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      1 /*
      2  * Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
      3  * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
      4  * Copyright 2005 Nokia. All rights reserved.
      5  *
      6  * Licensed under the Apache License 2.0 (the "License").  You may not use
      7  * this file except in compliance with the License.  You can obtain a copy
      8  * in the file LICENSE in the source distribution or at
      9  * https://www.openssl.org/source/license.html
     10  */
     11 
     12 #include "e_os.h"
     13 
     14 /* Or gethostname won't be declared properly on Linux and GNU platforms. */
     15 #ifndef _BSD_SOURCE
     16 # define _BSD_SOURCE 1
     17 #endif
     18 #ifndef _DEFAULT_SOURCE
     19 # define _DEFAULT_SOURCE 1
     20 #endif
     21 
     22 #include <assert.h>
     23 #include <errno.h>
     24 #include <limits.h>
     25 #include <stdio.h>
     26 #include <stdlib.h>
     27 #include <string.h>
     28 #include <time.h>
     29 
     30 #include "internal/nelem.h"
     31 
     32 #ifdef OPENSSL_SYS_VMS
     33 /*
     34  * Or isascii won't be declared properly on VMS (at least with DECompHP C).
     35  */
     36 # define _XOPEN_SOURCE 500
     37 #endif
     38 
     39 #include <ctype.h>
     40 
     41 #include <openssl/bio.h>
     42 #include <openssl/crypto.h>
     43 #include <openssl/evp.h>
     44 #include <openssl/x509.h>
     45 #include <openssl/x509v3.h>
     46 #include <openssl/ssl.h>
     47 #include <openssl/err.h>
     48 #include <openssl/rand.h>
     49 #include <openssl/rsa.h>
     50 #ifndef OPENSSL_NO_DSA
     51 # include <openssl/dsa.h>
     52 #endif
     53 #include <openssl/bn.h>
     54 #ifndef OPENSSL_NO_CT
     55 # include <openssl/ct.h>
     56 #endif
     57 #include <openssl/provider.h>
     58 #include "testutil.h"
     59 
     60 /*
     61  * Or gethostname won't be declared properly
     62  * on Compaq platforms (at least with DEC C).
     63  * Do not try to put it earlier, or IPv6 includes
     64  * get screwed...
     65  */
     66 #define _XOPEN_SOURCE_EXTENDED  1
     67 
     68 #ifdef OPENSSL_SYS_WINDOWS
     69 # include <winsock.h>
     70 #else
     71 # include <unistd.h>
     72 #endif
     73 
     74 #include "helpers/predefined_dhparams.h"
     75 
     76 static SSL_CTX *s_ctx = NULL;
     77 static SSL_CTX *s_ctx2 = NULL;
     78 
     79 /*
     80  * There is really no standard for this, so let's assign something
     81  * only for this test
     82  */
     83 #define COMP_ZLIB       1
     84 
     85 static int verify_callback(int ok, X509_STORE_CTX *ctx);
     86 static int app_verify_callback(X509_STORE_CTX *ctx, void *arg);
     87 #define APP_CALLBACK_STRING "Test Callback Argument"
     88 struct app_verify_arg {
     89     char *string;
     90     int app_verify;
     91 };
     92 
     93 static char *psk_key = NULL;    /* by default PSK is not used */
     94 #ifndef OPENSSL_NO_PSK
     95 static unsigned int psk_client_callback(SSL *ssl, const char *hint,
     96                                         char *identity,
     97                                         unsigned int max_identity_len,
     98                                         unsigned char *psk,
     99                                         unsigned int max_psk_len);
    100 static unsigned int psk_server_callback(SSL *ssl, const char *identity,
    101                                         unsigned char *psk,
    102                                         unsigned int max_psk_len);
    103 #endif
    104 
    105 static BIO *bio_stdout = NULL;
    106 
    107 #ifndef OPENSSL_NO_NEXTPROTONEG
    108 /* Note that this code assumes that this is only a one element list: */
    109 static const char NEXT_PROTO_STRING[] = "\x09testproto";
    110 static int npn_client = 0;
    111 static int npn_server = 0;
    112 static int npn_server_reject = 0;
    113 
    114 static int cb_client_npn(SSL *s, unsigned char **out, unsigned char *outlen,
    115                          const unsigned char *in, unsigned int inlen,
    116                          void *arg)
    117 {
    118     /*
    119      * This callback only returns the protocol string, rather than a length
    120      * prefixed set. We assume that NEXT_PROTO_STRING is a one element list
    121      * and remove the first byte to chop off the length prefix.
    122      */
    123     *out = (unsigned char *)NEXT_PROTO_STRING + 1;
    124     *outlen = sizeof(NEXT_PROTO_STRING) - 2;
    125     return SSL_TLSEXT_ERR_OK;
    126 }
    127 
    128 static int cb_server_npn(SSL *s, const unsigned char **data,
    129                          unsigned int *len, void *arg)
    130 {
    131     *data = (const unsigned char *)NEXT_PROTO_STRING;
    132     *len = sizeof(NEXT_PROTO_STRING) - 1;
    133     return SSL_TLSEXT_ERR_OK;
    134 }
    135 
    136 static int cb_server_rejects_npn(SSL *s, const unsigned char **data,
    137                                  unsigned int *len, void *arg)
    138 {
    139     return SSL_TLSEXT_ERR_NOACK;
    140 }
    141 
    142 static int verify_npn(SSL *client, SSL *server)
    143 {
    144     const unsigned char *client_s;
    145     unsigned client_len;
    146     const unsigned char *server_s;
    147     unsigned server_len;
    148 
    149     SSL_get0_next_proto_negotiated(client, &client_s, &client_len);
    150     SSL_get0_next_proto_negotiated(server, &server_s, &server_len);
    151 
    152     if (client_len) {
    153         BIO_printf(bio_stdout, "Client NPN: ");
    154         BIO_write(bio_stdout, client_s, client_len);
    155         BIO_printf(bio_stdout, "\n");
    156     }
    157 
    158     if (server_len) {
    159         BIO_printf(bio_stdout, "Server NPN: ");
    160         BIO_write(bio_stdout, server_s, server_len);
    161         BIO_printf(bio_stdout, "\n");
    162     }
    163 
    164     /*
    165      * If an NPN string was returned, it must be the protocol that we
    166      * expected to negotiate.
    167      */
    168     if (client_len && (client_len != sizeof(NEXT_PROTO_STRING) - 2 ||
    169                        memcmp(client_s, NEXT_PROTO_STRING + 1, client_len)))
    170         return -1;
    171     if (server_len && (server_len != sizeof(NEXT_PROTO_STRING) - 2 ||
    172                        memcmp(server_s, NEXT_PROTO_STRING + 1, server_len)))
    173         return -1;
    174 
    175     if (!npn_client && client_len)
    176         return -1;
    177     if (!npn_server && server_len)
    178         return -1;
    179     if (npn_server_reject && server_len)
    180         return -1;
    181     if (npn_client && npn_server && (!client_len || !server_len))
    182         return -1;
    183 
    184     return 0;
    185 }
    186 #endif
    187 
    188 static const char *alpn_client;
    189 static char *alpn_server;
    190 static char *alpn_server2;
    191 static const char *alpn_expected;
    192 static unsigned char *alpn_selected;
    193 static const char *server_min_proto;
    194 static const char *server_max_proto;
    195 static const char *client_min_proto;
    196 static const char *client_max_proto;
    197 static const char *should_negotiate;
    198 static const char *sn_client;
    199 static const char *sn_server1;
    200 static const char *sn_server2;
    201 static int sn_expect = 0;
    202 static const char *server_sess_out;
    203 static const char *server_sess_in;
    204 static const char *client_sess_out;
    205 static const char *client_sess_in;
    206 static SSL_SESSION *server_sess;
    207 static SSL_SESSION *client_sess;
    208 
    209 static int servername_cb(SSL *s, int *ad, void *arg)
    210 {
    211     const char *servername = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
    212     if (sn_server2 == NULL) {
    213         BIO_printf(bio_stdout, "Servername 2 is NULL\n");
    214         return SSL_TLSEXT_ERR_NOACK;
    215     }
    216 
    217     if (servername) {
    218         if (s_ctx2 != NULL && sn_server2 != NULL &&
    219             !OPENSSL_strcasecmp(servername, sn_server2)) {
    220             BIO_printf(bio_stdout, "Switching server context.\n");
    221             SSL_set_SSL_CTX(s, s_ctx2);
    222         }
    223     }
    224     return SSL_TLSEXT_ERR_OK;
    225 }
    226 static int verify_servername(SSL *client, SSL *server)
    227 {
    228     /* just need to see if sn_context is what we expect */
    229     SSL_CTX* ctx = SSL_get_SSL_CTX(server);
    230     if (sn_expect == 0)
    231         return 0;
    232     if (sn_expect == 1 && ctx == s_ctx)
    233         return 0;
    234     if (sn_expect == 2 && ctx == s_ctx2)
    235         return 0;
    236     BIO_printf(bio_stdout, "Servername: expected context %d\n", sn_expect);
    237     if (ctx == s_ctx2)
    238         BIO_printf(bio_stdout, "Servername: context is 2\n");
    239     else if (ctx == s_ctx)
    240         BIO_printf(bio_stdout, "Servername: context is 1\n");
    241     else
    242         BIO_printf(bio_stdout, "Servername: context is unknown\n");
    243     return -1;
    244 }
    245 
    246 
    247 /*-
    248  * next_protos_parse parses a comma separated list of strings into a string
    249  * in a format suitable for passing to SSL_CTX_set_next_protos_advertised.
    250  *   outlen: (output) set to the length of the resulting buffer on success.
    251  *   in: a NUL terminated string like "abc,def,ghi"
    252  *
    253  *   returns: a malloced buffer or NULL on failure.
    254  */
    255 static unsigned char *next_protos_parse(size_t *outlen,
    256                                         const char *in)
    257 {
    258     size_t len;
    259     unsigned char *out;
    260     size_t i, start = 0;
    261 
    262     len = strlen(in);
    263     if (len >= 65535)
    264         return NULL;
    265 
    266     out = OPENSSL_malloc(strlen(in) + 1);
    267     if (!out)
    268         return NULL;
    269 
    270     for (i = 0; i <= len; ++i) {
    271         if (i == len || in[i] == ',') {
    272             if (i - start > 255) {
    273                 OPENSSL_free(out);
    274                 return NULL;
    275             }
    276             out[start] = (unsigned char)(i - start);
    277             start = i + 1;
    278         } else
    279             out[i + 1] = in[i];
    280     }
    281 
    282     *outlen = len + 1;
    283     return out;
    284 }
    285 
    286 static int cb_server_alpn(SSL *s, const unsigned char **out,
    287                           unsigned char *outlen, const unsigned char *in,
    288                           unsigned int inlen, void *arg)
    289 {
    290     unsigned char *protos;
    291     size_t protos_len;
    292     char* alpn_str = arg;
    293 
    294     protos = next_protos_parse(&protos_len, alpn_str);
    295     if (protos == NULL) {
    296         fprintf(stderr, "failed to parser ALPN server protocol string: %s\n",
    297                 alpn_str);
    298         abort();
    299     }
    300 
    301     if (SSL_select_next_proto
    302         ((unsigned char **)out, outlen, protos, protos_len, in,
    303          inlen) != OPENSSL_NPN_NEGOTIATED) {
    304         OPENSSL_free(protos);
    305         return SSL_TLSEXT_ERR_NOACK;
    306     }
    307 
    308     /*
    309      * Make a copy of the selected protocol which will be freed in
    310      * verify_alpn.
    311      */
    312     alpn_selected = OPENSSL_malloc(*outlen);
    313     if (alpn_selected == NULL) {
    314         fprintf(stderr, "failed to allocate memory\n");
    315         OPENSSL_free(protos);
    316         abort();
    317     }
    318     memcpy(alpn_selected, *out, *outlen);
    319     *out = alpn_selected;
    320 
    321     OPENSSL_free(protos);
    322     return SSL_TLSEXT_ERR_OK;
    323 }
    324 
    325 static int verify_alpn(SSL *client, SSL *server)
    326 {
    327     const unsigned char *client_proto, *server_proto;
    328     unsigned int client_proto_len = 0, server_proto_len = 0;
    329     SSL_get0_alpn_selected(client, &client_proto, &client_proto_len);
    330     SSL_get0_alpn_selected(server, &server_proto, &server_proto_len);
    331 
    332     OPENSSL_free(alpn_selected);
    333     alpn_selected = NULL;
    334 
    335     if (client_proto_len != server_proto_len) {
    336         BIO_printf(bio_stdout, "ALPN selected protocols differ!\n");
    337         goto err;
    338     }
    339 
    340     if (client_proto != NULL &&
    341         memcmp(client_proto, server_proto, client_proto_len) != 0) {
    342         BIO_printf(bio_stdout, "ALPN selected protocols differ!\n");
    343         goto err;
    344     }
    345 
    346     if (client_proto_len > 0 && alpn_expected == NULL) {
    347         BIO_printf(bio_stdout, "ALPN unexpectedly negotiated\n");
    348         goto err;
    349     }
    350 
    351     if (alpn_expected != NULL &&
    352         (client_proto_len != strlen(alpn_expected) ||
    353          memcmp(client_proto, alpn_expected, client_proto_len) != 0)) {
    354         BIO_printf(bio_stdout,
    355                    "ALPN selected protocols not equal to expected protocol: %s\n",
    356                    alpn_expected);
    357         goto err;
    358     }
    359 
    360     return 0;
    361 
    362  err:
    363     BIO_printf(bio_stdout, "ALPN results: client: '");
    364     BIO_write(bio_stdout, client_proto, client_proto_len);
    365     BIO_printf(bio_stdout, "', server: '");
    366     BIO_write(bio_stdout, server_proto, server_proto_len);
    367     BIO_printf(bio_stdout, "'\n");
    368     BIO_printf(bio_stdout, "ALPN configured: client: '%s', server: '",
    369                    alpn_client);
    370     if (SSL_get_SSL_CTX(server) == s_ctx2) {
    371         BIO_printf(bio_stdout, "%s'\n",
    372                    alpn_server2);
    373     } else {
    374         BIO_printf(bio_stdout, "%s'\n",
    375                    alpn_server);
    376     }
    377     return -1;
    378 }
    379 
    380 /*
    381  * WARNING : below extension types are *NOT* IETF assigned, and could
    382  * conflict if these types are reassigned and handled specially by OpenSSL
    383  * in the future
    384  */
    385 #define TACK_EXT_TYPE 62208
    386 #define CUSTOM_EXT_TYPE_0 1000
    387 #define CUSTOM_EXT_TYPE_1 1001
    388 #define CUSTOM_EXT_TYPE_2 1002
    389 #define CUSTOM_EXT_TYPE_3 1003
    390 
    391 static const char custom_ext_cli_string[] = "abc";
    392 static const char custom_ext_srv_string[] = "defg";
    393 
    394 /* These set from cmdline */
    395 static char *serverinfo_file = NULL;
    396 static int serverinfo_sct = 0;
    397 static int serverinfo_tack = 0;
    398 
    399 /* These set based on extension callbacks */
    400 static int serverinfo_sct_seen = 0;
    401 static int serverinfo_tack_seen = 0;
    402 static int serverinfo_other_seen = 0;
    403 
    404 /* This set from cmdline */
    405 static int custom_ext = 0;
    406 
    407 /* This set based on extension callbacks */
    408 static int custom_ext_error = 0;
    409 
    410 static int serverinfo_cli_parse_cb(SSL *s, unsigned int ext_type,
    411                                    const unsigned char *in, size_t inlen,
    412                                    int *al, void *arg)
    413 {
    414     if (ext_type == TLSEXT_TYPE_signed_certificate_timestamp)
    415         serverinfo_sct_seen++;
    416     else if (ext_type == TACK_EXT_TYPE)
    417         serverinfo_tack_seen++;
    418     else
    419         serverinfo_other_seen++;
    420     return 1;
    421 }
    422 
    423 static int verify_serverinfo(void)
    424 {
    425     if (serverinfo_sct != serverinfo_sct_seen)
    426         return -1;
    427     if (serverinfo_tack != serverinfo_tack_seen)
    428         return -1;
    429     if (serverinfo_other_seen)
    430         return -1;
    431     return 0;
    432 }
    433 
    434 /*-
    435  * Four test cases for custom extensions:
    436  * 0 - no ClientHello extension or ServerHello response
    437  * 1 - ClientHello with "abc", no response
    438  * 2 - ClientHello with "abc", empty response
    439  * 3 - ClientHello with "abc", "defg" response
    440  */
    441 
    442 static int custom_ext_0_cli_add_cb(SSL *s, unsigned int ext_type,
    443                                    const unsigned char **out,
    444                                    size_t *outlen, int *al, void *arg)
    445 {
    446     if (ext_type != CUSTOM_EXT_TYPE_0)
    447         custom_ext_error = 1;
    448     return 0;                   /* Don't send an extension */
    449 }
    450 
    451 static int custom_ext_0_cli_parse_cb(SSL *s, unsigned int ext_type,
    452                                      const unsigned char *in,
    453                                      size_t inlen, int *al, void *arg)
    454 {
    455     return 1;
    456 }
    457 
    458 static int custom_ext_1_cli_add_cb(SSL *s, unsigned int ext_type,
    459                                    const unsigned char **out,
    460                                    size_t *outlen, int *al, void *arg)
    461 {
    462     if (ext_type != CUSTOM_EXT_TYPE_1)
    463         custom_ext_error = 1;
    464     *out = (const unsigned char *)custom_ext_cli_string;
    465     *outlen = strlen(custom_ext_cli_string);
    466     return 1;                   /* Send "abc" */
    467 }
    468 
    469 static int custom_ext_1_cli_parse_cb(SSL *s, unsigned int ext_type,
    470                                      const unsigned char *in,
    471                                      size_t inlen, int *al, void *arg)
    472 {
    473     return 1;
    474 }
    475 
    476 static int custom_ext_2_cli_add_cb(SSL *s, unsigned int ext_type,
    477                                    const unsigned char **out,
    478                                    size_t *outlen, int *al, void *arg)
    479 {
    480     if (ext_type != CUSTOM_EXT_TYPE_2)
    481         custom_ext_error = 1;
    482     *out = (const unsigned char *)custom_ext_cli_string;
    483     *outlen = strlen(custom_ext_cli_string);
    484     return 1;                   /* Send "abc" */
    485 }
    486 
    487 static int custom_ext_2_cli_parse_cb(SSL *s, unsigned int ext_type,
    488                                      const unsigned char *in,
    489                                      size_t inlen, int *al, void *arg)
    490 {
    491     if (ext_type != CUSTOM_EXT_TYPE_2)
    492         custom_ext_error = 1;
    493     if (inlen != 0)
    494         custom_ext_error = 1;   /* Should be empty response */
    495     return 1;
    496 }
    497 
    498 static int custom_ext_3_cli_add_cb(SSL *s, unsigned int ext_type,
    499                                    const unsigned char **out,
    500                                    size_t *outlen, int *al, void *arg)
    501 {
    502     if (ext_type != CUSTOM_EXT_TYPE_3)
    503         custom_ext_error = 1;
    504     *out = (const unsigned char *)custom_ext_cli_string;
    505     *outlen = strlen(custom_ext_cli_string);
    506     return 1;                   /* Send "abc" */
    507 }
    508 
    509 static int custom_ext_3_cli_parse_cb(SSL *s, unsigned int ext_type,
    510                                      const unsigned char *in,
    511                                      size_t inlen, int *al, void *arg)
    512 {
    513     if (ext_type != CUSTOM_EXT_TYPE_3)
    514         custom_ext_error = 1;
    515     if (inlen != strlen(custom_ext_srv_string))
    516         custom_ext_error = 1;
    517     if (memcmp(custom_ext_srv_string, in, inlen) != 0)
    518         custom_ext_error = 1;   /* Check for "defg" */
    519     return 1;
    520 }
    521 
    522 /*
    523  * custom_ext_0_cli_add_cb returns 0 - the server won't receive a callback
    524  * for this extension
    525  */
    526 static int custom_ext_0_srv_parse_cb(SSL *s, unsigned int ext_type,
    527                                      const unsigned char *in,
    528                                      size_t inlen, int *al, void *arg)
    529 {
    530     custom_ext_error = 1;
    531     return 1;
    532 }
    533 
    534 /* 'add' callbacks are only called if the 'parse' callback is called */
    535 static int custom_ext_0_srv_add_cb(SSL *s, unsigned int ext_type,
    536                                    const unsigned char **out,
    537                                    size_t *outlen, int *al, void *arg)
    538 {
    539     /* Error: should not have been called */
    540     custom_ext_error = 1;
    541     return 0;                   /* Don't send an extension */
    542 }
    543 
    544 static int custom_ext_1_srv_parse_cb(SSL *s, unsigned int ext_type,
    545                                      const unsigned char *in,
    546                                      size_t inlen, int *al, void *arg)
    547 {
    548     if (ext_type != CUSTOM_EXT_TYPE_1)
    549         custom_ext_error = 1;
    550     /* Check for "abc" */
    551     if (inlen != strlen(custom_ext_cli_string))
    552         custom_ext_error = 1;
    553     if (memcmp(in, custom_ext_cli_string, inlen) != 0)
    554         custom_ext_error = 1;
    555     return 1;
    556 }
    557 
    558 static int custom_ext_1_srv_add_cb(SSL *s, unsigned int ext_type,
    559                                    const unsigned char **out,
    560                                    size_t *outlen, int *al, void *arg)
    561 {
    562     return 0;                   /* Don't send an extension */
    563 }
    564 
    565 static int custom_ext_2_srv_parse_cb(SSL *s, unsigned int ext_type,
    566                                      const unsigned char *in,
    567                                      size_t inlen, int *al, void *arg)
    568 {
    569     if (ext_type != CUSTOM_EXT_TYPE_2)
    570         custom_ext_error = 1;
    571     /* Check for "abc" */
    572     if (inlen != strlen(custom_ext_cli_string))
    573         custom_ext_error = 1;
    574     if (memcmp(in, custom_ext_cli_string, inlen) != 0)
    575         custom_ext_error = 1;
    576     return 1;
    577 }
    578 
    579 static int custom_ext_2_srv_add_cb(SSL *s, unsigned int ext_type,
    580                                    const unsigned char **out,
    581                                    size_t *outlen, int *al, void *arg)
    582 {
    583     *out = NULL;
    584     *outlen = 0;
    585     return 1;                   /* Send empty extension */
    586 }
    587 
    588 static int custom_ext_3_srv_parse_cb(SSL *s, unsigned int ext_type,
    589                                      const unsigned char *in,
    590                                      size_t inlen, int *al, void *arg)
    591 {
    592     if (ext_type != CUSTOM_EXT_TYPE_3)
    593         custom_ext_error = 1;
    594     /* Check for "abc" */
    595     if (inlen != strlen(custom_ext_cli_string))
    596         custom_ext_error = 1;
    597     if (memcmp(in, custom_ext_cli_string, inlen) != 0)
    598         custom_ext_error = 1;
    599     return 1;
    600 }
    601 
    602 static int custom_ext_3_srv_add_cb(SSL *s, unsigned int ext_type,
    603                                    const unsigned char **out,
    604                                    size_t *outlen, int *al, void *arg)
    605 {
    606     *out = (const unsigned char *)custom_ext_srv_string;
    607     *outlen = strlen(custom_ext_srv_string);
    608     return 1;                   /* Send "defg" */
    609 }
    610 
    611 static char *cipher = NULL;
    612 static char *ciphersuites = NULL;
    613 static int verbose = 0;
    614 static int debug = 0;
    615 
    616 int doit_localhost(SSL *s_ssl, SSL *c_ssl, int family,
    617                    long bytes, clock_t *s_time, clock_t *c_time);
    618 int doit_biopair(SSL *s_ssl, SSL *c_ssl, long bytes, clock_t *s_time,
    619                  clock_t *c_time);
    620 int doit(SSL *s_ssl, SSL *c_ssl, long bytes);
    621 
    622 static void sv_usage(void)
    623 {
    624     fprintf(stderr, "usage: ssltest [args ...]\n");
    625     fprintf(stderr, "\n");
    626     fprintf(stderr, " -server_auth  - check server certificate\n");
    627     fprintf(stderr, " -client_auth  - do client authentication\n");
    628     fprintf(stderr, " -v            - more output\n");
    629     fprintf(stderr, " -d            - debug output\n");
    630     fprintf(stderr, " -reuse        - use session-id reuse\n");
    631     fprintf(stderr, " -num <val>    - number of connections to perform\n");
    632     fprintf(stderr,
    633             " -bytes <val>  - number of bytes to swap between client/server\n");
    634 #ifndef OPENSSL_NO_DH
    635     fprintf(stderr,
    636             " -dhe512       - use 512 bit key for DHE (to test failure)\n");
    637     fprintf(stderr,
    638             " -dhe1024dsa   - use 1024 bit key (with 160-bit subprime) for DHE\n");
    639     fprintf(stderr,
    640             " -dhe2048      - use 2048 bit key (safe prime) for DHE (default, no-op)\n");
    641     fprintf(stderr,
    642             " -dhe4096      - use 4096 bit key (safe prime) for DHE\n");
    643 #endif
    644     fprintf(stderr, " -no_dhe       - disable DHE\n");
    645 #ifndef OPENSSL_NO_EC
    646     fprintf(stderr, " -no_ecdhe     - disable ECDHE\n");
    647 #endif
    648 #ifndef OPENSSL_NO_PSK
    649     fprintf(stderr, " -psk arg      - PSK in hex (without 0x)\n");
    650 #endif
    651 #ifndef OPENSSL_NO_SSL3
    652     fprintf(stderr, " -ssl3         - use SSLv3\n");
    653 #endif
    654 #ifndef OPENSSL_NO_TLS1
    655     fprintf(stderr, " -tls1         - use TLSv1\n");
    656 #endif
    657 #ifndef OPENSSL_NO_TLS1_1
    658     fprintf(stderr, " -tls1_1       - use TLSv1.1\n");
    659 #endif
    660 #ifndef OPENSSL_NO_TLS1_2
    661     fprintf(stderr, " -tls1_2       - use TLSv1.2\n");
    662 #endif
    663 #ifndef OPENSSL_NO_DTLS
    664     fprintf(stderr, " -dtls         - use DTLS\n");
    665 #ifndef OPENSSL_NO_DTLS1
    666     fprintf(stderr, " -dtls1        - use DTLSv1\n");
    667 #endif
    668 #ifndef OPENSSL_NO_DTLS1_2
    669     fprintf(stderr, " -dtls12       - use DTLSv1.2\n");
    670 #endif
    671 #endif
    672     fprintf(stderr, " -CApath arg   - PEM format directory of CA's\n");
    673     fprintf(stderr, " -CAfile arg   - PEM format file of CA's\n");
    674     fprintf(stderr, " -s_cert arg   - Server certificate file\n");
    675     fprintf(stderr,
    676             " -s_key arg    - Server key file (default: same as -cert)\n");
    677     fprintf(stderr, " -c_cert arg   - Client certificate file\n");
    678     fprintf(stderr,
    679             " -c_key arg    - Client key file (default: same as -c_cert)\n");
    680     fprintf(stderr, " -cipher arg   - The TLSv1.2 and below cipher list\n");
    681     fprintf(stderr, " -ciphersuites arg   - The TLSv1.3 ciphersuites\n");
    682     fprintf(stderr, " -bio_pair     - Use BIO pairs\n");
    683     fprintf(stderr, " -ipv4         - Use IPv4 connection on localhost\n");
    684     fprintf(stderr, " -ipv6         - Use IPv6 connection on localhost\n");
    685     fprintf(stderr, " -f            - Test even cases that can't work\n");
    686     fprintf(stderr,
    687             " -time         - measure processor time used by client and server\n");
    688     fprintf(stderr, " -zlib         - use zlib compression\n");
    689 #ifndef OPENSSL_NO_NEXTPROTONEG
    690     fprintf(stderr, " -npn_client - have client side offer NPN\n");
    691     fprintf(stderr, " -npn_server - have server side offer NPN\n");
    692     fprintf(stderr, " -npn_server_reject - have server reject NPN\n");
    693 #endif
    694     fprintf(stderr, " -serverinfo_file file - have server use this file\n");
    695     fprintf(stderr, " -serverinfo_sct  - have client offer and expect SCT\n");
    696     fprintf(stderr,
    697             " -serverinfo_tack - have client offer and expect TACK\n");
    698     fprintf(stderr,
    699             " -custom_ext - try various custom extension callbacks\n");
    700     fprintf(stderr, " -alpn_client <string> - have client side offer ALPN\n");
    701     fprintf(stderr, " -alpn_server <string> - have server side offer ALPN\n");
    702     fprintf(stderr, " -alpn_server1 <string> - alias for -alpn_server\n");
    703     fprintf(stderr, " -alpn_server2 <string> - have server side context 2 offer ALPN\n");
    704     fprintf(stderr,
    705             " -alpn_expected <string> - the ALPN protocol that should be negotiated\n");
    706     fprintf(stderr, " -server_min_proto <string> - Minimum version the server should support\n");
    707     fprintf(stderr, " -server_max_proto <string> - Maximum version the server should support\n");
    708     fprintf(stderr, " -client_min_proto <string> - Minimum version the client should support\n");
    709     fprintf(stderr, " -client_max_proto <string> - Maximum version the client should support\n");
    710     fprintf(stderr, " -should_negotiate <string> - The version that should be negotiated, fail-client or fail-server\n");
    711 #ifndef OPENSSL_NO_CT
    712     fprintf(stderr, " -noct         - no certificate transparency\n");
    713     fprintf(stderr, " -requestct    - request certificate transparency\n");
    714     fprintf(stderr, " -requirect    - require certificate transparency\n");
    715 #endif
    716     fprintf(stderr, " -sn_client <string>  - have client request this servername\n");
    717     fprintf(stderr, " -sn_server1 <string> - have server context 1 respond to this servername\n");
    718     fprintf(stderr, " -sn_server2 <string> - have server context 2 respond to this servername\n");
    719     fprintf(stderr, " -sn_expect1          - expected server 1\n");
    720     fprintf(stderr, " -sn_expect2          - expected server 2\n");
    721     fprintf(stderr, " -server_sess_out <file>    - Save the server session to a file\n");
    722     fprintf(stderr, " -server_sess_in <file>     - Read the server session from a file\n");
    723     fprintf(stderr, " -client_sess_out <file>    - Save the client session to a file\n");
    724     fprintf(stderr, " -client_sess_in <file>     - Read the client session from a file\n");
    725     fprintf(stderr, " -should_reuse <number>     - The expected state of reusing the session\n");
    726     fprintf(stderr, " -no_ticket    - do not issue TLS session ticket\n");
    727     fprintf(stderr, " -client_ktls  - try to enable client KTLS\n");
    728     fprintf(stderr, " -server_ktls  - try to enable server KTLS\n");
    729     fprintf(stderr, " -provider <name>    - Load the given provider into the library context\n");
    730     fprintf(stderr, " -config <cnf>    - Load the given config file into the library context\n");
    731 }
    732 
    733 static void print_key_details(BIO *out, EVP_PKEY *key)
    734 {
    735     int keyid = EVP_PKEY_get_id(key);
    736 
    737 #ifndef OPENSSL_NO_EC
    738     if (keyid == EVP_PKEY_EC) {
    739         char group[80];
    740         size_t size;
    741 
    742         if (!EVP_PKEY_get_group_name(key, group, sizeof(group), &size))
    743             strcpy(group, "unknown group");
    744         BIO_printf(out, "%d bits EC (%s)", EVP_PKEY_get_bits(key), group);
    745     } else
    746 #endif
    747     {
    748         const char *algname;
    749         switch (keyid) {
    750         case EVP_PKEY_RSA:
    751             algname = "RSA";
    752             break;
    753         case EVP_PKEY_DSA:
    754             algname = "DSA";
    755             break;
    756         case EVP_PKEY_DH:
    757             algname = "DH";
    758             break;
    759         default:
    760             algname = OBJ_nid2sn(keyid);
    761             break;
    762         }
    763         BIO_printf(out, "%d bits %s", EVP_PKEY_get_bits(key), algname);
    764     }
    765 }
    766 
    767 static void print_details(SSL *c_ssl, const char *prefix)
    768 {
    769     const SSL_CIPHER *ciph;
    770     int mdnid;
    771     X509 *cert;
    772     EVP_PKEY *pkey;
    773 
    774     ciph = SSL_get_current_cipher(c_ssl);
    775     BIO_printf(bio_stdout, "%s%s, cipher %s %s",
    776                prefix,
    777                SSL_get_version(c_ssl),
    778                SSL_CIPHER_get_version(ciph), SSL_CIPHER_get_name(ciph));
    779     cert = SSL_get0_peer_certificate(c_ssl);
    780     if (cert != NULL) {
    781         EVP_PKEY* pubkey = X509_get0_pubkey(cert);
    782 
    783         if (pubkey != NULL) {
    784             BIO_puts(bio_stdout, ", ");
    785             print_key_details(bio_stdout, pubkey);
    786         }
    787     }
    788     if (SSL_get_peer_tmp_key(c_ssl, &pkey)) {
    789         BIO_puts(bio_stdout, ", temp key: ");
    790         print_key_details(bio_stdout, pkey);
    791         EVP_PKEY_free(pkey);
    792     }
    793     if (SSL_get_peer_signature_nid(c_ssl, &mdnid))
    794         BIO_printf(bio_stdout, ", digest=%s", OBJ_nid2sn(mdnid));
    795     BIO_printf(bio_stdout, "\n");
    796 }
    797 
    798 /*
    799  * protocol_from_string - converts a protocol version string to a number
    800  *
    801  * Returns -1 on failure or the version on success
    802  */
    803 static int protocol_from_string(const char *value)
    804 {
    805     struct protocol_versions {
    806         const char *name;
    807         int version;
    808     };
    809     static const struct protocol_versions versions[] = {
    810         {"ssl3", SSL3_VERSION},
    811         {"tls1", TLS1_VERSION},
    812         {"tls1.1", TLS1_1_VERSION},
    813         {"tls1.2", TLS1_2_VERSION},
    814         {"tls1.3", TLS1_3_VERSION},
    815         {"dtls1", DTLS1_VERSION},
    816         {"dtls1.2", DTLS1_2_VERSION}};
    817     size_t i;
    818     size_t n = OSSL_NELEM(versions);
    819 
    820     for (i = 0; i < n; i++)
    821         if (strcmp(versions[i].name, value) == 0)
    822             return versions[i].version;
    823     return -1;
    824 }
    825 
    826 static SSL_SESSION *read_session(const char *filename)
    827 {
    828     SSL_SESSION *sess;
    829     BIO *f = BIO_new_file(filename, "r");
    830 
    831     if (f == NULL) {
    832         BIO_printf(bio_err, "Can't open session file %s\n", filename);
    833         ERR_print_errors(bio_err);
    834         return NULL;
    835     }
    836     sess = PEM_read_bio_SSL_SESSION(f, NULL, 0, NULL);
    837     if (sess == NULL) {
    838         BIO_printf(bio_err, "Can't parse session file %s\n", filename);
    839         ERR_print_errors(bio_err);
    840     }
    841     BIO_free(f);
    842     return sess;
    843 }
    844 
    845 static int write_session(const char *filename, SSL_SESSION *sess)
    846 {
    847     BIO *f;
    848 
    849     if (sess == NULL) {
    850         BIO_printf(bio_err, "No session information\n");
    851         return 0;
    852     }
    853 
    854     f = BIO_new_file(filename, "w");
    855     if (f == NULL) {
    856         BIO_printf(bio_err, "Can't open session file %s\n", filename);
    857         ERR_print_errors(bio_err);
    858         return 0;
    859     }
    860     PEM_write_bio_SSL_SESSION(f, sess);
    861     BIO_free(f);
    862     return 1;
    863 }
    864 
    865 /*
    866  * set_protocol_version - Sets protocol version minimum or maximum
    867  *
    868  * Returns 0 on failure and 1 on success
    869  */
    870 static int set_protocol_version(const char *version, SSL *ssl, int setting)
    871 {
    872     if (version != NULL) {
    873         int ver = protocol_from_string(version);
    874         if (ver < 0) {
    875             BIO_printf(bio_err, "Error parsing: %s\n", version);
    876             return 0;
    877         }
    878         return SSL_ctrl(ssl, setting, ver, NULL);
    879     }
    880     return 1;
    881 }
    882 
    883 int main(int argc, char *argv[])
    884 {
    885     const char *CApath = NULL, *CAfile = NULL;
    886     int badop = 0;
    887     enum { BIO_MEM, BIO_PAIR, BIO_IPV4, BIO_IPV6 } bio_type = BIO_MEM;
    888     int force = 0;
    889     int dtls1 = 0, dtls12 = 0, dtls = 0, tls1 = 0, tls1_1 = 0, tls1_2 = 0, ssl3 = 0;
    890     int ret = EXIT_FAILURE;
    891     int client_auth = 0;
    892     int server_auth = 0, i;
    893     struct app_verify_arg app_verify_arg =
    894         { APP_CALLBACK_STRING, 0 };
    895     SSL_CTX *c_ctx = NULL;
    896     const SSL_METHOD *meth = NULL;
    897     SSL *c_ssl = NULL;
    898     SSL *s_ssl = NULL;
    899     int number = 1, reuse = 0;
    900     int should_reuse = -1;
    901     int no_ticket = 0;
    902     int client_ktls = 0, server_ktls = 0;
    903     long bytes = 256L;
    904 #ifndef OPENSSL_NO_DH
    905     EVP_PKEY *dhpkey;
    906     int dhe512 = 0, dhe1024dsa = 0, dhe4096 = 0;
    907     int no_dhe = 0;
    908 #endif
    909     int no_psk = 0;
    910     int print_time = 0;
    911     clock_t s_time = 0, c_time = 0;
    912 #ifndef OPENSSL_NO_COMP
    913     int n, comp = 0;
    914     COMP_METHOD *cm = NULL;
    915     STACK_OF(SSL_COMP) *ssl_comp_methods = NULL;
    916 #endif
    917     int no_protocol;
    918     int min_version = 0, max_version = 0;
    919 #ifndef OPENSSL_NO_CT
    920     /*
    921      * Disable CT validation by default, because it will interfere with
    922      * anything using custom extension handlers to deal with SCT extensions.
    923      */
    924     int ct_validation = 0;
    925 #endif
    926     SSL_CONF_CTX *s_cctx = NULL, *c_cctx = NULL, *s_cctx2 = NULL;
    927     STACK_OF(OPENSSL_STRING) *conf_args = NULL;
    928     char *arg = NULL, *argn = NULL;
    929     const char *provider = NULL, *config = NULL;
    930     OSSL_PROVIDER *thisprov = NULL, *defctxnull = NULL;
    931     OSSL_LIB_CTX *libctx = NULL;
    932 
    933     verbose = 0;
    934     debug = 0;
    935 
    936     bio_err = BIO_new_fp(stderr, BIO_NOCLOSE | BIO_FP_TEXT);
    937     bio_stdout = BIO_new_fp(stdout, BIO_NOCLOSE | BIO_FP_TEXT);
    938 
    939     s_cctx = SSL_CONF_CTX_new();
    940     s_cctx2 = SSL_CONF_CTX_new();
    941     c_cctx = SSL_CONF_CTX_new();
    942 
    943     if (!s_cctx || !c_cctx || !s_cctx2) {
    944         ERR_print_errors(bio_err);
    945         goto end;
    946     }
    947 
    948     SSL_CONF_CTX_set_flags(s_cctx,
    949                            SSL_CONF_FLAG_CMDLINE | SSL_CONF_FLAG_SERVER |
    950                            SSL_CONF_FLAG_CERTIFICATE |
    951                            SSL_CONF_FLAG_REQUIRE_PRIVATE);
    952     SSL_CONF_CTX_set_flags(s_cctx2,
    953                            SSL_CONF_FLAG_CMDLINE | SSL_CONF_FLAG_SERVER |
    954                            SSL_CONF_FLAG_CERTIFICATE |
    955                            SSL_CONF_FLAG_REQUIRE_PRIVATE);
    956     if (!SSL_CONF_CTX_set1_prefix(s_cctx, "-s_")) {
    957         ERR_print_errors(bio_err);
    958         goto end;
    959     }
    960     if (!SSL_CONF_CTX_set1_prefix(s_cctx2, "-s_")) {
    961         ERR_print_errors(bio_err);
    962         goto end;
    963     }
    964 
    965     SSL_CONF_CTX_set_flags(c_cctx,
    966                            SSL_CONF_FLAG_CMDLINE | SSL_CONF_FLAG_CLIENT |
    967                            SSL_CONF_FLAG_CERTIFICATE |
    968                            SSL_CONF_FLAG_REQUIRE_PRIVATE);
    969     if (!SSL_CONF_CTX_set1_prefix(c_cctx, "-c_")) {
    970         ERR_print_errors(bio_err);
    971         goto end;
    972     }
    973 
    974     argc--;
    975     argv++;
    976 
    977     while (argc >= 1) {
    978         if (strcmp(*argv, "-F") == 0) {
    979             fprintf(stderr,
    980                     "not compiled with FIPS support, so exiting without running.\n");
    981             EXIT(0);
    982         } else if (strcmp(*argv, "-server_auth") == 0)
    983             server_auth = 1;
    984         else if (strcmp(*argv, "-client_auth") == 0)
    985             client_auth = 1;
    986         else if (strcmp(*argv, "-v") == 0)
    987             verbose = 1;
    988         else if (strcmp(*argv, "-d") == 0)
    989             debug = 1;
    990         else if (strcmp(*argv, "-reuse") == 0)
    991             reuse = 1;
    992         else if (strcmp(*argv, "-no_dhe") == 0)
    993 #ifdef OPENSSL_NO_DH
    994             /* unused in this case */;
    995 #else
    996             no_dhe = 1;
    997         else if (strcmp(*argv, "-dhe512") == 0)
    998             dhe512 = 1;
    999         else if (strcmp(*argv, "-dhe1024dsa") == 0)
   1000             dhe1024dsa = 1;
   1001         else if (strcmp(*argv, "-dhe4096") == 0)
   1002             dhe4096 = 1;
   1003 #endif
   1004         else if (strcmp(*argv, "-no_ecdhe") == 0)
   1005             /* obsolete */;
   1006         else if (strcmp(*argv, "-psk") == 0) {
   1007             if (--argc < 1)
   1008                 goto bad;
   1009             psk_key = *(++argv);
   1010 #ifndef OPENSSL_NO_PSK
   1011             if (strspn(psk_key, "abcdefABCDEF1234567890") != strlen(psk_key)) {
   1012                 BIO_printf(bio_err, "Not a hex number '%s'\n", *argv);
   1013                 goto bad;
   1014             }
   1015 #else
   1016             no_psk = 1;
   1017 #endif
   1018         }
   1019         else if (strcmp(*argv, "-tls1_2") == 0) {
   1020             tls1_2 = 1;
   1021         } else if (strcmp(*argv, "-tls1_1") == 0) {
   1022             tls1_1 = 1;
   1023         } else if (strcmp(*argv, "-tls1") == 0) {
   1024             tls1 = 1;
   1025         } else if (strcmp(*argv, "-ssl3") == 0) {
   1026             ssl3 = 1;
   1027         } else if (strcmp(*argv, "-dtls1") == 0) {
   1028             dtls1 = 1;
   1029         } else if (strcmp(*argv, "-dtls12") == 0) {
   1030             dtls12 = 1;
   1031         } else if (strcmp(*argv, "-dtls") == 0) {
   1032             dtls = 1;
   1033         } else if (strncmp(*argv, "-num", 4) == 0) {
   1034             if (--argc < 1)
   1035                 goto bad;
   1036             number = atoi(*(++argv));
   1037             if (number == 0)
   1038                 number = 1;
   1039         } else if (strcmp(*argv, "-bytes") == 0) {
   1040             if (--argc < 1)
   1041                 goto bad;
   1042             bytes = atol(*(++argv));
   1043             if (bytes == 0L)
   1044                 bytes = 1L;
   1045             i = strlen(argv[0]);
   1046             if (argv[0][i - 1] == 'k')
   1047                 bytes *= 1024L;
   1048             if (argv[0][i - 1] == 'm')
   1049                 bytes *= 1024L * 1024L;
   1050         } else if (strcmp(*argv, "-cipher") == 0) {
   1051             if (--argc < 1)
   1052                 goto bad;
   1053             cipher = *(++argv);
   1054         } else if (strcmp(*argv, "-ciphersuites") == 0) {
   1055             if (--argc < 1)
   1056                 goto bad;
   1057             ciphersuites = *(++argv);
   1058         } else if (strcmp(*argv, "-CApath") == 0) {
   1059             if (--argc < 1)
   1060                 goto bad;
   1061             CApath = *(++argv);
   1062         } else if (strcmp(*argv, "-CAfile") == 0) {
   1063             if (--argc < 1)
   1064                 goto bad;
   1065             CAfile = *(++argv);
   1066         } else if (strcmp(*argv, "-bio_pair") == 0) {
   1067             bio_type = BIO_PAIR;
   1068         }
   1069 #ifndef OPENSSL_NO_SOCK
   1070         else if (strcmp(*argv, "-ipv4") == 0) {
   1071             bio_type = BIO_IPV4;
   1072         } else if (strcmp(*argv, "-ipv6") == 0) {
   1073             bio_type = BIO_IPV6;
   1074         }
   1075 #endif
   1076         else if (strcmp(*argv, "-f") == 0) {
   1077             force = 1;
   1078         } else if (strcmp(*argv, "-time") == 0) {
   1079             print_time = 1;
   1080         }
   1081 #ifndef OPENSSL_NO_CT
   1082         else if (strcmp(*argv, "-noct") == 0) {
   1083             ct_validation = 0;
   1084         }
   1085         else if (strcmp(*argv, "-ct") == 0) {
   1086             ct_validation = 1;
   1087         }
   1088 #endif
   1089 #ifndef OPENSSL_NO_COMP
   1090         else if (strcmp(*argv, "-zlib") == 0) {
   1091             comp = COMP_ZLIB;
   1092         }
   1093 #endif
   1094         else if (strcmp(*argv, "-app_verify") == 0) {
   1095             app_verify_arg.app_verify = 1;
   1096         }
   1097 #ifndef OPENSSL_NO_NEXTPROTONEG
   1098           else if (strcmp(*argv, "-npn_client") == 0) {
   1099             npn_client = 1;
   1100         } else if (strcmp(*argv, "-npn_server") == 0) {
   1101             npn_server = 1;
   1102         } else if (strcmp(*argv, "-npn_server_reject") == 0) {
   1103             npn_server_reject = 1;
   1104         }
   1105 #endif
   1106         else if (strcmp(*argv, "-serverinfo_sct") == 0) {
   1107             serverinfo_sct = 1;
   1108         } else if (strcmp(*argv, "-serverinfo_tack") == 0) {
   1109             serverinfo_tack = 1;
   1110         } else if (strcmp(*argv, "-serverinfo_file") == 0) {
   1111             if (--argc < 1)
   1112                 goto bad;
   1113             serverinfo_file = *(++argv);
   1114         } else if (strcmp(*argv, "-custom_ext") == 0) {
   1115             custom_ext = 1;
   1116         } else if (strcmp(*argv, "-alpn_client") == 0) {
   1117             if (--argc < 1)
   1118                 goto bad;
   1119             alpn_client = *(++argv);
   1120         } else if (strcmp(*argv, "-alpn_server") == 0 ||
   1121                    strcmp(*argv, "-alpn_server1") == 0) {
   1122             if (--argc < 1)
   1123                 goto bad;
   1124             alpn_server = *(++argv);
   1125         } else if (strcmp(*argv, "-alpn_server2") == 0) {
   1126             if (--argc < 1)
   1127                 goto bad;
   1128             alpn_server2 = *(++argv);
   1129         } else if (strcmp(*argv, "-alpn_expected") == 0) {
   1130             if (--argc < 1)
   1131                 goto bad;
   1132             alpn_expected = *(++argv);
   1133         } else if (strcmp(*argv, "-server_min_proto") == 0) {
   1134             if (--argc < 1)
   1135                 goto bad;
   1136             server_min_proto = *(++argv);
   1137         } else if (strcmp(*argv, "-server_max_proto") == 0) {
   1138             if (--argc < 1)
   1139                 goto bad;
   1140             server_max_proto = *(++argv);
   1141         } else if (strcmp(*argv, "-client_min_proto") == 0) {
   1142             if (--argc < 1)
   1143                 goto bad;
   1144             client_min_proto = *(++argv);
   1145         } else if (strcmp(*argv, "-client_max_proto") == 0) {
   1146             if (--argc < 1)
   1147                 goto bad;
   1148             client_max_proto = *(++argv);
   1149         } else if (strcmp(*argv, "-should_negotiate") == 0) {
   1150             if (--argc < 1)
   1151                 goto bad;
   1152             should_negotiate = *(++argv);
   1153         } else if (strcmp(*argv, "-sn_client") == 0) {
   1154             if (--argc < 1)
   1155                 goto bad;
   1156             sn_client = *(++argv);
   1157         } else if (strcmp(*argv, "-sn_server1") == 0) {
   1158             if (--argc < 1)
   1159                 goto bad;
   1160             sn_server1 = *(++argv);
   1161         } else if (strcmp(*argv, "-sn_server2") == 0) {
   1162             if (--argc < 1)
   1163                 goto bad;
   1164             sn_server2 = *(++argv);
   1165         } else if (strcmp(*argv, "-sn_expect1") == 0) {
   1166             sn_expect = 1;
   1167         } else if (strcmp(*argv, "-sn_expect2") == 0) {
   1168             sn_expect = 2;
   1169         } else if (strcmp(*argv, "-server_sess_out") == 0) {
   1170             if (--argc < 1)
   1171                 goto bad;
   1172             server_sess_out = *(++argv);
   1173         } else if (strcmp(*argv, "-server_sess_in") == 0) {
   1174             if (--argc < 1)
   1175                 goto bad;
   1176             server_sess_in = *(++argv);
   1177         } else if (strcmp(*argv, "-client_sess_out") == 0) {
   1178             if (--argc < 1)
   1179                 goto bad;
   1180             client_sess_out = *(++argv);
   1181         } else if (strcmp(*argv, "-client_sess_in") == 0) {
   1182             if (--argc < 1)
   1183                 goto bad;
   1184             client_sess_in = *(++argv);
   1185         } else if (strcmp(*argv, "-should_reuse") == 0) {
   1186             if (--argc < 1)
   1187                 goto bad;
   1188             should_reuse = !!atoi(*(++argv));
   1189         } else if (strcmp(*argv, "-no_ticket") == 0) {
   1190             no_ticket = 1;
   1191         } else if (strcmp(*argv, "-client_ktls") == 0) {
   1192             client_ktls = 1;
   1193         } else if (strcmp(*argv, "-server_ktls") == 0) {
   1194             server_ktls = 1;
   1195         } else if (strcmp(*argv, "-provider") == 0) {
   1196             if (--argc < 1)
   1197                 goto bad;
   1198             provider = *(++argv);
   1199         } else if (strcmp(*argv, "-config") == 0) {
   1200             if (--argc < 1)
   1201                 goto bad;
   1202             config = *(++argv);
   1203         } else {
   1204             int rv;
   1205             arg = argv[0];
   1206             argn = argv[1];
   1207             /* Try to process command using SSL_CONF */
   1208             rv = SSL_CONF_cmd_argv(c_cctx, &argc, &argv);
   1209             /* If not processed try server */
   1210             if (rv == 0)
   1211                 rv = SSL_CONF_cmd_argv(s_cctx, &argc, &argv);
   1212             /* Recognised: store it for later use */
   1213             if (rv > 0) {
   1214                 if (rv == 1)
   1215                     argn = NULL;
   1216                 if (!conf_args) {
   1217                     conf_args = sk_OPENSSL_STRING_new_null();
   1218                     if (!conf_args)
   1219                         goto end;
   1220                 }
   1221                 if (!sk_OPENSSL_STRING_push(conf_args, arg))
   1222                     goto end;
   1223                 if (!sk_OPENSSL_STRING_push(conf_args, argn))
   1224                     goto end;
   1225                 continue;
   1226             }
   1227             if (rv == -3)
   1228                 BIO_printf(bio_err, "Missing argument for %s\n", arg);
   1229             else if (rv < 0)
   1230                 BIO_printf(bio_err, "Error with command %s\n", arg);
   1231             else if (rv == 0)
   1232                 BIO_printf(bio_err, "unknown option %s\n", arg);
   1233             badop = 1;
   1234             break;
   1235         }
   1236         argc--;
   1237         argv++;
   1238     }
   1239     if (badop) {
   1240  bad:
   1241         sv_usage();
   1242         goto end;
   1243     }
   1244 
   1245     if (ssl3 + tls1 + tls1_1 + tls1_2 + dtls + dtls1 + dtls12 > 1) {
   1246         fprintf(stderr, "At most one of -ssl3, -tls1, -tls1_1, -tls1_2, -dtls, -dtls1 or -dtls12 should "
   1247                 "be requested.\n");
   1248         EXIT(1);
   1249     }
   1250 
   1251 #ifdef OPENSSL_NO_SSL3
   1252     if (ssl3)
   1253         no_protocol = 1;
   1254     else
   1255 #endif
   1256 #ifdef OPENSSL_NO_TLS1
   1257     if (tls1)
   1258         no_protocol = 1;
   1259     else
   1260 #endif
   1261 #ifdef OPENSSL_NO_TLS1_1
   1262     if (tls1_1)
   1263         no_protocol = 1;
   1264     else
   1265 #endif
   1266 #ifdef OPENSSL_NO_TLS1_2
   1267     if (tls1_2)
   1268         no_protocol = 1;
   1269     else
   1270 #endif
   1271 #if defined(OPENSSL_NO_DTLS) || defined(OPENSSL_NO_DTLS1)
   1272     if (dtls1)
   1273         no_protocol = 1;
   1274     else
   1275 #endif
   1276 #if defined(OPENSSL_NO_DTLS) || defined(OPENSSL_NO_DTLS1_2)
   1277     if (dtls12)
   1278         no_protocol = 1;
   1279     else
   1280 #endif
   1281         no_protocol = 0;
   1282 
   1283     /*
   1284      * Testing was requested for a compiled-out protocol (e.g. SSLv3).
   1285      * Ideally, we would error out, but the generic test wrapper can't know
   1286      * when to expect failure. So we do nothing and return success.
   1287      */
   1288     if (no_protocol) {
   1289         fprintf(stderr, "Testing was requested for a disabled protocol. "
   1290                 "Skipping tests.\n");
   1291         ret = EXIT_SUCCESS;
   1292         goto end;
   1293     }
   1294 
   1295     if (!ssl3 && !tls1 && !tls1_1 && !tls1_2 && !dtls && !dtls1 && !dtls12 && number > 1
   1296             && !reuse && !force) {
   1297         fprintf(stderr, "This case cannot work.  Use -f to perform "
   1298                 "the test anyway (and\n-d to see what happens), "
   1299                 "or add one of -ssl3, -tls1, -tls1_1, -tls1_2, -dtls, -dtls1, -dtls12, -reuse\n"
   1300                 "to avoid protocol mismatch.\n");
   1301         EXIT(1);
   1302     }
   1303 
   1304     if (print_time) {
   1305         if (bio_type == BIO_MEM) {
   1306             fprintf(stderr, "Using BIO pair (-bio_pair)\n");
   1307             bio_type = BIO_PAIR;
   1308         }
   1309         if (number < 50 && !force)
   1310             fprintf(stderr,
   1311                     "Warning: For accurate timings, use more connections (e.g. -num 1000)\n");
   1312     }
   1313 
   1314 #ifndef OPENSSL_NO_COMP
   1315     if (comp == COMP_ZLIB)
   1316         cm = COMP_zlib();
   1317     if (cm != NULL) {
   1318         if (COMP_get_type(cm) != NID_undef) {
   1319             if (SSL_COMP_add_compression_method(comp, cm) != 0) {
   1320                 fprintf(stderr, "Failed to add compression method\n");
   1321                 ERR_print_errors_fp(stderr);
   1322             }
   1323         } else {
   1324             fprintf(stderr,
   1325                     "Warning: %s compression not supported\n",
   1326                     comp == COMP_ZLIB ? "zlib" : "unknown");
   1327             ERR_print_errors_fp(stderr);
   1328         }
   1329     }
   1330     ssl_comp_methods = SSL_COMP_get_compression_methods();
   1331     n = sk_SSL_COMP_num(ssl_comp_methods);
   1332     if (n) {
   1333         int j;
   1334         printf("Available compression methods:");
   1335         for (j = 0; j < n; j++) {
   1336             SSL_COMP *c = sk_SSL_COMP_value(ssl_comp_methods, j);
   1337             printf("  %s:%d", SSL_COMP_get0_name(c), SSL_COMP_get_id(c));
   1338         }
   1339         printf("\n");
   1340     }
   1341 #endif
   1342 
   1343 #ifndef OPENSSL_NO_TLS
   1344     meth = TLS_method();
   1345     if (ssl3) {
   1346         min_version = SSL3_VERSION;
   1347         max_version = SSL3_VERSION;
   1348     } else if (tls1) {
   1349         min_version = TLS1_VERSION;
   1350         max_version = TLS1_VERSION;
   1351     } else if (tls1_1) {
   1352         min_version = TLS1_1_VERSION;
   1353         max_version = TLS1_1_VERSION;
   1354     } else if (tls1_2) {
   1355         min_version = TLS1_2_VERSION;
   1356         max_version = TLS1_2_VERSION;
   1357     } else {
   1358         min_version = 0;
   1359 # if defined(OPENSSL_NO_EC) && defined(OPENSSL_NO_DH)
   1360         /* We only have ec and dh based built-in groups for TLSv1.3 */
   1361         max_version = TLS1_2_VERSION;
   1362 # else
   1363         max_version = 0;
   1364 # endif
   1365     }
   1366 #endif
   1367 #ifndef OPENSSL_NO_DTLS
   1368     if (dtls || dtls1 || dtls12) {
   1369         meth = DTLS_method();
   1370         if (dtls1) {
   1371             min_version = DTLS1_VERSION;
   1372             max_version = DTLS1_VERSION;
   1373         } else if (dtls12) {
   1374             min_version = DTLS1_2_VERSION;
   1375             max_version = DTLS1_2_VERSION;
   1376         } else {
   1377             min_version = 0;
   1378             max_version = 0;
   1379         }
   1380     }
   1381 #endif
   1382 
   1383     if (provider != NULL
   1384             && !test_get_libctx(&libctx, &defctxnull, config, &thisprov, provider))
   1385         goto end;
   1386 
   1387     c_ctx = SSL_CTX_new_ex(libctx, NULL, meth);
   1388     s_ctx = SSL_CTX_new_ex(libctx, NULL, meth);
   1389     s_ctx2 = SSL_CTX_new_ex(libctx, NULL, meth); /* no SSL_CTX_dup! */
   1390     if ((c_ctx == NULL) || (s_ctx == NULL) || (s_ctx2 == NULL)) {
   1391         ERR_print_errors(bio_err);
   1392         goto end;
   1393     }
   1394     /*
   1395      * Since we will use low security ciphersuites and keys for testing set
   1396      * security level to zero by default. Tests can override this by adding
   1397      * "@SECLEVEL=n" to the cipher string.
   1398      */
   1399     SSL_CTX_set_security_level(c_ctx, 0);
   1400     SSL_CTX_set_security_level(s_ctx, 0);
   1401     SSL_CTX_set_security_level(s_ctx2, 0);
   1402 
   1403     if (no_ticket) {
   1404         SSL_CTX_set_options(c_ctx, SSL_OP_NO_TICKET);
   1405         SSL_CTX_set_options(s_ctx, SSL_OP_NO_TICKET);
   1406     }
   1407 
   1408     if (SSL_CTX_set_min_proto_version(c_ctx, min_version) == 0)
   1409         goto end;
   1410     if (SSL_CTX_set_max_proto_version(c_ctx, max_version) == 0)
   1411         goto end;
   1412     if (SSL_CTX_set_min_proto_version(s_ctx, min_version) == 0)
   1413         goto end;
   1414     if (SSL_CTX_set_max_proto_version(s_ctx, max_version) == 0)
   1415         goto end;
   1416 
   1417     if (cipher != NULL) {
   1418         if (strcmp(cipher, "") == 0) {
   1419             if (!SSL_CTX_set_cipher_list(c_ctx, cipher)) {
   1420                 if (ERR_GET_REASON(ERR_peek_error()) == SSL_R_NO_CIPHER_MATCH) {
   1421                     ERR_clear_error();
   1422                 } else {
   1423                     ERR_print_errors(bio_err);
   1424                     goto end;
   1425                 }
   1426             } else {
   1427                 /* Should have failed when clearing all TLSv1.2 ciphers. */
   1428                 fprintf(stderr, "CLEARING ALL TLSv1.2 CIPHERS SHOULD FAIL\n");
   1429                 goto end;
   1430             }
   1431 
   1432             if (!SSL_CTX_set_cipher_list(s_ctx, cipher)) {
   1433                 if (ERR_GET_REASON(ERR_peek_error()) == SSL_R_NO_CIPHER_MATCH) {
   1434                     ERR_clear_error();
   1435                 } else {
   1436                     ERR_print_errors(bio_err);
   1437                     goto end;
   1438                 }
   1439             } else {
   1440                 /* Should have failed when clearing all TLSv1.2 ciphers. */
   1441                 fprintf(stderr, "CLEARING ALL TLSv1.2 CIPHERS SHOULD FAIL\n");
   1442                 goto end;
   1443             }
   1444 
   1445             if (!SSL_CTX_set_cipher_list(s_ctx2, cipher)) {
   1446                 if (ERR_GET_REASON(ERR_peek_error()) == SSL_R_NO_CIPHER_MATCH) {
   1447                     ERR_clear_error();
   1448                 } else {
   1449                     ERR_print_errors(bio_err);
   1450                     goto end;
   1451                 }
   1452             } else {
   1453                 /* Should have failed when clearing all TLSv1.2 ciphers. */
   1454                 fprintf(stderr, "CLEARING ALL TLSv1.2 CIPHERS SHOULD FAIL\n");
   1455                 goto end;
   1456             }
   1457         } else {
   1458             if (!SSL_CTX_set_cipher_list(c_ctx, cipher)
   1459                     || !SSL_CTX_set_cipher_list(s_ctx, cipher)
   1460                     || !SSL_CTX_set_cipher_list(s_ctx2, cipher)) {
   1461                 ERR_print_errors(bio_err);
   1462                 goto end;
   1463             }
   1464         }
   1465     }
   1466     if (ciphersuites != NULL) {
   1467         if (!SSL_CTX_set_ciphersuites(c_ctx, ciphersuites)
   1468             || !SSL_CTX_set_ciphersuites(s_ctx, ciphersuites)
   1469             || !SSL_CTX_set_ciphersuites(s_ctx2, ciphersuites)) {
   1470             ERR_print_errors(bio_err);
   1471             goto end;
   1472         }
   1473     }
   1474 
   1475 #ifndef OPENSSL_NO_CT
   1476     if (ct_validation &&
   1477         !SSL_CTX_enable_ct(c_ctx, SSL_CT_VALIDATION_STRICT)) {
   1478         ERR_print_errors(bio_err);
   1479         goto end;
   1480     }
   1481 #endif
   1482 
   1483     /* Process SSL_CONF arguments */
   1484     SSL_CONF_CTX_set_ssl_ctx(c_cctx, c_ctx);
   1485     SSL_CONF_CTX_set_ssl_ctx(s_cctx, s_ctx);
   1486     SSL_CONF_CTX_set_ssl_ctx(s_cctx2, s_ctx2);
   1487 
   1488     for (i = 0; i < sk_OPENSSL_STRING_num(conf_args); i += 2) {
   1489         int rv;
   1490         arg = sk_OPENSSL_STRING_value(conf_args, i);
   1491         argn = sk_OPENSSL_STRING_value(conf_args, i + 1);
   1492         rv = SSL_CONF_cmd(c_cctx, arg, argn);
   1493         /* If not recognised use server context */
   1494         if (rv == -2) {
   1495             rv = SSL_CONF_cmd(s_cctx2, arg, argn);
   1496             if (rv > 0)
   1497                 rv = SSL_CONF_cmd(s_cctx, arg, argn);
   1498         }
   1499         if (rv <= 0) {
   1500             BIO_printf(bio_err, "Error processing %s %s\n",
   1501                        arg, argn ? argn : "");
   1502             ERR_print_errors(bio_err);
   1503             goto end;
   1504         }
   1505     }
   1506 
   1507     if (!SSL_CONF_CTX_finish(s_cctx) || !SSL_CONF_CTX_finish(c_cctx) || !SSL_CONF_CTX_finish(s_cctx2)) {
   1508         BIO_puts(bio_err, "Error finishing context\n");
   1509         ERR_print_errors(bio_err);
   1510         goto end;
   1511     }
   1512 #ifndef OPENSSL_NO_DH
   1513     if (!no_dhe) {
   1514         if (dhe1024dsa)
   1515             dhpkey = get_dh1024dsa(libctx);
   1516         else if (dhe512)
   1517             dhpkey = get_dh512(libctx);
   1518         else if (dhe4096)
   1519             dhpkey = get_dh4096(libctx);
   1520         else
   1521             dhpkey = get_dh2048(libctx);
   1522 
   1523         if (dhpkey == NULL || !EVP_PKEY_up_ref(dhpkey)) {
   1524             EVP_PKEY_free(dhpkey);
   1525             BIO_puts(bio_err, "Error getting DH parameters\n");
   1526             ERR_print_errors(bio_err);
   1527             goto end;
   1528         }
   1529         if (!SSL_CTX_set0_tmp_dh_pkey(s_ctx, dhpkey))
   1530             EVP_PKEY_free(dhpkey);
   1531         if (!SSL_CTX_set0_tmp_dh_pkey(s_ctx2, dhpkey))
   1532             EVP_PKEY_free(dhpkey);
   1533     }
   1534 #endif
   1535 
   1536     if (!(SSL_CTX_load_verify_file(s_ctx, CAfile)
   1537           || SSL_CTX_load_verify_dir(s_ctx, CApath))
   1538         || !SSL_CTX_set_default_verify_paths(s_ctx)
   1539         || !(SSL_CTX_load_verify_file(s_ctx2, CAfile)
   1540              || SSL_CTX_load_verify_dir(s_ctx2, CApath))
   1541         || !SSL_CTX_set_default_verify_paths(s_ctx2)
   1542         || !(SSL_CTX_load_verify_file(c_ctx, CAfile)
   1543              || SSL_CTX_load_verify_dir(c_ctx, CApath))
   1544         || !SSL_CTX_set_default_verify_paths(c_ctx)) {
   1545         ERR_print_errors(bio_err);
   1546     }
   1547 
   1548 #ifndef OPENSSL_NO_CT
   1549     if (!SSL_CTX_set_default_ctlog_list_file(s_ctx) ||
   1550         !SSL_CTX_set_default_ctlog_list_file(s_ctx2) ||
   1551         !SSL_CTX_set_default_ctlog_list_file(c_ctx)) {
   1552         ERR_print_errors(bio_err);
   1553     }
   1554 #endif
   1555 
   1556     if (client_auth) {
   1557         printf("client authentication\n");
   1558         SSL_CTX_set_verify(s_ctx,
   1559                            SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT,
   1560                            verify_callback);
   1561         SSL_CTX_set_verify(s_ctx2,
   1562                            SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT,
   1563                            verify_callback);
   1564         SSL_CTX_set_cert_verify_callback(s_ctx, app_verify_callback,
   1565                                          &app_verify_arg);
   1566         SSL_CTX_set_cert_verify_callback(s_ctx2, app_verify_callback,
   1567                                          &app_verify_arg);
   1568     }
   1569     if (server_auth) {
   1570         printf("server authentication\n");
   1571         SSL_CTX_set_verify(c_ctx, SSL_VERIFY_PEER, verify_callback);
   1572         SSL_CTX_set_cert_verify_callback(c_ctx, app_verify_callback,
   1573                                          &app_verify_arg);
   1574     }
   1575 
   1576     {
   1577         int session_id_context = 0;
   1578         if (!SSL_CTX_set_session_id_context(s_ctx, (void *)&session_id_context,
   1579                                             sizeof(session_id_context)) ||
   1580             !SSL_CTX_set_session_id_context(s_ctx2, (void *)&session_id_context,
   1581                                             sizeof(session_id_context))) {
   1582             ERR_print_errors(bio_err);
   1583             goto end;
   1584         }
   1585     }
   1586 
   1587     /* Use PSK only if PSK key is given */
   1588     if (psk_key != NULL) {
   1589         /*
   1590          * no_psk is used to avoid putting psk command to openssl tool
   1591          */
   1592         if (no_psk) {
   1593             /*
   1594              * if PSK is not compiled in and psk key is given, do nothing and
   1595              * exit successfully
   1596              */
   1597             ret = EXIT_SUCCESS;
   1598             goto end;
   1599         }
   1600 #ifndef OPENSSL_NO_PSK
   1601         SSL_CTX_set_psk_client_callback(c_ctx, psk_client_callback);
   1602         SSL_CTX_set_psk_server_callback(s_ctx, psk_server_callback);
   1603         SSL_CTX_set_psk_server_callback(s_ctx2, psk_server_callback);
   1604         if (debug)
   1605             BIO_printf(bio_err, "setting PSK identity hint to s_ctx\n");
   1606         if (!SSL_CTX_use_psk_identity_hint(s_ctx, "ctx server identity_hint") ||
   1607             !SSL_CTX_use_psk_identity_hint(s_ctx2, "ctx server identity_hint")) {
   1608             BIO_printf(bio_err, "error setting PSK identity hint to s_ctx\n");
   1609             ERR_print_errors(bio_err);
   1610             goto end;
   1611         }
   1612 #endif
   1613     }
   1614 
   1615 #ifndef OPENSSL_NO_NEXTPROTONEG
   1616     if (npn_client) {
   1617         SSL_CTX_set_next_proto_select_cb(c_ctx, cb_client_npn, NULL);
   1618     }
   1619     if (npn_server) {
   1620         if (npn_server_reject) {
   1621             BIO_printf(bio_err,
   1622                        "Can't have both -npn_server and -npn_server_reject\n");
   1623             goto end;
   1624         }
   1625         SSL_CTX_set_npn_advertised_cb(s_ctx, cb_server_npn, NULL);
   1626         SSL_CTX_set_npn_advertised_cb(s_ctx2, cb_server_npn, NULL);
   1627     }
   1628     if (npn_server_reject) {
   1629         SSL_CTX_set_npn_advertised_cb(s_ctx, cb_server_rejects_npn, NULL);
   1630         SSL_CTX_set_npn_advertised_cb(s_ctx2, cb_server_rejects_npn, NULL);
   1631     }
   1632 #endif
   1633 
   1634     if (serverinfo_sct) {
   1635         if (!SSL_CTX_add_client_custom_ext(c_ctx,
   1636                 TLSEXT_TYPE_signed_certificate_timestamp,
   1637                 NULL, NULL, NULL,
   1638                 serverinfo_cli_parse_cb, NULL)) {
   1639             BIO_printf(bio_err, "Error adding SCT extension\n");
   1640             goto end;
   1641         }
   1642     }
   1643     if (serverinfo_tack) {
   1644         if (!SSL_CTX_add_client_custom_ext(c_ctx, TACK_EXT_TYPE,
   1645                                       NULL, NULL, NULL,
   1646                                       serverinfo_cli_parse_cb, NULL)) {
   1647             BIO_printf(bio_err, "Error adding TACK extension\n");
   1648             goto end;
   1649         }
   1650     }
   1651     if (serverinfo_file)
   1652         if (!SSL_CTX_use_serverinfo_file(s_ctx, serverinfo_file) ||
   1653             !SSL_CTX_use_serverinfo_file(s_ctx2, serverinfo_file)) {
   1654             BIO_printf(bio_err, "missing serverinfo file\n");
   1655             goto end;
   1656         }
   1657 
   1658     if (custom_ext) {
   1659         if (!SSL_CTX_add_client_custom_ext(c_ctx, CUSTOM_EXT_TYPE_0,
   1660                                       custom_ext_0_cli_add_cb,
   1661                                       NULL, NULL,
   1662                                       custom_ext_0_cli_parse_cb, NULL)
   1663             || !SSL_CTX_add_client_custom_ext(c_ctx, CUSTOM_EXT_TYPE_1,
   1664                                       custom_ext_1_cli_add_cb,
   1665                                       NULL, NULL,
   1666                                       custom_ext_1_cli_parse_cb, NULL)
   1667             || !SSL_CTX_add_client_custom_ext(c_ctx, CUSTOM_EXT_TYPE_2,
   1668                                       custom_ext_2_cli_add_cb,
   1669                                       NULL, NULL,
   1670                                       custom_ext_2_cli_parse_cb, NULL)
   1671             || !SSL_CTX_add_client_custom_ext(c_ctx, CUSTOM_EXT_TYPE_3,
   1672                                       custom_ext_3_cli_add_cb,
   1673                                       NULL, NULL,
   1674                                       custom_ext_3_cli_parse_cb, NULL)
   1675             || !SSL_CTX_add_server_custom_ext(s_ctx, CUSTOM_EXT_TYPE_0,
   1676                                       custom_ext_0_srv_add_cb,
   1677                                       NULL, NULL,
   1678                                       custom_ext_0_srv_parse_cb, NULL)
   1679             || !SSL_CTX_add_server_custom_ext(s_ctx2, CUSTOM_EXT_TYPE_0,
   1680                                       custom_ext_0_srv_add_cb,
   1681                                       NULL, NULL,
   1682                                       custom_ext_0_srv_parse_cb, NULL)
   1683             || !SSL_CTX_add_server_custom_ext(s_ctx, CUSTOM_EXT_TYPE_1,
   1684                                       custom_ext_1_srv_add_cb,
   1685                                       NULL, NULL,
   1686                                       custom_ext_1_srv_parse_cb, NULL)
   1687             || !SSL_CTX_add_server_custom_ext(s_ctx2, CUSTOM_EXT_TYPE_1,
   1688                                       custom_ext_1_srv_add_cb,
   1689                                       NULL, NULL,
   1690                                       custom_ext_1_srv_parse_cb, NULL)
   1691             || !SSL_CTX_add_server_custom_ext(s_ctx, CUSTOM_EXT_TYPE_2,
   1692                                       custom_ext_2_srv_add_cb,
   1693                                       NULL, NULL,
   1694                                       custom_ext_2_srv_parse_cb, NULL)
   1695             || !SSL_CTX_add_server_custom_ext(s_ctx2, CUSTOM_EXT_TYPE_2,
   1696                                       custom_ext_2_srv_add_cb,
   1697                                       NULL, NULL,
   1698                                       custom_ext_2_srv_parse_cb, NULL)
   1699             || !SSL_CTX_add_server_custom_ext(s_ctx, CUSTOM_EXT_TYPE_3,
   1700                                       custom_ext_3_srv_add_cb,
   1701                                       NULL, NULL,
   1702                                       custom_ext_3_srv_parse_cb, NULL)
   1703             || !SSL_CTX_add_server_custom_ext(s_ctx2, CUSTOM_EXT_TYPE_3,
   1704                                       custom_ext_3_srv_add_cb,
   1705                                       NULL, NULL,
   1706                                       custom_ext_3_srv_parse_cb, NULL)) {
   1707             BIO_printf(bio_err, "Error setting custom extensions\n");
   1708             goto end;
   1709         }
   1710     }
   1711 
   1712     if (alpn_server)
   1713         SSL_CTX_set_alpn_select_cb(s_ctx, cb_server_alpn, alpn_server);
   1714     if (alpn_server2)
   1715         SSL_CTX_set_alpn_select_cb(s_ctx2, cb_server_alpn, alpn_server2);
   1716 
   1717     if (alpn_client) {
   1718         size_t alpn_len;
   1719         unsigned char *alpn = next_protos_parse(&alpn_len, alpn_client);
   1720 
   1721         if (alpn == NULL) {
   1722             BIO_printf(bio_err, "Error parsing -alpn_client argument\n");
   1723             goto end;
   1724         }
   1725         /* Returns 0 on success!! */
   1726         if (SSL_CTX_set_alpn_protos(c_ctx, alpn, alpn_len)) {
   1727             BIO_printf(bio_err, "Error setting ALPN\n");
   1728             OPENSSL_free(alpn);
   1729             goto end;
   1730         }
   1731         OPENSSL_free(alpn);
   1732     }
   1733 
   1734     if (server_sess_in != NULL) {
   1735         server_sess = read_session(server_sess_in);
   1736         if (server_sess == NULL)
   1737             goto end;
   1738     }
   1739     if (client_sess_in != NULL) {
   1740         client_sess = read_session(client_sess_in);
   1741         if (client_sess == NULL)
   1742             goto end;
   1743     }
   1744 
   1745     if (server_sess_out != NULL || server_sess_in != NULL) {
   1746         char *keys;
   1747         long size;
   1748 
   1749         /* Use a fixed key so that we can decrypt the ticket. */
   1750         size = SSL_CTX_set_tlsext_ticket_keys(s_ctx, NULL, 0);
   1751         keys = OPENSSL_zalloc(size);
   1752         if (keys == NULL)
   1753             goto end;
   1754         SSL_CTX_set_tlsext_ticket_keys(s_ctx, keys, size);
   1755         OPENSSL_free(keys);
   1756     }
   1757 
   1758     if (sn_server1 != NULL || sn_server2 != NULL)
   1759         SSL_CTX_set_tlsext_servername_callback(s_ctx, servername_cb);
   1760 
   1761     c_ssl = SSL_new(c_ctx);
   1762     s_ssl = SSL_new(s_ctx);
   1763     if (c_ssl == NULL || s_ssl == NULL)
   1764         goto end;
   1765 
   1766     if (sn_client)
   1767         SSL_set_tlsext_host_name(c_ssl, sn_client);
   1768     if (client_ktls)
   1769         SSL_set_options(c_ssl, SSL_OP_ENABLE_KTLS);
   1770     if (server_ktls)
   1771         SSL_set_options(s_ssl, SSL_OP_ENABLE_KTLS);
   1772 
   1773     if (!set_protocol_version(server_min_proto, s_ssl, SSL_CTRL_SET_MIN_PROTO_VERSION))
   1774         goto end;
   1775     if (!set_protocol_version(server_max_proto, s_ssl, SSL_CTRL_SET_MAX_PROTO_VERSION))
   1776         goto end;
   1777     if (!set_protocol_version(client_min_proto, c_ssl, SSL_CTRL_SET_MIN_PROTO_VERSION))
   1778         goto end;
   1779     if (!set_protocol_version(client_max_proto, c_ssl, SSL_CTRL_SET_MAX_PROTO_VERSION))
   1780         goto end;
   1781 
   1782     if (server_sess) {
   1783         if (SSL_CTX_add_session(s_ctx, server_sess) == 0) {
   1784             BIO_printf(bio_err, "Can't add server session\n");
   1785             ERR_print_errors(bio_err);
   1786             goto end;
   1787         }
   1788     }
   1789 
   1790     BIO_printf(bio_stdout, "Doing handshakes=%d bytes=%ld\n", number, bytes);
   1791     for (i = 0; i < number; i++) {
   1792         if (!reuse) {
   1793             if (!SSL_set_session(c_ssl, NULL)) {
   1794                 BIO_printf(bio_err, "Failed to set session\n");
   1795                 goto end;
   1796             }
   1797         }
   1798         if (client_sess_in != NULL) {
   1799             if (SSL_set_session(c_ssl, client_sess) == 0) {
   1800                 BIO_printf(bio_err, "Can't set client session\n");
   1801                 ERR_print_errors(bio_err);
   1802                 goto end;
   1803             }
   1804         }
   1805         switch (bio_type) {
   1806         case BIO_MEM:
   1807             ret = doit(s_ssl, c_ssl, bytes);
   1808             break;
   1809         case BIO_PAIR:
   1810             ret = doit_biopair(s_ssl, c_ssl, bytes, &s_time, &c_time);
   1811             break;
   1812 #ifndef OPENSSL_NO_SOCK
   1813         case BIO_IPV4:
   1814             ret = doit_localhost(s_ssl, c_ssl, BIO_FAMILY_IPV4,
   1815                                  bytes, &s_time, &c_time);
   1816             break;
   1817         case BIO_IPV6:
   1818             ret = doit_localhost(s_ssl, c_ssl, BIO_FAMILY_IPV6,
   1819                                  bytes, &s_time, &c_time);
   1820             break;
   1821 #else
   1822         case BIO_IPV4:
   1823         case BIO_IPV6:
   1824             ret = EXIT_FAILURE;
   1825             goto end;
   1826 #endif
   1827         }
   1828         if (ret != EXIT_SUCCESS)
   1829             break;
   1830     }
   1831 
   1832     if (should_negotiate && ret == EXIT_SUCCESS &&
   1833         strcmp(should_negotiate, "fail-server") != 0 &&
   1834         strcmp(should_negotiate, "fail-client") != 0) {
   1835         int version = protocol_from_string(should_negotiate);
   1836         if (version < 0) {
   1837             BIO_printf(bio_err, "Error parsing: %s\n", should_negotiate);
   1838             ret = EXIT_FAILURE;
   1839             goto end;
   1840         }
   1841         if (SSL_version(c_ssl) != version) {
   1842             BIO_printf(bio_err, "Unexpected version negotiated. "
   1843                 "Expected: %s, got %s\n", should_negotiate, SSL_get_version(c_ssl));
   1844             ret = EXIT_FAILURE;
   1845             goto end;
   1846         }
   1847     }
   1848 
   1849     if (should_reuse != -1) {
   1850         if (SSL_session_reused(s_ssl) != should_reuse ||
   1851             SSL_session_reused(c_ssl) != should_reuse) {
   1852             BIO_printf(bio_err, "Unexpected session reuse state. "
   1853                 "Expected: %d, server: %d, client: %d\n", should_reuse,
   1854                 SSL_session_reused(s_ssl), SSL_session_reused(c_ssl));
   1855             ret = EXIT_FAILURE;
   1856             goto end;
   1857         }
   1858     }
   1859 
   1860     if (server_sess_out != NULL) {
   1861         if (write_session(server_sess_out, SSL_get_session(s_ssl)) == 0) {
   1862             ret = EXIT_FAILURE;
   1863             goto end;
   1864         }
   1865     }
   1866     if (client_sess_out != NULL) {
   1867         if (write_session(client_sess_out, SSL_get_session(c_ssl)) == 0) {
   1868             ret = EXIT_FAILURE;
   1869             goto end;
   1870         }
   1871     }
   1872 
   1873     if (!verbose) {
   1874         print_details(c_ssl, "");
   1875     }
   1876     if (print_time) {
   1877 #ifdef CLOCKS_PER_SEC
   1878         /*
   1879          * "To determine the time in seconds, the value returned by the clock
   1880          * function should be divided by the value of the macro
   1881          * CLOCKS_PER_SEC." -- ISO/IEC 9899
   1882          */
   1883         BIO_printf(bio_stdout, "Approximate total server time: %6.2f s\n"
   1884                    "Approximate total client time: %6.2f s\n",
   1885                    (double)s_time / CLOCKS_PER_SEC,
   1886                    (double)c_time / CLOCKS_PER_SEC);
   1887 #else
   1888         BIO_printf(bio_stdout,
   1889                    "Approximate total server time: %6.2f units\n"
   1890                    "Approximate total client time: %6.2f units\n",
   1891                    (double)s_time, (double)c_time);
   1892 #endif
   1893     }
   1894 
   1895  end:
   1896     SSL_free(s_ssl);
   1897     SSL_free(c_ssl);
   1898     SSL_CTX_free(s_ctx);
   1899     SSL_CTX_free(s_ctx2);
   1900     SSL_CTX_free(c_ctx);
   1901     SSL_CONF_CTX_free(s_cctx);
   1902     SSL_CONF_CTX_free(s_cctx2);
   1903     SSL_CONF_CTX_free(c_cctx);
   1904     sk_OPENSSL_STRING_free(conf_args);
   1905 
   1906     BIO_free(bio_stdout);
   1907 
   1908     SSL_SESSION_free(server_sess);
   1909     SSL_SESSION_free(client_sess);
   1910 
   1911     OSSL_PROVIDER_unload(defctxnull);
   1912     OSSL_PROVIDER_unload(thisprov);
   1913     OSSL_LIB_CTX_free(libctx);
   1914 
   1915     BIO_free(bio_err);
   1916     EXIT(ret);
   1917 }
   1918 
   1919 #ifndef OPENSSL_NO_SOCK
   1920 int doit_localhost(SSL *s_ssl, SSL *c_ssl, int family, long count,
   1921                    clock_t *s_time, clock_t *c_time)
   1922 {
   1923     long cw_num = count, cr_num = count, sw_num = count, sr_num = count;
   1924     BIO *s_ssl_bio = NULL, *c_ssl_bio = NULL;
   1925     BIO *acpt = NULL, *server = NULL, *client = NULL;
   1926     char addr_str[40];
   1927     int ret = EXIT_FAILURE;
   1928     int err_in_client = 0;
   1929     int err_in_server = 0;
   1930 
   1931     acpt = BIO_new_accept(family == BIO_FAMILY_IPV4 ? "127.0.0.1:0"
   1932                                                     : "[::1]:0");
   1933     if (acpt == NULL)
   1934         goto err;
   1935     BIO_set_accept_ip_family(acpt, family);
   1936     BIO_set_bind_mode(acpt, BIO_SOCK_NONBLOCK | BIO_SOCK_REUSEADDR);
   1937     if (BIO_do_accept(acpt) <= 0)
   1938         goto err;
   1939 
   1940     BIO_snprintf(addr_str, sizeof(addr_str), ":%s", BIO_get_accept_port(acpt));
   1941 
   1942     client = BIO_new_connect(addr_str);
   1943     if (!client)
   1944         goto err;
   1945     BIO_set_conn_ip_family(client, family);
   1946 
   1947     if (BIO_set_nbio(client, 1) <= 0)
   1948         goto err;
   1949     if (BIO_set_nbio(acpt, 1) <= 0)
   1950         goto err;
   1951 
   1952     {
   1953         int st_connect = 0, st_accept = 0;
   1954 
   1955         while(!st_connect || !st_accept) {
   1956             if (!st_connect) {
   1957                 if (BIO_do_connect(client) <= 0) {
   1958                     if (!BIO_should_retry(client))
   1959                         goto err;
   1960                 } else {
   1961                     st_connect = 1;
   1962                 }
   1963             }
   1964             if (!st_accept) {
   1965                 if (BIO_do_accept(acpt) <= 0) {
   1966                     if (!BIO_should_retry(acpt))
   1967                         goto err;
   1968                 } else {
   1969                     st_accept = 1;
   1970                 }
   1971             }
   1972         }
   1973     }
   1974     /* We're not interested in accepting further connects */
   1975     server = BIO_pop(acpt);
   1976     BIO_free_all(acpt);
   1977     acpt = NULL;
   1978 
   1979     s_ssl_bio = BIO_new(BIO_f_ssl());
   1980     if (!s_ssl_bio)
   1981         goto err;
   1982 
   1983     c_ssl_bio = BIO_new(BIO_f_ssl());
   1984     if (!c_ssl_bio)
   1985         goto err;
   1986 
   1987     SSL_set_connect_state(c_ssl);
   1988     SSL_set_bio(c_ssl, client, client);
   1989     (void)BIO_set_ssl(c_ssl_bio, c_ssl, BIO_NOCLOSE);
   1990 
   1991     SSL_set_accept_state(s_ssl);
   1992     SSL_set_bio(s_ssl, server, server);
   1993     (void)BIO_set_ssl(s_ssl_bio, s_ssl, BIO_NOCLOSE);
   1994 
   1995     do {
   1996         /*-
   1997          * c_ssl_bio:          SSL filter BIO
   1998          *
   1999          * client:             I/O for SSL library
   2000          *
   2001          *
   2002          * server:             I/O for SSL library
   2003          *
   2004          * s_ssl_bio:          SSL filter BIO
   2005          */
   2006 
   2007         /*
   2008          * We have non-blocking behaviour throughout this test program, but
   2009          * can be sure that there is *some* progress in each iteration; so we
   2010          * don't have to worry about ..._SHOULD_READ or ..._SHOULD_WRITE --
   2011          * we just try everything in each iteration
   2012          */
   2013 
   2014         {
   2015             /* CLIENT */
   2016 
   2017             char cbuf[1024 * 8];
   2018             int i, r;
   2019             clock_t c_clock = clock();
   2020 
   2021             memset(cbuf, 0, sizeof(cbuf));
   2022 
   2023             if (debug)
   2024                 if (SSL_in_init(c_ssl))
   2025                     printf("client waiting in SSL_connect - %s\n",
   2026                            SSL_state_string_long(c_ssl));
   2027 
   2028             if (cw_num > 0) {
   2029                 /* Write to server. */
   2030 
   2031                 if (cw_num > (long)sizeof(cbuf))
   2032                     i = sizeof(cbuf);
   2033                 else
   2034                     i = (int)cw_num;
   2035                 r = BIO_write(c_ssl_bio, cbuf, i);
   2036                 if (r < 0) {
   2037                     if (!BIO_should_retry(c_ssl_bio)) {
   2038                         fprintf(stderr, "ERROR in CLIENT (write)\n");
   2039                         err_in_client = 1;
   2040                         goto err;
   2041                     }
   2042                     /*
   2043                      * BIO_should_retry(...) can just be ignored here. The
   2044                      * library expects us to call BIO_write with the same
   2045                      * arguments again, and that's what we will do in the
   2046                      * next iteration.
   2047                      */
   2048                 } else if (r == 0) {
   2049                     fprintf(stderr, "SSL CLIENT STARTUP FAILED\n");
   2050                     goto err;
   2051                 } else {
   2052                     if (debug)
   2053                         printf("client wrote %d\n", r);
   2054                     cw_num -= r;
   2055                 }
   2056             }
   2057 
   2058             if (cr_num > 0) {
   2059                 /* Read from server. */
   2060 
   2061                 r = BIO_read(c_ssl_bio, cbuf, sizeof(cbuf));
   2062                 if (r < 0) {
   2063                     if (!BIO_should_retry(c_ssl_bio)) {
   2064                         fprintf(stderr, "ERROR in CLIENT (read)\n");
   2065                         err_in_client = 1;
   2066                         goto err;
   2067                     }
   2068                     /*
   2069                      * Again, "BIO_should_retry" can be ignored.
   2070                      */
   2071                 } else if (r == 0) {
   2072                     fprintf(stderr, "SSL CLIENT STARTUP FAILED\n");
   2073                     goto err;
   2074                 } else {
   2075                     if (debug)
   2076                         printf("client read %d\n", r);
   2077                     cr_num -= r;
   2078                 }
   2079             }
   2080 
   2081             /*
   2082              * c_time and s_time increments will typically be very small
   2083              * (depending on machine speed and clock tick intervals), but
   2084              * sampling over a large number of connections should result in
   2085              * fairly accurate figures.  We cannot guarantee a lot, however
   2086              * -- if each connection lasts for exactly one clock tick, it
   2087              * will be counted only for the client or only for the server or
   2088              * even not at all.
   2089              */
   2090             *c_time += (clock() - c_clock);
   2091         }
   2092 
   2093         {
   2094             /* SERVER */
   2095 
   2096             char sbuf[1024 * 8];
   2097             int i, r;
   2098             clock_t s_clock = clock();
   2099 
   2100             memset(sbuf, 0, sizeof(sbuf));
   2101 
   2102             if (debug)
   2103                 if (SSL_in_init(s_ssl))
   2104                     printf("server waiting in SSL_accept - %s\n",
   2105                            SSL_state_string_long(s_ssl));
   2106 
   2107             if (sw_num > 0) {
   2108                 /* Write to client. */
   2109 
   2110                 if (sw_num > (long)sizeof(sbuf))
   2111                     i = sizeof(sbuf);
   2112                 else
   2113                     i = (int)sw_num;
   2114                 r = BIO_write(s_ssl_bio, sbuf, i);
   2115                 if (r < 0) {
   2116                     if (!BIO_should_retry(s_ssl_bio)) {
   2117                         fprintf(stderr, "ERROR in SERVER (write)\n");
   2118                         err_in_server = 1;
   2119                         goto err;
   2120                     }
   2121                     /* Ignore "BIO_should_retry". */
   2122                 } else if (r == 0) {
   2123                     fprintf(stderr, "SSL SERVER STARTUP FAILED\n");
   2124                     goto err;
   2125                 } else {
   2126                     if (debug)
   2127                         printf("server wrote %d\n", r);
   2128                     sw_num -= r;
   2129                 }
   2130             }
   2131 
   2132             if (sr_num > 0) {
   2133                 /* Read from client. */
   2134 
   2135                 r = BIO_read(s_ssl_bio, sbuf, sizeof(sbuf));
   2136                 if (r < 0) {
   2137                     if (!BIO_should_retry(s_ssl_bio)) {
   2138                         fprintf(stderr, "ERROR in SERVER (read)\n");
   2139                         err_in_server = 1;
   2140                         goto err;
   2141                     }
   2142                     /* blah, blah */
   2143                 } else if (r == 0) {
   2144                     fprintf(stderr, "SSL SERVER STARTUP FAILED\n");
   2145                     goto err;
   2146                 } else {
   2147                     if (debug)
   2148                         printf("server read %d\n", r);
   2149                     sr_num -= r;
   2150                 }
   2151             }
   2152 
   2153             *s_time += (clock() - s_clock);
   2154         }
   2155     }
   2156     while (cw_num > 0 || cr_num > 0 || sw_num > 0 || sr_num > 0);
   2157 
   2158     if (verbose) {
   2159         print_details(c_ssl, "DONE via TCP connect: ");
   2160 
   2161         if (BIO_get_ktls_send(SSL_get_wbio(s_ssl))
   2162                 && BIO_get_ktls_recv(SSL_get_rbio(s_ssl)))
   2163             BIO_printf(bio_stdout, "Server using Kernel TLS in both directions\n");
   2164         else if (BIO_get_ktls_send(SSL_get_wbio(s_ssl)))
   2165             BIO_printf(bio_stdout, "Server using Kernel TLS for sending\n");
   2166         else if (BIO_get_ktls_recv(SSL_get_rbio(s_ssl)))
   2167             BIO_printf(bio_stdout, "Server using Kernel TLS for receiving\n");
   2168 
   2169         if (BIO_get_ktls_send(SSL_get_wbio(c_ssl))
   2170                 && BIO_get_ktls_recv(SSL_get_rbio(c_ssl)))
   2171             BIO_printf(bio_stdout, "Client using Kernel TLS in both directions\n");
   2172         else if (BIO_get_ktls_send(SSL_get_wbio(c_ssl)))
   2173             BIO_printf(bio_stdout, "Client using Kernel TLS for sending\n");
   2174         else if (BIO_get_ktls_recv(SSL_get_rbio(c_ssl)))
   2175             BIO_printf(bio_stdout, "Client using Kernel TLS for receiving\n");
   2176     }
   2177 # ifndef OPENSSL_NO_NEXTPROTONEG
   2178     if (verify_npn(c_ssl, s_ssl) < 0)
   2179         goto end;
   2180 # endif
   2181     if (verify_serverinfo() < 0) {
   2182         fprintf(stderr, "Server info verify error\n");
   2183         goto err;
   2184     }
   2185     if (verify_alpn(c_ssl, s_ssl) < 0
   2186             || verify_servername(c_ssl, s_ssl) < 0)
   2187         goto err;
   2188 
   2189     if (custom_ext_error) {
   2190         fprintf(stderr, "Custom extension error\n");
   2191         goto err;
   2192     }
   2193 
   2194 # ifndef OPENSSL_NO_NEXTPROTONEG
   2195  end:
   2196 # endif
   2197     ret = EXIT_SUCCESS;
   2198 
   2199  err:
   2200     ERR_print_errors(bio_err);
   2201 
   2202     BIO_free_all(acpt);
   2203     BIO_free(server);
   2204     BIO_free(client);
   2205     BIO_free(s_ssl_bio);
   2206     BIO_free(c_ssl_bio);
   2207 
   2208     if (should_negotiate != NULL && strcmp(should_negotiate, "fail-client") == 0)
   2209         ret = (err_in_client != 0) ? EXIT_SUCCESS : EXIT_FAILURE;
   2210     else if (should_negotiate != NULL && strcmp(should_negotiate, "fail-server") == 0)
   2211         ret = (err_in_server != 0) ? EXIT_SUCCESS : EXIT_FAILURE;
   2212 
   2213     return ret;
   2214 }
   2215 #endif
   2216 
   2217 int doit_biopair(SSL *s_ssl, SSL *c_ssl, long count,
   2218                  clock_t *s_time, clock_t *c_time)
   2219 {
   2220     long cw_num = count, cr_num = count, sw_num = count, sr_num = count;
   2221     BIO *s_ssl_bio = NULL, *c_ssl_bio = NULL;
   2222     BIO *server = NULL, *server_io = NULL, *client = NULL, *client_io = NULL;
   2223     int ret = EXIT_FAILURE;
   2224     int err_in_client = 0;
   2225     int err_in_server = 0;
   2226 
   2227     size_t bufsiz = 256;        /* small buffer for testing */
   2228 
   2229     if (!BIO_new_bio_pair(&server, bufsiz, &server_io, bufsiz))
   2230         goto err;
   2231     if (!BIO_new_bio_pair(&client, bufsiz, &client_io, bufsiz))
   2232         goto err;
   2233 
   2234     s_ssl_bio = BIO_new(BIO_f_ssl());
   2235     if (!s_ssl_bio)
   2236         goto err;
   2237 
   2238     c_ssl_bio = BIO_new(BIO_f_ssl());
   2239     if (!c_ssl_bio)
   2240         goto err;
   2241 
   2242     SSL_set_connect_state(c_ssl);
   2243     SSL_set_bio(c_ssl, client, client);
   2244     (void)BIO_set_ssl(c_ssl_bio, c_ssl, BIO_NOCLOSE);
   2245 
   2246     SSL_set_accept_state(s_ssl);
   2247     SSL_set_bio(s_ssl, server, server);
   2248     (void)BIO_set_ssl(s_ssl_bio, s_ssl, BIO_NOCLOSE);
   2249 
   2250     do {
   2251         /*-
   2252          * c_ssl_bio:          SSL filter BIO
   2253          *
   2254          * client:             pseudo-I/O for SSL library
   2255          *
   2256          * client_io:          client's SSL communication; usually to be
   2257          *                     relayed over some I/O facility, but in this
   2258          *                     test program, we're the server, too:
   2259          *
   2260          * server_io:          server's SSL communication
   2261          *
   2262          * server:             pseudo-I/O for SSL library
   2263          *
   2264          * s_ssl_bio:          SSL filter BIO
   2265          *
   2266          * The client and the server each employ a "BIO pair":
   2267          * client + client_io, server + server_io.
   2268          * BIO pairs are symmetric.  A BIO pair behaves similar
   2269          * to a non-blocking socketpair (but both endpoints must
   2270          * be handled by the same thread).
   2271          * [Here we could connect client and server to the ends
   2272          * of a single BIO pair, but then this code would be less
   2273          * suitable as an example for BIO pairs in general.]
   2274          *
   2275          * Useful functions for querying the state of BIO pair endpoints:
   2276          *
   2277          * BIO_ctrl_pending(bio)              number of bytes we can read now
   2278          * BIO_ctrl_get_read_request(bio)     number of bytes needed to fulfill
   2279          *                                      other side's read attempt
   2280          * BIO_ctrl_get_write_guarantee(bio)   number of bytes we can write now
   2281          *
   2282          * ..._read_request is never more than ..._write_guarantee;
   2283          * it depends on the application which one you should use.
   2284          */
   2285 
   2286         /*
   2287          * We have non-blocking behaviour throughout this test program, but
   2288          * can be sure that there is *some* progress in each iteration; so we
   2289          * don't have to worry about ..._SHOULD_READ or ..._SHOULD_WRITE --
   2290          * we just try everything in each iteration
   2291          */
   2292 
   2293         {
   2294             /* CLIENT */
   2295 
   2296             char cbuf[1024 * 8];
   2297             int i, r;
   2298             clock_t c_clock = clock();
   2299 
   2300             memset(cbuf, 0, sizeof(cbuf));
   2301 
   2302             if (debug)
   2303                 if (SSL_in_init(c_ssl))
   2304                     printf("client waiting in SSL_connect - %s\n",
   2305                            SSL_state_string_long(c_ssl));
   2306 
   2307             if (cw_num > 0) {
   2308                 /* Write to server. */
   2309 
   2310                 if (cw_num > (long)sizeof(cbuf))
   2311                     i = sizeof(cbuf);
   2312                 else
   2313                     i = (int)cw_num;
   2314                 r = BIO_write(c_ssl_bio, cbuf, i);
   2315                 if (r < 0) {
   2316                     if (!BIO_should_retry(c_ssl_bio)) {
   2317                         fprintf(stderr, "ERROR in CLIENT\n");
   2318                         err_in_client = 1;
   2319                         goto err;
   2320                     }
   2321                     /*
   2322                      * BIO_should_retry(...) can just be ignored here. The
   2323                      * library expects us to call BIO_write with the same
   2324                      * arguments again, and that's what we will do in the
   2325                      * next iteration.
   2326                      */
   2327                 } else if (r == 0) {
   2328                     fprintf(stderr, "SSL CLIENT STARTUP FAILED\n");
   2329                     goto err;
   2330                 } else {
   2331                     if (debug)
   2332                         printf("client wrote %d\n", r);
   2333                     cw_num -= r;
   2334                 }
   2335             }
   2336 
   2337             if (cr_num > 0) {
   2338                 /* Read from server. */
   2339 
   2340                 r = BIO_read(c_ssl_bio, cbuf, sizeof(cbuf));
   2341                 if (r < 0) {
   2342                     if (!BIO_should_retry(c_ssl_bio)) {
   2343                         fprintf(stderr, "ERROR in CLIENT\n");
   2344                         err_in_client = 1;
   2345                         goto err;
   2346                     }
   2347                     /*
   2348                      * Again, "BIO_should_retry" can be ignored.
   2349                      */
   2350                 } else if (r == 0) {
   2351                     fprintf(stderr, "SSL CLIENT STARTUP FAILED\n");
   2352                     goto err;
   2353                 } else {
   2354                     if (debug)
   2355                         printf("client read %d\n", r);
   2356                     cr_num -= r;
   2357                 }
   2358             }
   2359 
   2360             /*
   2361              * c_time and s_time increments will typically be very small
   2362              * (depending on machine speed and clock tick intervals), but
   2363              * sampling over a large number of connections should result in
   2364              * fairly accurate figures.  We cannot guarantee a lot, however
   2365              * -- if each connection lasts for exactly one clock tick, it
   2366              * will be counted only for the client or only for the server or
   2367              * even not at all.
   2368              */
   2369             *c_time += (clock() - c_clock);
   2370         }
   2371 
   2372         {
   2373             /* SERVER */
   2374 
   2375             char sbuf[1024 * 8];
   2376             int i, r;
   2377             clock_t s_clock = clock();
   2378 
   2379             memset(sbuf, 0, sizeof(sbuf));
   2380 
   2381             if (debug)
   2382                 if (SSL_in_init(s_ssl))
   2383                     printf("server waiting in SSL_accept - %s\n",
   2384                            SSL_state_string_long(s_ssl));
   2385 
   2386             if (sw_num > 0) {
   2387                 /* Write to client. */
   2388 
   2389                 if (sw_num > (long)sizeof(sbuf))
   2390                     i = sizeof(sbuf);
   2391                 else
   2392                     i = (int)sw_num;
   2393                 r = BIO_write(s_ssl_bio, sbuf, i);
   2394                 if (r < 0) {
   2395                     if (!BIO_should_retry(s_ssl_bio)) {
   2396                         fprintf(stderr, "ERROR in SERVER\n");
   2397                         err_in_server = 1;
   2398                         goto err;
   2399                     }
   2400                     /* Ignore "BIO_should_retry". */
   2401                 } else if (r == 0) {
   2402                     fprintf(stderr, "SSL SERVER STARTUP FAILED\n");
   2403                     goto err;
   2404                 } else {
   2405                     if (debug)
   2406                         printf("server wrote %d\n", r);
   2407                     sw_num -= r;
   2408                 }
   2409             }
   2410 
   2411             if (sr_num > 0) {
   2412                 /* Read from client. */
   2413 
   2414                 r = BIO_read(s_ssl_bio, sbuf, sizeof(sbuf));
   2415                 if (r < 0) {
   2416                     if (!BIO_should_retry(s_ssl_bio)) {
   2417                         fprintf(stderr, "ERROR in SERVER\n");
   2418                         err_in_server = 1;
   2419                         goto err;
   2420                     }
   2421                     /* blah, blah */
   2422                 } else if (r == 0) {
   2423                     fprintf(stderr, "SSL SERVER STARTUP FAILED\n");
   2424                     goto err;
   2425                 } else {
   2426                     if (debug)
   2427                         printf("server read %d\n", r);
   2428                     sr_num -= r;
   2429                 }
   2430             }
   2431 
   2432             *s_time += (clock() - s_clock);
   2433         }
   2434 
   2435         {
   2436             /* "I/O" BETWEEN CLIENT AND SERVER. */
   2437 
   2438             size_t r1, r2;
   2439             BIO *io1 = server_io, *io2 = client_io;
   2440             /*
   2441              * we use the non-copying interface for io1 and the standard
   2442              * BIO_write/BIO_read interface for io2
   2443              */
   2444 
   2445             static int prev_progress = 1;
   2446             int progress = 0;
   2447 
   2448             /* io1 to io2 */
   2449             do {
   2450                 size_t num;
   2451                 int r;
   2452 
   2453                 r1 = BIO_ctrl_pending(io1);
   2454                 r2 = BIO_ctrl_get_write_guarantee(io2);
   2455 
   2456                 num = r1;
   2457                 if (r2 < num)
   2458                     num = r2;
   2459                 if (num) {
   2460                     char *dataptr;
   2461 
   2462                     if (INT_MAX < num) /* yeah, right */
   2463                         num = INT_MAX;
   2464 
   2465                     r = BIO_nread(io1, &dataptr, (int)num);
   2466                     assert(r > 0);
   2467                     assert(r <= (int)num);
   2468                     /*
   2469                      * possibly r < num (non-contiguous data)
   2470                      */
   2471                     num = r;
   2472                     r = BIO_write(io2, dataptr, (int)num);
   2473                     if (r != (int)num) { /* can't happen */
   2474                         fprintf(stderr, "ERROR: BIO_write could not write "
   2475                                 "BIO_ctrl_get_write_guarantee() bytes");
   2476                         goto err;
   2477                     }
   2478                     progress = 1;
   2479 
   2480                     if (debug)
   2481                         printf((io1 == client_io) ?
   2482                                "C->S relaying: %d bytes\n" :
   2483                                "S->C relaying: %d bytes\n", (int)num);
   2484                 }
   2485             }
   2486             while (r1 && r2);
   2487 
   2488             /* io2 to io1 */
   2489             {
   2490                 size_t num;
   2491                 int r;
   2492 
   2493                 r1 = BIO_ctrl_pending(io2);
   2494                 r2 = BIO_ctrl_get_read_request(io1);
   2495                 /*
   2496                  * here we could use ..._get_write_guarantee instead of
   2497                  * ..._get_read_request, but by using the latter we test
   2498                  * restartability of the SSL implementation more thoroughly
   2499                  */
   2500                 num = r1;
   2501                 if (r2 < num)
   2502                     num = r2;
   2503                 if (num) {
   2504                     char *dataptr;
   2505 
   2506                     if (INT_MAX < num)
   2507                         num = INT_MAX;
   2508 
   2509                     if (num > 1)
   2510                         --num;  /* test restartability even more thoroughly */
   2511 
   2512                     r = BIO_nwrite0(io1, &dataptr);
   2513                     assert(r > 0);
   2514                     if (r < (int)num)
   2515                         num = r;
   2516                     r = BIO_read(io2, dataptr, (int)num);
   2517                     if (r != (int)num) { /* can't happen */
   2518                         fprintf(stderr, "ERROR: BIO_read could not read "
   2519                                 "BIO_ctrl_pending() bytes");
   2520                         goto err;
   2521                     }
   2522                     progress = 1;
   2523                     r = BIO_nwrite(io1, &dataptr, (int)num);
   2524                     if (r != (int)num) { /* can't happen */
   2525                         fprintf(stderr, "ERROR: BIO_nwrite() did not accept "
   2526                                 "BIO_nwrite0() bytes");
   2527                         goto err;
   2528                     }
   2529 
   2530                     if (debug)
   2531                         printf((io2 == client_io) ?
   2532                                "C->S relaying: %d bytes\n" :
   2533                                "S->C relaying: %d bytes\n", (int)num);
   2534                 }
   2535             }                   /* no loop, BIO_ctrl_get_read_request now
   2536                                  * returns 0 anyway */
   2537 
   2538             if (!progress && !prev_progress)
   2539                 if (cw_num > 0 || cr_num > 0 || sw_num > 0 || sr_num > 0) {
   2540                     fprintf(stderr, "ERROR: got stuck\n");
   2541                     fprintf(stderr, " ERROR.\n");
   2542                     goto err;
   2543                 }
   2544             prev_progress = progress;
   2545         }
   2546     }
   2547     while (cw_num > 0 || cr_num > 0 || sw_num > 0 || sr_num > 0);
   2548 
   2549     if (verbose)
   2550         print_details(c_ssl, "DONE via BIO pair: ");
   2551 #ifndef OPENSSL_NO_NEXTPROTONEG
   2552     if (verify_npn(c_ssl, s_ssl) < 0)
   2553         goto end;
   2554 #endif
   2555     if (verify_serverinfo() < 0) {
   2556         fprintf(stderr, "Server info verify error\n");
   2557         goto err;
   2558     }
   2559     if (verify_alpn(c_ssl, s_ssl) < 0
   2560             || verify_servername(c_ssl, s_ssl) < 0)
   2561         goto err;
   2562 
   2563     if (custom_ext_error) {
   2564         fprintf(stderr, "Custom extension error\n");
   2565         goto err;
   2566     }
   2567 
   2568 #ifndef OPENSSL_NO_NEXTPROTONEG
   2569  end:
   2570 #endif
   2571     ret = EXIT_SUCCESS;
   2572 
   2573  err:
   2574     ERR_print_errors(bio_err);
   2575 
   2576     BIO_free(server);
   2577     BIO_free(server_io);
   2578     BIO_free(client);
   2579     BIO_free(client_io);
   2580     BIO_free(s_ssl_bio);
   2581     BIO_free(c_ssl_bio);
   2582 
   2583     if (should_negotiate != NULL && strcmp(should_negotiate, "fail-client") == 0)
   2584         ret = (err_in_client != 0) ? EXIT_SUCCESS : EXIT_FAILURE;
   2585     else if (should_negotiate != NULL && strcmp(should_negotiate, "fail-server") == 0)
   2586         ret = (err_in_server != 0) ? EXIT_SUCCESS : EXIT_FAILURE;
   2587 
   2588     return ret;
   2589 }
   2590 
   2591 #define W_READ  1
   2592 #define W_WRITE 2
   2593 #define C_DONE  1
   2594 #define S_DONE  2
   2595 
   2596 int doit(SSL *s_ssl, SSL *c_ssl, long count)
   2597 {
   2598     char *cbuf = NULL, *sbuf = NULL;
   2599     long bufsiz;
   2600     long cw_num = count, cr_num = count;
   2601     long sw_num = count, sr_num = count;
   2602     int ret = EXIT_FAILURE;
   2603     BIO *c_to_s = NULL;
   2604     BIO *s_to_c = NULL;
   2605     BIO *c_bio = NULL;
   2606     BIO *s_bio = NULL;
   2607     int c_r, c_w, s_r, s_w;
   2608     int i, j;
   2609     int done = 0;
   2610     int c_write, s_write;
   2611     int do_server = 0, do_client = 0;
   2612     int max_frag = 5 * 1024;
   2613     int err_in_client = 0;
   2614     int err_in_server = 0;
   2615 
   2616     bufsiz = count > 40 * 1024 ? 40 * 1024 : count;
   2617 
   2618     if ((cbuf = OPENSSL_zalloc(bufsiz)) == NULL)
   2619         goto err;
   2620     if ((sbuf = OPENSSL_zalloc(bufsiz)) == NULL)
   2621         goto err;
   2622 
   2623     c_to_s = BIO_new(BIO_s_mem());
   2624     s_to_c = BIO_new(BIO_s_mem());
   2625     if ((s_to_c == NULL) || (c_to_s == NULL)) {
   2626         ERR_print_errors(bio_err);
   2627         goto err;
   2628     }
   2629 
   2630     c_bio = BIO_new(BIO_f_ssl());
   2631     s_bio = BIO_new(BIO_f_ssl());
   2632     if ((c_bio == NULL) || (s_bio == NULL)) {
   2633         ERR_print_errors(bio_err);
   2634         goto err;
   2635     }
   2636 
   2637     SSL_set_connect_state(c_ssl);
   2638     SSL_set_bio(c_ssl, s_to_c, c_to_s);
   2639     SSL_set_max_send_fragment(c_ssl, max_frag);
   2640     BIO_set_ssl(c_bio, c_ssl, BIO_NOCLOSE);
   2641 
   2642     /*
   2643      * We've just given our ref to these BIOs to c_ssl. We need another one to
   2644      * give to s_ssl
   2645      */
   2646     if (!BIO_up_ref(c_to_s)) {
   2647         /* c_to_s and s_to_c will get freed when we free c_ssl */
   2648         c_to_s = NULL;
   2649         s_to_c = NULL;
   2650         goto err;
   2651     }
   2652     if (!BIO_up_ref(s_to_c)) {
   2653         /* s_to_c will get freed when we free c_ssl */
   2654         s_to_c = NULL;
   2655         goto err;
   2656     }
   2657 
   2658     SSL_set_accept_state(s_ssl);
   2659     SSL_set_bio(s_ssl, c_to_s, s_to_c);
   2660 
   2661     /* We've used up all our refs to these now */
   2662     c_to_s = NULL;
   2663     s_to_c = NULL;
   2664 
   2665     SSL_set_max_send_fragment(s_ssl, max_frag);
   2666     BIO_set_ssl(s_bio, s_ssl, BIO_NOCLOSE);
   2667 
   2668     c_r = 0;
   2669     s_r = 1;
   2670     c_w = 1;
   2671     s_w = 0;
   2672     c_write = 1, s_write = 0;
   2673 
   2674     /* We can always do writes */
   2675     for (;;) {
   2676         do_server = 0;
   2677         do_client = 0;
   2678 
   2679         i = (int)BIO_pending(s_bio);
   2680         if ((i && s_r) || s_w)
   2681             do_server = 1;
   2682 
   2683         i = (int)BIO_pending(c_bio);
   2684         if ((i && c_r) || c_w)
   2685             do_client = 1;
   2686 
   2687         if (do_server && debug) {
   2688             if (SSL_in_init(s_ssl))
   2689                 printf("server waiting in SSL_accept - %s\n",
   2690                        SSL_state_string_long(s_ssl));
   2691         }
   2692 
   2693         if (do_client && debug) {
   2694             if (SSL_in_init(c_ssl))
   2695                 printf("client waiting in SSL_connect - %s\n",
   2696                        SSL_state_string_long(c_ssl));
   2697         }
   2698 
   2699         if (!do_client && !do_server) {
   2700             fprintf(stdout, "ERROR IN STARTUP\n");
   2701             ERR_print_errors(bio_err);
   2702             goto err;
   2703         }
   2704         if (do_client && !(done & C_DONE)) {
   2705             if (c_write) {
   2706                 j = (cw_num > bufsiz) ? (int)bufsiz : (int)cw_num;
   2707                 i = BIO_write(c_bio, cbuf, j);
   2708                 if (i < 0) {
   2709                     c_r = 0;
   2710                     c_w = 0;
   2711                     if (BIO_should_retry(c_bio)) {
   2712                         if (BIO_should_read(c_bio))
   2713                             c_r = 1;
   2714                         if (BIO_should_write(c_bio))
   2715                             c_w = 1;
   2716                     } else {
   2717                         fprintf(stderr, "ERROR in CLIENT\n");
   2718                         err_in_client = 1;
   2719                         ERR_print_errors(bio_err);
   2720                         goto err;
   2721                     }
   2722                 } else if (i == 0) {
   2723                     fprintf(stderr, "SSL CLIENT STARTUP FAILED\n");
   2724                     goto err;
   2725                 } else {
   2726                     if (debug)
   2727                         printf("client wrote %d\n", i);
   2728                     /* ok */
   2729                     s_r = 1;
   2730                     c_write = 0;
   2731                     cw_num -= i;
   2732                     if (max_frag > 1029)
   2733                         SSL_set_max_send_fragment(c_ssl, max_frag -= 5);
   2734                 }
   2735             } else {
   2736                 i = BIO_read(c_bio, cbuf, bufsiz);
   2737                 if (i < 0) {
   2738                     c_r = 0;
   2739                     c_w = 0;
   2740                     if (BIO_should_retry(c_bio)) {
   2741                         if (BIO_should_read(c_bio))
   2742                             c_r = 1;
   2743                         if (BIO_should_write(c_bio))
   2744                             c_w = 1;
   2745                     } else {
   2746                         fprintf(stderr, "ERROR in CLIENT\n");
   2747                         err_in_client = 1;
   2748                         ERR_print_errors(bio_err);
   2749                         goto err;
   2750                     }
   2751                 } else if (i == 0) {
   2752                     fprintf(stderr, "SSL CLIENT STARTUP FAILED\n");
   2753                     goto err;
   2754                 } else {
   2755                     if (debug)
   2756                         printf("client read %d\n", i);
   2757                     cr_num -= i;
   2758                     if (sw_num > 0) {
   2759                         s_write = 1;
   2760                         s_w = 1;
   2761                     }
   2762                     if (cr_num <= 0) {
   2763                         s_write = 1;
   2764                         s_w = 1;
   2765                         done = S_DONE | C_DONE;
   2766                     }
   2767                 }
   2768             }
   2769         }
   2770 
   2771         if (do_server && !(done & S_DONE)) {
   2772             if (!s_write) {
   2773                 i = BIO_read(s_bio, sbuf, bufsiz);
   2774                 if (i < 0) {
   2775                     s_r = 0;
   2776                     s_w = 0;
   2777                     if (BIO_should_retry(s_bio)) {
   2778                         if (BIO_should_read(s_bio))
   2779                             s_r = 1;
   2780                         if (BIO_should_write(s_bio))
   2781                             s_w = 1;
   2782                     } else {
   2783                         fprintf(stderr, "ERROR in SERVER\n");
   2784                         err_in_server = 1;
   2785                         ERR_print_errors(bio_err);
   2786                         goto err;
   2787                     }
   2788                 } else if (i == 0) {
   2789                     ERR_print_errors(bio_err);
   2790                     fprintf(stderr,
   2791                             "SSL SERVER STARTUP FAILED in SSL_read\n");
   2792                     goto err;
   2793                 } else {
   2794                     if (debug)
   2795                         printf("server read %d\n", i);
   2796                     sr_num -= i;
   2797                     if (cw_num > 0) {
   2798                         c_write = 1;
   2799                         c_w = 1;
   2800                     }
   2801                     if (sr_num <= 0) {
   2802                         s_write = 1;
   2803                         s_w = 1;
   2804                         c_write = 0;
   2805                     }
   2806                 }
   2807             } else {
   2808                 j = (sw_num > bufsiz) ? (int)bufsiz : (int)sw_num;
   2809                 i = BIO_write(s_bio, sbuf, j);
   2810                 if (i < 0) {
   2811                     s_r = 0;
   2812                     s_w = 0;
   2813                     if (BIO_should_retry(s_bio)) {
   2814                         if (BIO_should_read(s_bio))
   2815                             s_r = 1;
   2816                         if (BIO_should_write(s_bio))
   2817                             s_w = 1;
   2818                     } else {
   2819                         fprintf(stderr, "ERROR in SERVER\n");
   2820                         err_in_server = 1;
   2821                         ERR_print_errors(bio_err);
   2822                         goto err;
   2823                     }
   2824                 } else if (i == 0) {
   2825                     ERR_print_errors(bio_err);
   2826                     fprintf(stderr,
   2827                             "SSL SERVER STARTUP FAILED in SSL_write\n");
   2828                     goto err;
   2829                 } else {
   2830                     if (debug)
   2831                         printf("server wrote %d\n", i);
   2832                     sw_num -= i;
   2833                     s_write = 0;
   2834                     c_r = 1;
   2835                     if (sw_num <= 0)
   2836                         done |= S_DONE;
   2837                     if (max_frag > 1029)
   2838                         SSL_set_max_send_fragment(s_ssl, max_frag -= 5);
   2839                 }
   2840             }
   2841         }
   2842 
   2843         if ((done & S_DONE) && (done & C_DONE))
   2844             break;
   2845     }
   2846 
   2847     if (verbose)
   2848         print_details(c_ssl, "DONE: ");
   2849 #ifndef OPENSSL_NO_NEXTPROTONEG
   2850     if (verify_npn(c_ssl, s_ssl) < 0)
   2851         goto err;
   2852 #endif
   2853     if (verify_serverinfo() < 0) {
   2854         fprintf(stderr, "Server info verify error\n");
   2855         goto err;
   2856     }
   2857     if (custom_ext_error) {
   2858         fprintf(stderr, "Custom extension error\n");
   2859         goto err;
   2860     }
   2861     ret = EXIT_SUCCESS;
   2862  err:
   2863     BIO_free(c_to_s);
   2864     BIO_free(s_to_c);
   2865     BIO_free_all(c_bio);
   2866     BIO_free_all(s_bio);
   2867     OPENSSL_free(cbuf);
   2868     OPENSSL_free(sbuf);
   2869 
   2870     if (should_negotiate != NULL && strcmp(should_negotiate, "fail-client") == 0)
   2871         ret = (err_in_client != 0) ? EXIT_SUCCESS : EXIT_FAILURE;
   2872     else if (should_negotiate != NULL && strcmp(should_negotiate, "fail-server") == 0)
   2873         ret = (err_in_server != 0) ? EXIT_SUCCESS : EXIT_FAILURE;
   2874 
   2875     return ret;
   2876 }
   2877 
   2878 static int verify_callback(int ok, X509_STORE_CTX *ctx)
   2879 {
   2880     char *s, buf[256];
   2881 
   2882     s = X509_NAME_oneline(X509_get_subject_name(X509_STORE_CTX_get_current_cert(ctx)),
   2883                           buf, sizeof(buf));
   2884     if (s != NULL) {
   2885         if (ok)
   2886             printf("depth=%d %s\n", X509_STORE_CTX_get_error_depth(ctx), buf);
   2887         else {
   2888             fprintf(stderr, "depth=%d error=%d %s\n",
   2889                     X509_STORE_CTX_get_error_depth(ctx),
   2890                     X509_STORE_CTX_get_error(ctx), buf);
   2891         }
   2892     }
   2893 
   2894     if (ok == 0) {
   2895         int i = X509_STORE_CTX_get_error(ctx);
   2896 
   2897         switch (i) {
   2898         default:
   2899             fprintf(stderr, "Error string: %s\n",
   2900                     X509_verify_cert_error_string(i));
   2901             break;
   2902         case X509_V_ERR_CERT_NOT_YET_VALID:
   2903         case X509_V_ERR_CERT_HAS_EXPIRED:
   2904         case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
   2905             ok = 1;
   2906             break;
   2907         }
   2908     }
   2909 
   2910     return ok;
   2911 }
   2912 
   2913 static int app_verify_callback(X509_STORE_CTX *ctx, void *arg)
   2914 {
   2915     int ok = 1;
   2916     struct app_verify_arg *cb_arg = arg;
   2917 
   2918     if (cb_arg->app_verify) {
   2919         char *s = NULL, buf[256];
   2920         X509 *c = X509_STORE_CTX_get0_cert(ctx);
   2921 
   2922         printf("In app_verify_callback, allowing cert. ");
   2923         printf("Arg is: %s\n", cb_arg->string);
   2924         printf("Finished printing do we have a context? 0x%p a cert? 0x%p\n",
   2925                 (void *)ctx, (void *)c);
   2926         if (c)
   2927             s = X509_NAME_oneline(X509_get_subject_name(c), buf, 256);
   2928         if (s != NULL) {
   2929             printf("cert depth=%d %s\n",
   2930                     X509_STORE_CTX_get_error_depth(ctx), buf);
   2931         }
   2932         return 1;
   2933     }
   2934 
   2935     ok = X509_verify_cert(ctx);
   2936 
   2937     return ok;
   2938 }
   2939 
   2940 #ifndef OPENSSL_NO_PSK
   2941 /* convert the PSK key (psk_key) in ascii to binary (psk) */
   2942 static int psk_key2bn(const char *pskkey, unsigned char *psk,
   2943                       unsigned int max_psk_len)
   2944 {
   2945     int ret;
   2946     BIGNUM *bn = NULL;
   2947 
   2948     ret = BN_hex2bn(&bn, pskkey);
   2949     if (!ret) {
   2950         BIO_printf(bio_err, "Could not convert PSK key '%s' to BIGNUM\n",
   2951                    pskkey);
   2952         BN_free(bn);
   2953         return 0;
   2954     }
   2955     if (BN_num_bytes(bn) > (int)max_psk_len) {
   2956         BIO_printf(bio_err,
   2957                    "psk buffer of callback is too small (%d) for key (%d)\n",
   2958                    max_psk_len, BN_num_bytes(bn));
   2959         BN_free(bn);
   2960         return 0;
   2961     }
   2962     ret = BN_bn2bin(bn, psk);
   2963     BN_free(bn);
   2964     return ret;
   2965 }
   2966 
   2967 static unsigned int psk_client_callback(SSL *ssl, const char *hint,
   2968                                         char *identity,
   2969                                         unsigned int max_identity_len,
   2970                                         unsigned char *psk,
   2971                                         unsigned int max_psk_len)
   2972 {
   2973     int ret;
   2974     unsigned int psk_len = 0;
   2975 
   2976     ret = BIO_snprintf(identity, max_identity_len, "Client_identity");
   2977     if (ret < 0)
   2978         goto out_err;
   2979     if (debug)
   2980         fprintf(stderr, "client: created identity '%s' len=%d\n", identity,
   2981                 ret);
   2982     ret = psk_key2bn(psk_key, psk, max_psk_len);
   2983     if (ret < 0)
   2984         goto out_err;
   2985     psk_len = ret;
   2986  out_err:
   2987     return psk_len;
   2988 }
   2989 
   2990 static unsigned int psk_server_callback(SSL *ssl, const char *identity,
   2991                                         unsigned char *psk,
   2992                                         unsigned int max_psk_len)
   2993 {
   2994     unsigned int psk_len = 0;
   2995 
   2996     if (strcmp(identity, "Client_identity") != 0) {
   2997         BIO_printf(bio_err, "server: PSK error: client identity not found\n");
   2998         return 0;
   2999     }
   3000     psk_len = psk_key2bn(psk_key, psk, max_psk_len);
   3001     return psk_len;
   3002 }
   3003 #endif
   3004