dump, tls_dump_read)
  76             || !BIO_meth_set_puts(method_tls_dump, tls_dump_puts)
  77             || !BIO_meth_set_gets(method_tls_dump, tls_dump_gets)
  78             || !BIO_meth_set_ctrl(method_tls_dump, tls_dump_ctrl)
  79             || !BIO_meth_set_create(method_tls_dump, tls_dump_new)
  80             || !BIO_meth_set_destroy(method_tls_dump, tls_dump_free))
  81             return NULL;
  82     }
  83     return method_tls_dump;
  84 }
  85
  86 void bio_f_tls_dump_filter_free(void)
  87 {
  88     BIO_meth_free(method_tls_dump);
  89 }
  90
  91 static int tls_dump_new(BIO *bio)
  92 {
  93     BIO_set_init(bio, 1);
  94     return 1;
  95 }
  96
  97 static int tls_dump_free(BIO *bio)
  98 {
  99     BIO_set_init(bio, 0);
 100
 101     return 1;
 102 }
 103
 104 static void copy_flags(BIO *bio)
 105 {
 106     int flags;
 107     BIO *next = BIO_next(bio);
 108
 109     flags = BIO_test_flags(next, BIO_FLAGS_SHOULD_RETRY | BIO_FLAGS_RWS);
 110     BIO_clear_flags(bio, BIO_FLAGS_SHOULD_RETRY | BIO_FLAGS_RWS);
 111     BIO_set_flags(bio, flags);
 112 }
 113
 114 #define RECORD_CONTENT_TYPE     0
 115 #define RECORD_VERSION_HI       1
 116 #define RECORD_VERSION_LO       2
 117 #define RECORD_EPOCH_HI         3
 118 #define RECORD_EPOCH_LO         4
 119 #define RECORD_SEQUENCE_START   5
 120 #define RECORD_SEQUENCE_END     10
 121 #define RECORD_LEN_HI           11
 122 #define RECORD_LEN_LO           12
 123
 124 #define MSG_TYPE                0
 125 #define MSG_LEN_HI              1
 126 #define MSG_LEN_MID             2
 127 #define MSG_LEN_LO              3
 128 #define MSG_SEQ_HI              4
 129 #define MSG_SEQ_LO              5
 130 #define MSG_FRAG_OFF_HI         6
 131 #define MSG_FRAG_OFF_MID        7
 132 #define MSG_FRAG_OFF_LO         8
 133 #define MSG_FRAG_LEN_HI         9
 134 #define MSG_FRAG_LEN_MID        10
 135 #define MSG_FRAG_LEN_LO         11
 136
 137
 138 static void dump_data(const char *data, int len)
 139 {
 140     int rem, i, content, reclen, msglen, fragoff, fraglen, epoch;
 141     unsigned char *rec;
 142
 143     printf("---- START OF PACKET ----\n");
 144
 145     rem = len;
 146     rec = (unsigned char *)data;
 147
 148     while (rem > 0) {
 149         if (rem != len)
 150             printf("*\n");
 151         printf("*---- START OF RECORD ----\n");
 152         if (rem < DTLS1_RT_HEADER_LENGTH) {
 153             printf("*---- RECORD TRUNCATED ----\n");
 154             break;
 155         }
 156         content = rec[RECORD_CONTENT_TYPE];
 157         printf("** Record Content-type: %d\n", content);
 158         printf("** Record Version: %02x%02x\n",
 159                rec[RECORD_VERSION_HI], rec[RECORD_VERSION_LO]);
 160         epoch = (rec[RECORD_EPOCH_HI] << 8) | rec[RECORD_EPOCH_LO];
 161         printf("** Record Epoch: %d\n", epoch);
 162         printf("** Record Sequence: ");
 163         for (i = RECORD_SEQUENCE_START; i <= RECORD_SEQUENCE_END; i++)
 164             printf("%02x", rec[i]);
 165         reclen = (rec[RECORD_LEN_HI] << 8) | rec[RECORD_LEN_LO];
 166         printf("\n** Record Length: %d\n", reclen);
 167
 168         /* Now look at message */
 169         rec += DTLS1_RT_HEADER_LENGTH;
 170         rem -= DTLS1_RT_HEADER_LENGTH;
 171         if (content == SSL3_RT_HANDSHAKE) {
 172             printf("**---- START OF HANDSHAKE MESSAGE FRAGMENT ----\n");
 173             if (epoch > 0) {
 174                 printf("**---- HANDSHAKE MESSAGE FRAGMENT ENCRYPTED ----\n");
 175             } else if (rem < DTLS1_HM_HEADER_LENGTH
 176                     || reclen < DTLS1_HM_HEADER_LENGTH) {
 177                 printf("**---- HANDSHAKE MESSAGE FRAGMENT TRUNCATED ----\n");
 178             } else {
 179                 printf("*** Message Type: %d\n", rec[MSG_TYPE]);
 180                 msglen = (rec[MSG_LEN_HI] << 16) | (rec[MSG_LEN_MID] << 8)
 181                          | rec[MSG_LEN_LO];
 182                 printf("*** Message Length: %d\n", msglen);
 183                 printf("*** Message sequence: %d\n",
 184                        (rec[MSG_SEQ_HI] << 8) | rec[MSG_SEQ_LO]);
 185                 fragoff = (rec[MSG_FRAG_OFF_HI] << 16)
 186                           | (rec[MSG_FRAG_OFF_MID] << 8)
 187                           | rec[MSG_FRAG_OFF_LO];
 188                 printf("*** Message Fragment offset: %d\n", fragoff);
 189                 fraglen = (rec[MSG_FRAG_LEN_HI] << 16)
 190                           | (rec[MSG_FRAG_LEN_MID] << 8)
 191                           | rec[MSG_FRAG_LEN_LO];
 192                 printf("*** Message Fragment len: %d\n", fraglen);
 193                 if (fragoff + fraglen > msglen)
 194                     printf("***---- HANDSHAKE MESSAGE FRAGMENT INVALID ----\n");
 195                 else if (reclen < fraglen)
 196                     printf("**---- HANDSHAKE MESSAGE FRAGMENT TRUNCATED ----\n");
 197                 else
 198                     printf("**---- END OF HANDSHAKE MESSAGE FRAGMENT ----\n");
 199             }
 200         }
 201         if (rem < reclen) {
 202             printf("*---- RECORD TRUNCATED ----\n");
 203             rem = 0;
 204         } else {
 205             rec += reclen;
 206             rem -= reclen;
 207             printf("*---- END OF RECORD ----\n");
 208         }
 209     }
 210     printf("---- END OF PACKET ----\n\n");
 211     fflush(stdout);
 212 }
 213
 214 static int tls_dump_read(BIO *bio, char *out, int outl)
 215 {
 216     int ret;
 217     BIO *next = BIO_next(bio);
 218
 219     ret = BIO_read(next, out, outl);
 220     copy_flags(bio);
 221
 222     if (ret > 0) {
 223         dump_data(out, ret);
 224     }
 225
 226     return ret;
 227 }
 228
 229 static int tls_dump_write(BIO *bio, const char *in, int inl)
 230 {
 231     int ret;
 232     BIO *next = BIO_next(bio);
 233
 234     ret = BIO_write(next, in, inl);
 235     copy_flags(bio);
 236
 237     return ret;
 238 }
 239
 240 static long tls_dump_ctrl(BIO *bio, int cmd, long num, void *ptr)
 241 {
 242     long ret;
 243     BIO *next = BIO_next(bio);
 244
 245     if (next == NULL)
 246         return 0;
 247
 248     switch (cmd) {
 249     case BIO_CTRL_DUP:
 250         ret = 0L;
 251         break;
 252     default:
 253         ret = BIO_ctrl(next, cmd, num, ptr);
 254         break;
 255     }
 256     return ret;
 257 }
 258
 259 static int tls_dump_gets(BIO *bio, char *buf, int size)
 260 {
 261     /* We don't support this - not needed anyway */
 262     return -1;
 263 }
 264
 265 static int tls_dump_puts(BIO *bio, const char *str)
 266 {
 267     return tls_dump_write(bio, str, strlen(str));
 268 }
 269
 270
 271 struct mempacket_st {
 272     unsigned char *data;
 273     int len;
 274     unsigned int num;
 275     unsigned int type;
 276 };
 277
 278 static void mempacket_free(MEMPACKET *pkt)
 279 {
 280     if (pkt->data != NULL)
 281         OPENSSL_free(pkt->data);
 282     OPENSSL_free(pkt);
 283 }
 284
 285 typedef struct mempacket_test_ctx_st {
 286     STACK_OF(MEMPACKET) *pkts;
 287     unsigned int epoch;
 288     unsigned int currrec;
 289     unsigned int currpkt;
 290     unsigned int lastpkt;
 291     unsigned int injected;
 292     unsigned int noinject;
 293     unsigned int dropepoch;
 294     int droprec;
 295     int duprec;
 296 } MEMPACKET_TEST_CTX;
 297
 298 static int mempacket_test_new(BIO *bi);
 299 static int mempacket_test_free(BIO *a);
 300 static int mempacket_test_read(BIO *b, char *out, int outl);
 301 static int mempacket_test_write(BIO *b, const char *in, int inl);
 302 static long mempacket_test_ctrl(BIO *b, int cmd, long num, void *ptr);
 303 static int mempacket_test_gets(BIO *bp, char *buf, int size);
 304 static int mempacket_test_puts(BIO *bp, const char *str);
 305
 306 const BIO_METHOD *bio_s_mempacket_test(void)
 307 {
 308     if (meth_mem == NULL) {
 309         if (!TEST_ptr(meth_mem = BIO_meth_new(BIO_TYPE_MEMPACKET_TEST,
 310                                               "Mem Packet Test"))
 311             || !TEST_true(BIO_meth_set_write(meth_mem, mempacket_test_write))
 312             || !TEST_true(BIO_meth_set_read(meth_mem, mempacket_test_read))
 313             || !TEST_true(BIO_meth_set_puts(meth_mem, mempacket_test_puts))
 314             || !TEST_true(BIO_meth_set_gets(meth_mem, mempacket_test_gets))
 315             || !TEST_true(BIO_meth_set_ctrl(meth_mem, mempacket_test_ctrl))
 316             || !TEST_true(BIO_meth_set_create(meth_mem, mempacket_test_new))
 317             || !TEST_true(BIO_meth_set_destroy(meth_mem, mempacket_test_free)))
 318             return NULL;
 319     }
 320     return meth_mem;
 321 }
 322
 323 void bio_s_mempacket_test_free(void)
 324 {
 325     BIO_meth_free(meth_mem);
 326 }
 327
 328 static int mempacket_test_new(BIO *bio)
 329 {
 330     MEMPACKET_TEST_CTX *ctx;
 331
 332     if (!TEST_ptr(ctx = OPENSSL_zalloc(sizeof(*ctx))))
 333         return 0;
 334     if (!TEST_ptr(ctx->pkts = sk_MEMPACKET_new_null())) {
 335         OPENSSL_free(ctx);
 336         return 0;
 337     }
 338     ctx->dropepoch = 0;
 339     ctx->droprec = -1;
 340     BIO_set_init(bio, 1);
 341     BIO_set_data(bio, ctx);
 342     return 1;
 343 }
 344
 345 static int mempacket_test_free(BIO *bio)
 346 {
 347     MEMPACKET_TEST_CTX *ctx = BIO_get_data(bio);
 348
 349     sk_MEMPACKET_pop_free(ctx->pkts, mempacket_free);
 350     OPENSSL_free(ctx);
 351     BIO_set_data(bio, NULL);
 352     BIO_set_init(bio, 0);
 353     return 1;
 354 }
 355
 356 /* Record Header values */
 357 #define EPOCH_HI        3
 358 #define EPOCH_LO        4
 359 #define RECORD_SEQUENCE 10
 360 #define RECORD_LEN_HI   11
 361 #define RECORD_LEN_LO   12
 362
 363 #define STANDARD_PACKET                 0
 364
 365 static int mempacket_test_read(BIO *bio, char *out, int outl)
 366 {
 367     MEMPACKET_TEST_CTX *ctx = BIO_get_data(bio);
 368     MEMPACKET *thispkt;
 369     unsigned char *rec;
 370     int rem;
 371     unsigned int seq, offset, len, epoch;
 372
 373     BIO_clear_retry_flags(bio);
 374     thispkt = sk_MEMPACKET_value(ctx->pkts, 0);
 375     if (thispkt == NULL || thispkt->num != ctx->currpkt) {
 376         /* Probably run out of data */
 377         BIO_set_retry_read(bio);
 378         return -1;
 379     }
 380     (void)sk_MEMPACKET_shift(ctx->pkts);
 381     ctx->currpkt++;
 382
 383     if (outl > thispkt->len)
 384         outl = thispkt->len;
 385
 386     if (thispkt->type != INJECT_PACKET_IGNORE_REC_SEQ
 387             && (ctx->injected || ctx->droprec >= 0)) {
 388         /*
 389          * Overwrite the record sequence number. We strictly number them in
 390          * the order received. Since we are actually a reliable transport
 391          * we know that there won't be any re-ordering. We overwrite to deal
 392          * with any packets that have been injected
 393          */
 394         for (rem = thispkt->len, rec = thispkt->data; rem > 0; rem -= len) {
 395             if (rem < DTLS1_RT_HEADER_LENGTH)
 396                 return -1;
 397             epoch = (rec[EPOCH_HI] << 8) | rec[EPOCH_LO];
 398             if (epoch != ctx->epoch) {
 399                 ctx->epoch = epoch;
 400                 ctx->currrec = 0;
 401             }
 402             seq = ctx->currrec;
 403             offset = 0;
 404             do {
 405                 rec[RECORD_SEQUENCE - offset] = seq & 0xFF;
 406                 seq >>= 8;
 407                 offset++;
 408             } while (seq > 0);
 409
 410             len = ((rec[RECORD_LEN_HI] << 8) | rec[RECORD_LEN_LO])
 411                   + DTLS1_RT_HEADER_LENGTH;
 412             if (rem < (int)len)
 413                 return -1;
 414             if (ctx->droprec == (int)ctx->currrec && ctx->dropepoch == epoch) {
 415                 if (rem > (int)len)
 416                     memmove(rec, rec + len, rem - len);
 417                 outl -= len;
 418                 ctx->droprec = -1;
 419                 if (outl == 0)
 420                     BIO_set_retry_read(bio);
 421             } else {
 422                 rec += len;
 423             }
 424
 425             ctx->currrec++;
 426         }
 427     }
 428
 429     memcpy(out, thispkt->data, outl);
 430     mempacket_free(thispkt);
 431     return outl;
 432 }
 433
 434 int mempacket_test_inject(BIO *bio, const char *in, int inl, int pktnum,
 435                           int type)
 436 {
 437     MEMPACKET_TEST_CTX *ctx = BIO_get_data(bio);
 438     MEMPACKET *thispkt = NULL, *looppkt, *nextpkt, *allpkts[3];
 439     int i, duprec;
 440     const unsigned char *inu = (const unsigned char *)in;
 441     size_t len = ((inu[RECORD_LEN_HI] << 8) | inu[RECORD_LEN_LO])
 442                  + DTLS1_RT_HEADER_LENGTH;
 443
 444     if (ctx == NULL)
 445         return -1;
 446
 447     if ((size_t)inl < len)
 448         return -1;
 449
 450     if ((size_t)inl == len)
 451         duprec = 0;
 452     else
 453         duprec = ctx->duprec > 0;
 454
 455     /* We don't support arbitrary injection when duplicating records */
 456     if (duprec && pktnum != -1)
 457         return -1;
 458
 459     /* We only allow injection before we've started writing any data */
 460     if (pktnum >= 0) {
 461         if (ctx->noinject)
 462             return -1;
 463         ctx->injected  = 1;
 464     } else {
 465         ctx->noinject = 1;
 466     }
 467
 468     for (i = 0; i < (duprec ? 3 : 1); i++) {
 469         if (!TEST_ptr(allpkts[i] = OPENSSL_malloc(sizeof(*thispkt))))
 470             goto err;
 471         thispkt = allpkts[i];
 472
 473         if (!TEST_ptr(thispkt->data = OPENSSL_malloc(inl)))
 474             goto err;
 475         /*
 476          * If we are duplicating the packet, we duplicate it three times. The
 477          * first two times we drop the first record if there are more than one.
 478          * In this way we know that libssl will not be able to make progress
 479          * until it receives the last packet, and hence will be forced to
 480          * buffer these records.
 481          */
 482         if (duprec && i != 2) {
 483             memcpy(thispkt->data, in + len, inl - len);
 484             thispkt->len = inl - len;
 485         } else {
 486             memcpy(thispkt->data, in, inl);
 487             thispkt->len = inl;
 488         }
 489         thispkt->num = (pktnum >= 0) ? (unsigned int)pktnum : ctx->lastpkt + i;
 490         thispkt->type = type;
 491     }
 492
 493     for(i = 0; (looppkt = sk_MEMPACKET_value(ctx->pkts, i)) != NULL; i++) {
 494         /* Check if we found the right place to insert this packet */
 495         if (looppkt->num > thispkt->num) {
 496             if (sk_MEMPACKET_insert(ctx->pkts, thispkt, i) == 0)
 497                 goto err;
 498             /* If we're doing up front injection then we're done */
 499             if (pktnum >= 0)
 500                 return inl;
 501             /*
 502              * We need to do some accounting on lastpkt. We increment it first,
 503              * but it might now equal the value of injected packets, so we need
 504              * to skip over those
 505              */
 506             ctx->lastpkt++;
 507             do {
 508                 i++;
 509                 nextpkt = sk_MEMPACKET_value(ctx->pkts, i);
 510                 if (nextpkt != NULL && nextpkt->num == ctx->lastpkt)
 511                     ctx->lastpkt++;
 512                 else
 513                     return inl;
 514             } while(1);
 515         } else if (looppkt->num == thispkt->num) {
 516             if (!ctx->noinject) {
 517                 /* We injected two packets with the same packet number! */
 518                 goto err;
 519             }
 520             ctx->lastpkt++;
 521             thispkt->num++;
 522         }
 523     }
 524     /*
 525      * We didn't find any packets with a packet number equal to or greater than
 526      * this one, so we just add it onto the end
 527      */
 528     for (i = 0; i < (duprec ? 3 : 1); i++) {
 529         thispkt = allpkts[i];
 530         if (!sk_MEMPACKET_push(ctx->pkts, thispkt))
 531             goto err;
 532
 533         if (pktnum < 0)
 534             ctx->lastpkt++;
 535     }
 536
 537     return inl;
 538
 539  err:
 540     for (i = 0; i < (ctx->duprec > 0 ? 3 : 1); i++)
 541         mempacket_free(allpkts[i]);
 542     return -1;
 543 }
 544
 545 static int mempacket_test_write(BIO *bio, const char *in, int inl)
 546 {
 547     return mempacket_test_inject(bio, in, inl, -1, STANDARD_PACKET);
 548 }
 549
 550 static long mempacket_test_ctrl(BIO *bio, int cmd, long num, void *ptr)
 551 {
 552     long ret = 1;
 553     MEMPACKET_TEST_CTX *ctx = BIO_get_data(bio);
 554     MEMPACKET *thispkt;
 555
 556     switch (cmd) {
 557     case BIO_CTRL_EOF:
 558         ret = (long)(sk_MEMPACKET_num(ctx->pkts) == 0);
 559         break;
 560     case BIO_CTRL_GET_CLOSE:
 561         ret = BIO_get_shutdown(bio);
 562         break;
 563     case BIO_CTRL_SET_CLOSE:
 564         BIO_set_shutdown(bio, (int)num);
 565         break;
 566     case BIO_CTRL_WPENDING:
 567         ret = 0L;
 568         break;
 569     case BIO_CTRL_PENDING:
 570         thispkt = sk_MEMPACKET_value(ctx->pkts, 0);
 571         if (thispkt == NULL)
 572             ret = 0;
 573         else
 574             ret = thispkt->len;
 575         break;
 576     case BIO_CTRL_FLUSH:
 577         ret = 1;
 578         break;
 579     case MEMPACKET_CTRL_SET_DROP_EPOCH:
 580         ctx->dropepoch = (unsigned int)num;
 581         break;
 582     case MEMPACKET_CTRL_SET_DROP_REC:
 583         ctx->droprec = (int)num;
 584         break;
 585     case MEMPACKET_CTRL_GET_DROP_REC:
 586         ret = ctx->droprec;
 587         break;
 588     case MEMPACKET_CTRL_SET_DUPLICATE_REC:
 589         ctx->duprec = (int)num;
 590         break;
 591     case BIO_CTRL_RESET:
 592     case BIO_CTRL_DUP:
 593     case BIO_CTRL_PUSH:
 594     case BIO_CTRL_POP:
 595     default:
 596         ret = 0;
 597         break;
 598     }
 599     return ret;
 600 }
 601
 602 static int mempacket_test_gets(BIO *bio, char *buf, int size)
 603 {
 604     /* We don't support this - not needed anyway */
 605     return -1;
 606 }
 607
 608 static int mempacket_test_puts(BIO *bio, const char *str)
 609 {
 610     return mempacket_test_write(bio, str, strlen(str));
 611 }
 612
 613 int create_ssl_ctx_pair(const SSL_METHOD *sm, const SSL_METHOD *cm,
 614                         int min_proto_version, int max_proto_version,
 615                         SSL_CTX **sctx, SSL_CTX **cctx, char *certfile,
 616                         char *privkeyfile)
 617 {
 618     SSL_CTX *serverctx = NULL;
 619     SSL_CTX *clientctx = NULL;
 620
 621     if (!TEST_ptr(serverctx = SSL_CTX_new(sm))
 622             || (cctx != NULL && !TEST_ptr(clientctx = SSL_CTX_new(cm))))
 623         goto err;
 624
 625     if ((min_proto_version > 0
 626          && !TEST_true(SSL_CTX_set_min_proto_version(serverctx,
 627                                                      min_proto_version)))
 628         || (max_proto_version > 0
 629             && !TEST_true(SSL_CTX_set_max_proto_version(serverctx,
 630                                                         max_proto_version))))
 631         goto err;
 632     if (clientctx != NULL
 633         && ((min_proto_version > 0
 634              && !TEST_true(SSL_CTX_set_min_proto_version(clientctx,
 635                                                          min_proto_version)))
 636             || (max_proto_version > 0
 637                 && !TEST_true(SSL_CTX_set_max_proto_version(clientctx,
 638                                                             max_proto_version)))))
 639         goto err;
 640
 641     if (certfile != NULL && privkeyfile != NULL) {
 642         if (!TEST_int_eq(SSL_CTX_use_certificate_file(serverctx, certfile,
 643                                                       SSL_FILETYPE_PEM), 1)
 644                 || !TEST_int_eq(SSL_CTX_use_PrivateKey_file(serverctx,
 645                                                             privkeyfile,
 646                                                             SSL_FILETYPE_PEM), 1)
 647                 || !TEST_int_eq(SSL_CTX_check_private_key(serverctx), 1))
 648             goto err;
 649     }
 650
 651 #ifndef OPENSSL_NO_DH
 652     SSL_CTX_set_dh_auto(serverctx, 1);
 653 #endif
 654
 655     *sctx = serverctx;
 656     if (cctx != NULL)
 657         *cctx = clientctx;
 658     return 1;
 659
 660  err:
 661     SSL_CTX_free(serverctx);
 662     SSL_CTX_free(clientctx);
 663     return 0;
 664 }
 665
 666 #define MAXLOOPS    1000000
 667
 668 #if !defined(OPENSSL_NO_KTLS) && !defined(OPENSSL_NO_SOCK)
 669 static int set_nb(int fd)
 670 {
 671     int flags;
 672
 673     flags = fcntl(fd,F_GETFL,0);
 674     if (flags == -1)
 675         return flags;
 676     flags = fcntl(fd, F_SETFL, flags | O_NONBLOCK);
 677     return flags;
 678 }
 679
 680 int create_test_sockets(int *cfd, int *sfd)
 681 {
 682     struct sockaddr_in sin;
 683     const char *host = "127.0.0.1";
 684     int cfd_connected = 0, ret = 0;
 685     socklen_t slen = sizeof(sin);
 686     int afd = -1;
 687
 688     *cfd = -1;
 689     *sfd = -1;
 690
 691     memset ((char *) &sin, 0, sizeof(sin));
 692     sin.sin_family = AF_INET;
 693     sin.sin_addr.s_addr = inet_addr(host);
 694
 695     afd = socket(AF_INET, SOCK_STREAM, 0);
 696     if (afd < 0)
 697         return 0;
 698
 699     if (bind(afd, (struct sockaddr*)&sin, sizeof(sin)) < 0)
 700         goto out;
 701
 702     if (getsockname(afd, (struct sockaddr*)&sin, &slen) < 0)
 703         goto out;
 704
 705     if (listen(afd, 1) < 0)
 706         goto out;
 707
 708     *cfd = socket(AF_INET, SOCK_STREAM, 0);
 709     if (*cfd < 0)
 710         goto out;
 711
 712     if (set_nb(afd) == -1)
 713         goto out;
 714
 715     while (*sfd == -1 || !cfd_connected ) {
 716         *sfd = accept(afd, NULL, 0);
 717         if (*sfd == -1 && errno != EAGAIN)
 718             goto out;
 719
 720         if (!cfd_connected && connect(*cfd, (struct sockaddr*)&sin, sizeof(sin)) < 0)
 721             goto out;
 722         else
 723             cfd_connected = 1;
 724     }
 725
 726     if (set_nb(*cfd) == -1 || set_nb(*sfd) == -1)
 727         goto out;
 728     ret = 1;
 729     goto success;
 730
 731 out:
 732         if (*cfd != -1)
 733             close(*cfd);
 734         if (*sfd != -1)
 735             close(*sfd);
 736 success:
 737         if (afd != -1)
 738             close(afd);
 739     return ret;
 740 }
 741
 742 int create_ssl_objects2(SSL_CTX *serverctx, SSL_CTX *clientctx, SSL **sssl,
 743                           SSL **cssl, int sfd, int cfd)
 744 {
 745     SSL *serverssl = NULL, *clientssl = NULL;
 746     BIO *s_to_c_bio = NULL, *c_to_s_bio = NULL;
 747
 748     if (*sssl != NULL)
 749         serverssl = *sssl;
 750     else if (!TEST_ptr(serverssl = SSL_new(serverctx)))
 751         goto error;
 752     if (*cssl != NULL)
 753         clientssl = *cssl;
 754     else if (!TEST_ptr(clientssl = SSL_new(clientctx)))
 755         goto error;
 756
 757     if (!TEST_ptr(s_to_c_bio = BIO_new_socket(sfd, BIO_NOCLOSE))
 758             || !TEST_ptr(c_to_s_bio = BIO_new_socket(cfd, BIO_NOCLOSE)))
 759         goto error;
 760
 761     SSL_set_bio(clientssl, c_to_s_bio, c_to_s_bio);
 762     SSL_set_bio(serverssl, s_to_c_bio, s_to_c_bio);
 763     *sssl = serverssl;
 764     *cssl = clientssl;
 765     return 1;
 766
 767  error:
 768     SSL_free(serverssl);
 769     SSL_free(clientssl);
 770     BIO_free(s_to_c_bio);
 771     BIO_free(c_to_s_bio);
 772     return 0;
 773 }
 774 #endif
 775
 776 /*
 777  * NOTE: Transfers control of the BIOs - this function will free them on error
 778  */
 779 int create_ssl_objects(SSL_CTX *serverctx, SSL_CTX *clientctx, SSL **sssl,
 780                           SSL **cssl, BIO *s_to_c_fbio, BIO *c_to_s_fbio)
 781 {
 782     SSL *serverssl = NULL, *clientssl = NULL;
 783     BIO *s_to_c_bio = NULL, *c_to_s_bio = NULL;
 784
 785     if (*sssl != NULL)
 786         serverssl = *sssl;
 787     else if (!TEST_ptr(serverssl = SSL_new(serverctx)))
 788         goto error;
 789     if (*cssl != NULL)
 790         clientssl = *cssl;
 791     else if (!TEST_ptr(clientssl = SSL_new(clientctx)))
 792         goto error;
 793
 794     if (SSL_is_dtls(clientssl)) {
 795         if (!TEST_ptr(s_to_c_bio = BIO_new(bio_s_mempacket_test()))
 796                 || !TEST_ptr(c_to_s_bio = BIO_new(bio_s_mempacket_test())))
 797             goto error;
 798     } else {
 799         if (!TEST_ptr(s_to_c_bio = BIO_new(BIO_s_mem()))
 800                 || !TEST_ptr(c_to_s_bio = BIO_new(BIO_s_mem())))
 801             goto error;
 802     }
 803
 804     if (s_to_c_fbio != NULL
 805             && !TEST_ptr(s_to_c_bio = BIO_push(s_to_c_fbio, s_to_c_bio)))
 806         goto error;
 807     if (c_to_s_fbio != NULL
 808             && !TEST_ptr(c_to_s_bio = BIO_push(c_to_s_fbio, c_to_s_bio)))
 809         goto error;
 810
 811     /* Set Non-blocking IO behaviour */
 812     BIO_set_mem_eof_return(s_to_c_bio, -1);
 813     BIO_set_mem_eof_return(c_to_s_bio, -1);
 814
 815     /* Up ref these as we are passing them to two SSL objects */
 816     SSL_set_bio(serverssl, c_to_s_bio, s_to_c_bio);
 817     BIO_up_ref(s_to_c_bio);
 818     BIO_up_ref(c_to_s_bio);
 819     SSL_set_bio(clientssl, s_to_c_bio, c_to_s_bio);
 820     *sssl = serverssl;
 821     *cssl = clientssl;
 822     return 1;
 823
 824  error:
 825     SSL_free(serverssl);
 826     SSL_free(clientssl);
 827     BIO_free(s_to_c_bio);
 828     BIO_free(c_to_s_bio);
 829     BIO_free(s_to_c_fbio);
 830     BIO_free(c_to_s_fbio);
 831
 832     return 0;
 833 }
 834
 835 /*
 836  * Create an SSL connection, but does not ready any post-handshake
 837  * NewSessionTicket messages.
 838  */
 839 int create_bare_ssl_connection(SSL *serverssl, SSL *clientssl, int want)
 840 {
 841     int retc = -1, rets = -1, err, abortctr = 0;
 842     int clienterr = 0, servererr = 0;
 843     int isdtls = SSL_is_dtls(serverssl);
 844
 845     do {
 846         err = SSL_ERROR_WANT_WRITE;
 847         while (!clienterr && retc <= 0 && err == SSL_ERROR_WANT_WRITE) {
 848             retc = SSL_connect(clientssl);
 849             if (retc <= 0)
 850                 err = SSL_get_error(clientssl, retc);
 851         }
 852
 853         if (!clienterr && retc <= 0 && err != SSL_ERROR_WANT_READ) {
 854             TEST_info("SSL_connect() failed %d, %d", retc, err);
 855             clienterr = 1;
 856         }
 857         if (want != SSL_ERROR_NONE && err == want)
 858             return 0;
 859
 860         err = SSL_ERROR_WANT_WRITE;
 861         while (!servererr && rets <= 0 && err == SSL_ERROR_WANT_WRITE) {
 862             rets = SSL_accept(serverssl);
 863             if (rets <= 0)
 864                 err = SSL_get_error(serverssl, rets);
 865         }
 866
 867         if (!servererr && rets <= 0
 868                 && err != SSL_ERROR_WANT_READ
 869                 && err != SSL_ERROR_WANT_X509_LOOKUP) {
 870             TEST_info("SSL_accept() failed %d, %d", rets, err);
 871             servererr = 1;
 872         }
 873         if (want != SSL_ERROR_NONE && err == want)
 874             return 0;
 875         if (clienterr && servererr)
 876             return 0;
 877         if (isdtls) {
 878             if (rets > 0 && retc <= 0)
 879                 DTLSv1_handle_timeout(serverssl);
 880             if (retc > 0 && rets <= 0)
 881                 DTLSv1_handle_timeout(clientssl);
 882         }
 883         if (++abortctr == MAXLOOPS) {
 884             TEST_info("No progress made");
 885             return 0;
 886         }
 887         if (isdtls && abortctr <= 50 && (abortctr % 10) == 0) {
 888             /*
 889              * It looks like we're just spinning. Pause for a short period to
 890              * give the DTLS timer a chance to do something. We only do this for
 891              * the first few times to prevent hangs.
 892              */
 893             ossl_sleep(50);
 894         }
 895     } while (retc <=0 || rets <= 0);
 896
 897     return 1;
 898 }
 899
 900 /*
 901  * Create an SSL connection including any post handshake NewSessionTicket
 902  * messages.
 903  */
 904 int create_ssl_connection(SSL *serverssl, SSL *clientssl, int want)
 905 {
 906     int i;
 907     unsigned char buf;
 908     size_t readbytes;
 909
 910     if (!create_bare_ssl_connection(serverssl, clientssl, want))
 911         return 0;
 912
 913     /*
 914      * We attempt to read some data on the client side which we expect to fail.
 915      * This will ensure we have received the NewSessionTicket in TLSv1.3 where
 916      * appropriate. We do this twice because there are 2 NewSesionTickets.
 917      */
 918     for (i = 0; i < 2; i++) {
 919         if (SSL_read_ex(clientssl, &buf, sizeof(buf), &readbytes) > 0) {
 920             if (!TEST_ulong_eq(readbytes, 0))
 921                 return 0;
 922         } else if (!TEST_int_eq(SSL_get_error(clientssl, 0),
 923                                 SSL_ERROR_WANT_READ)) {
 924             return 0;
 925         }
 926     }
 927
 928     return 1;
 929 }
 930
 931 void shutdown_ssl_connection(SSL *serverssl, SSL *clientssl)
 932 {
 933     SSL_shutdown(clientssl);
 934     SSL_shutdown(serverssl);
 935     SSL_free(serverssl);
 936     SSL_free(clientssl);
 937 }