1 /*
2  *  SSL client with certificate authentication
3  *
4  *  Copyright The Mbed TLS Contributors
5  *  SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
6  */
7 
8 #define MBEDTLS_ALLOW_PRIVATE_ACCESS
9 
10 #include "ssl_test_lib.h"
11 
12 #if defined(MBEDTLS_USE_PSA_CRYPTO) || defined(MBEDTLS_SSL_PROTO_TLS1_3)
13 #include "test/psa_crypto_helpers.h"
14 #endif /* MBEDTLS_USE_PSA_CRYPTO || MBEDTLS_SSL_PROTO_TLS1_3 */
15 
16 #if defined(MBEDTLS_SSL_TEST_IMPOSSIBLE)
main(void)17 int main(void)
18 {
19     mbedtls_printf(MBEDTLS_SSL_TEST_IMPOSSIBLE);
20     mbedtls_exit(0);
21 }
22 #elif !defined(MBEDTLS_SSL_CLI_C)
main(void)23 int main(void)
24 {
25     mbedtls_printf("MBEDTLS_SSL_CLI_C not defined.\n");
26     mbedtls_exit(0);
27 }
28 #else /* !MBEDTLS_SSL_TEST_IMPOSSIBLE && MBEDTLS_SSL_CLI_C */
29 
30 /* Size of memory to be allocated for the heap, when using the library's memory
31  * management and MBEDTLS_MEMORY_BUFFER_ALLOC_C is enabled. */
32 #define MEMORY_HEAP_SIZE      120000
33 
34 #define MAX_REQUEST_SIZE      20000
35 #define MAX_REQUEST_SIZE_STR "20000"
36 
37 #define DFL_SERVER_NAME         "localhost"
38 #define DFL_SERVER_ADDR         NULL
39 #define DFL_SERVER_PORT         "4433"
40 #define DFL_REQUEST_PAGE        "/"
41 #define DFL_REQUEST_SIZE        -1
42 #define DFL_DEBUG_LEVEL         0
43 #define DFL_CONTEXT_CRT_CB      0
44 #define DFL_NBIO                0
45 #define DFL_EVENT               0
46 #define DFL_READ_TIMEOUT        0
47 #define DFL_MAX_RESEND          0
48 #define DFL_CA_FILE             ""
49 #define DFL_CA_PATH             ""
50 #define DFL_CRT_FILE            ""
51 #define DFL_KEY_FILE            ""
52 #define DFL_KEY_OPAQUE          0
53 #define DFL_KEY_PWD             ""
54 #define DFL_PSK                 ""
55 #define DFL_EARLY_DATA          -1
56 #define DFL_PSK_OPAQUE          0
57 #define DFL_PSK_IDENTITY        "Client_identity"
58 #define DFL_ECJPAKE_PW          NULL
59 #define DFL_ECJPAKE_PW_OPAQUE   0
60 #define DFL_EC_MAX_OPS          -1
61 #define DFL_FORCE_CIPHER        0
62 #define DFL_TLS1_3_KEX_MODES    MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_ALL
63 #define DFL_RENEGOTIATION       MBEDTLS_SSL_RENEGOTIATION_DISABLED
64 #define DFL_ALLOW_LEGACY        -2
65 #define DFL_RENEGOTIATE         0
66 #define DFL_EXCHANGES           1
67 #define DFL_MIN_VERSION         -1
68 #define DFL_MAX_VERSION         -1
69 #define DFL_SHA1                -1
70 #define DFL_AUTH_MODE           -1
71 #define DFL_MFL_CODE            MBEDTLS_SSL_MAX_FRAG_LEN_NONE
72 #define DFL_TRUNC_HMAC          -1
73 #define DFL_RECSPLIT            -1
74 #define DFL_DHMLEN              -1
75 #define DFL_RECONNECT           0
76 #define DFL_RECO_SERVER_NAME    NULL
77 #define DFL_RECO_DELAY          0
78 #define DFL_RECO_MODE           1
79 #define DFL_CID_ENABLED         0
80 #define DFL_CID_VALUE           ""
81 #define DFL_CID_ENABLED_RENEGO  -1
82 #define DFL_CID_VALUE_RENEGO    NULL
83 #define DFL_RECONNECT_HARD      0
84 #define DFL_TICKETS             MBEDTLS_SSL_SESSION_TICKETS_ENABLED
85 #define DFL_ALPN_STRING         NULL
86 #define DFL_GROUPS              NULL
87 #define DFL_SIG_ALGS            NULL
88 #define DFL_TRANSPORT           MBEDTLS_SSL_TRANSPORT_STREAM
89 #define DFL_HS_TO_MIN           0
90 #define DFL_HS_TO_MAX           0
91 #define DFL_DTLS_MTU            -1
92 #define DFL_DGRAM_PACKING        1
93 #define DFL_FALLBACK            -1
94 #define DFL_EXTENDED_MS         -1
95 #define DFL_ETM                 -1
96 #define DFL_SERIALIZE           0
97 #define DFL_CONTEXT_FILE        ""
98 #define DFL_EXTENDED_MS_ENFORCE -1
99 #define DFL_CA_CALLBACK         0
100 #define DFL_EAP_TLS             0
101 #define DFL_REPRODUCIBLE        0
102 #define DFL_NSS_KEYLOG          0
103 #define DFL_NSS_KEYLOG_FILE     NULL
104 #define DFL_SKIP_CLOSE_NOTIFY   0
105 #define DFL_QUERY_CONFIG_MODE   0
106 #define DFL_USE_SRTP            0
107 #define DFL_SRTP_FORCE_PROFILE  0
108 #define DFL_SRTP_MKI            ""
109 #define DFL_KEY_OPAQUE_ALG      "none"
110 
111 #define GET_REQUEST "GET %s HTTP/1.0\r\nExtra-header: "
112 #define GET_REQUEST_END "\r\n\r\n"
113 
114 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
115 #define USAGE_CONTEXT_CRT_CB \
116     "    context_crt_cb=%%d   This determines whether the CRT verification callback is bound\n" \
117     "                        to the SSL configuration of the SSL context.\n" \
118     "                        Possible values:\n" \
119     "                        - 0 (default): Use CRT callback bound to configuration\n" \
120     "                        - 1: Use CRT callback bound to SSL context\n"
121 #else
122 #define USAGE_CONTEXT_CRT_CB ""
123 #endif /* MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED */
124 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
125 #if defined(MBEDTLS_FS_IO)
126 #define USAGE_IO \
127     "    ca_file=%%s          The single file containing the top-level CA(s) you fully trust\n" \
128     "                        default: \"\" (pre-loaded)\n" \
129     "                        use \"none\" to skip loading any top-level CAs.\n" \
130     "    ca_path=%%s          The path containing the top-level CA(s) you fully trust\n" \
131     "                        default: \"\" (pre-loaded) (overrides ca_file)\n" \
132     "                        use \"none\" to skip loading any top-level CAs.\n" \
133     "    crt_file=%%s         Your own cert and chain (in bottom to top order, top may be omitted)\n" \
134     "                        default: \"\" (pre-loaded)\n" \
135     "    key_file=%%s         default: \"\" (pre-loaded)\n" \
136     "    key_pwd=%%s          Password for key specified by key_file argument\n" \
137     "                        default: none\n"
138 #else
139 #define USAGE_IO \
140     "    No file operations available (MBEDTLS_FS_IO not defined)\n"
141 #endif /* MBEDTLS_FS_IO */
142 #else /* MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED */
143 #define USAGE_IO ""
144 #endif /* MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED */
145 #if defined(MBEDTLS_USE_PSA_CRYPTO) && defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
146 #define USAGE_KEY_OPAQUE \
147     "    key_opaque=%%d       Handle your private key as if it were opaque\n" \
148     "                        default: 0 (disabled)\n"
149 #else
150 #define USAGE_KEY_OPAQUE ""
151 #endif
152 
153 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
154 #define USAGE_CID \
155     "    cid=%%d             Disable (0) or enable (1) the use of the DTLS Connection ID extension.\n" \
156     "                       default: 0 (disabled)\n"     \
157     "    cid_renego=%%d      Disable (0) or enable (1) the use of the DTLS Connection ID extension during renegotiation.\n" \
158     "                       default: same as 'cid' parameter\n"     \
159     "    cid_val=%%s          The CID to use for incoming messages (in hex, without 0x).\n"  \
160     "                        default: \"\"\n" \
161     "    cid_val_renego=%%s   The CID to use for incoming messages (in hex, without 0x) after renegotiation.\n"  \
162     "                        default: same as 'cid_val' parameter\n"
163 #else /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
164 #define USAGE_CID ""
165 #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
166 
167 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_PSK_ENABLED)
168 #define USAGE_PSK_RAW                                               \
169     "    psk=%%s              default: \"\" (disabled)\n"     \
170     "                          The PSK values are in hex, without 0x.\n" \
171     "    psk_identity=%%s     default: \"Client_identity\"\n"
172 #if defined(MBEDTLS_USE_PSA_CRYPTO)
173 #define USAGE_PSK_SLOT                          \
174     "    psk_opaque=%%d       default: 0 (don't use opaque static PSK)\n"     \
175     "                          Enable this to store the PSK configured through command line\n" \
176     "                          parameter `psk` in a PSA-based key slot.\n" \
177     "                          Note: Currently only supported in conjunction with\n"                  \
178     "                          the use of min_version to force TLS 1.2 and force_ciphersuite \n"      \
179     "                          to force a particular PSK-only ciphersuite.\n"                         \
180     "                          Note: This is to test integration of PSA-based opaque PSKs with\n"     \
181     "                          Mbed TLS only. Production systems are likely to configure Mbed TLS\n"  \
182     "                          with prepopulated key slots instead of importing raw key material.\n"
183 #else
184 #define USAGE_PSK_SLOT ""
185 #endif /* MBEDTLS_USE_PSA_CRYPTO */
186 #define USAGE_PSK USAGE_PSK_RAW USAGE_PSK_SLOT
187 #else
188 #define USAGE_PSK ""
189 #endif /* MBEDTLS_SSL_HANDSHAKE_WITH_PSK_ENABLED */
190 
191 #if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
192 #define USAGE_CA_CALLBACK                       \
193     "   ca_callback=%%d       default: 0 (disabled)\n"      \
194     "                         Enable this to use the trusted certificate callback function\n"
195 #else
196 #define USAGE_CA_CALLBACK ""
197 #endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */
198 
199 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
200 #define USAGE_TICKETS                                       \
201     "    tickets=%%d          default: 1 (enabled)\n"
202 #else
203 #define USAGE_TICKETS ""
204 #endif /* MBEDTLS_SSL_SESSION_TICKETS */
205 
206 #define USAGE_EAP_TLS                                       \
207     "    eap_tls=%%d          default: 0 (disabled)\n"
208 #define USAGE_NSS_KEYLOG                                    \
209     "    nss_keylog=%%d          default: 0 (disabled)\n"               \
210     "                             This cannot be used with eap_tls=1\n"
211 #define USAGE_NSS_KEYLOG_FILE                               \
212     "    nss_keylog_file=%%s\n"
213 #if defined(MBEDTLS_SSL_DTLS_SRTP)
214 #define USAGE_SRTP \
215     "    use_srtp=%%d         default: 0 (disabled)\n" \
216     "                          This cannot be used with eap_tls=1 or " \
217     "                          nss_keylog=1\n"             \
218     "    srtp_force_profile=%%d  default: 0 (all enabled)\n"   \
219     "                        available profiles:\n"       \
220     "                        1 - SRTP_AES128_CM_HMAC_SHA1_80\n"  \
221     "                        2 - SRTP_AES128_CM_HMAC_SHA1_32\n"  \
222     "                        3 - SRTP_NULL_HMAC_SHA1_80\n"       \
223     "                        4 - SRTP_NULL_HMAC_SHA1_32\n"       \
224     "    mki=%%s              default: \"\" (in hex, without 0x)\n"
225 #else /* MBEDTLS_SSL_DTLS_SRTP */
226 #define USAGE_SRTP ""
227 #endif
228 
229 #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
230 #define USAGE_MAX_FRAG_LEN                                      \
231     "    max_frag_len=%%d     default: 16384 (tls default)\n"   \
232     "                        options: 512, 1024, 2048, 4096\n"
233 #else
234 #define USAGE_MAX_FRAG_LEN ""
235 #endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */
236 
237 #if defined(MBEDTLS_DHM_C)
238 #define USAGE_DHMLEN \
239     "    dhmlen=%%d           default: (library default: 1024 bits)\n"
240 #else
241 #define USAGE_DHMLEN
242 #endif
243 
244 #if defined(MBEDTLS_SSL_ALPN)
245 #define USAGE_ALPN \
246     "    alpn=%%s             default: \"\" (disabled)\n"   \
247     "                        example: spdy/1,http/1.1\n"
248 #else
249 #define USAGE_ALPN ""
250 #endif /* MBEDTLS_SSL_ALPN */
251 
252 #if defined(MBEDTLS_PK_HAVE_ECC_KEYS) || \
253     (defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_EPHEMERAL_ENABLED) && \
254     defined(PSA_WANT_ALG_FFDH))
255 #define USAGE_GROUPS \
256     "    groups=a,b,c,d      default: \"default\" (library default)\n"        \
257     "                        example: \"secp521r1,brainpoolP512r1\"\n"        \
258     "                        - use \"none\" for empty list\n"                 \
259     "                        - see mbedtls_ecp_curve_list()\n"                \
260     "                          for acceptable EC group names\n"               \
261     "                        - the following ffdh groups are supported:\n"    \
262     "                          ffdhe2048, ffdhe3072, ffdhe4096, ffdhe6144,\n" \
263     "                          ffdhe8192\n"
264 #else
265 #define USAGE_GROUPS ""
266 #endif
267 
268 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
269 #define USAGE_SIG_ALGS \
270     "    sig_algs=a,b,c,d      default: \"default\" (library default)\n"  \
271     "                          example: \"ecdsa_secp256r1_sha256,ecdsa_secp384r1_sha384\"\n"
272 #else
273 #define USAGE_SIG_ALGS ""
274 #endif
275 
276 #if defined(MBEDTLS_SSL_PROTO_DTLS)
277 #define USAGE_DTLS \
278     "    dtls=%%d             default: 0 (TLS)\n"                           \
279     "    hs_timeout=%%d-%%d    default: (library default: 1000-60000)\n"    \
280     "                        range of DTLS handshake timeouts in millisecs\n" \
281     "    mtu=%%d              default: (library default: unlimited)\n"  \
282     "    dgram_packing=%%d    default: 1 (allowed)\n"                   \
283     "                        allow or forbid packing of multiple\n" \
284     "                        records within a single datgram.\n"
285 #else
286 #define USAGE_DTLS ""
287 #endif
288 
289 #if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
290 #define USAGE_EMS \
291     "    extended_ms=0/1     default: (library default: on)\n"
292 #else
293 #define USAGE_EMS ""
294 #endif
295 
296 #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
297 #define USAGE_ETM \
298     "    etm=0/1             default: (library default: on)\n"
299 #else
300 #define USAGE_ETM ""
301 #endif
302 
303 #define USAGE_REPRODUCIBLE \
304     "    reproducible=0/1     default: 0 (disabled)\n"
305 
306 #if defined(MBEDTLS_SSL_RENEGOTIATION)
307 #define USAGE_RENEGO \
308     "    renegotiation=%%d    default: 0 (disabled)\n"      \
309     "    renegotiate=%%d      default: 0 (disabled)\n"
310 #else
311 #define USAGE_RENEGO ""
312 #endif
313 
314 #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
315 #if defined(MBEDTLS_USE_PSA_CRYPTO)
316 #define USAGE_ECJPAKE \
317     "    ecjpake_pw=%%s           default: none (disabled)\n"   \
318     "    ecjpake_pw_opaque=%%d    default: 0 (disabled)\n"
319 #else /* MBEDTLS_USE_PSA_CRYPTO */
320 #define USAGE_ECJPAKE \
321     "    ecjpake_pw=%%s           default: none (disabled)\n"
322 #endif /* MBEDTLS_USE_PSA_CRYPTO */
323 #else /* MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
324 #define USAGE_ECJPAKE ""
325 #endif /* MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
326 
327 #if defined(MBEDTLS_ECP_RESTARTABLE)
328 #define USAGE_ECRESTART \
329     "    ec_max_ops=%%s       default: library default (restart disabled)\n"
330 #else
331 #define USAGE_ECRESTART ""
332 #endif
333 
334 #if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION)
335 #define USAGE_SERIALIZATION \
336     "    serialize=%%d        default: 0 (do not serialize/deserialize)\n"     \
337     "                        options: 1 (serialize)\n"                         \
338     "                                 2 (serialize with re-initialization)\n"  \
339     "    context_file=%%s     The file path to write a serialized connection\n" \
340     "                        in the form of base64 code (serialize option\n"   \
341     "                        must be set)\n"                                   \
342     "                         default: \"\" (do nothing)\n"                    \
343     "                         option: a file path\n"
344 #else
345 #define USAGE_SERIALIZATION ""
346 #endif
347 
348 #if defined(MBEDTLS_SSL_EARLY_DATA)
349 #define USAGE_EARLY_DATA \
350     "    early_data=%%d      default: library default\n" \
351     "                        options: 0 (disabled), 1 (enabled)\n"
352 #else
353 #define USAGE_EARLY_DATA ""
354 #endif /* MBEDTLS_SSL_EARLY_DATA && MBEDTLS_SSL_PROTO_TLS1_3 */
355 
356 #define USAGE_KEY_OPAQUE_ALGS \
357     "    key_opaque_algs=%%s  Allowed opaque key algorithms.\n"                      \
358     "                        comma-separated pair of values among the following:\n"    \
359     "                        rsa-sign-pkcs1, rsa-sign-pss, rsa-sign-pss-sha256,\n"     \
360     "                        rsa-sign-pss-sha384, rsa-sign-pss-sha512, rsa-decrypt,\n" \
361     "                        ecdsa-sign, ecdh, none (only acceptable for\n"            \
362     "                        the second value).\n"                                     \
363 
364 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
365 #define USAGE_TLS1_3_KEY_EXCHANGE_MODES \
366     "    tls13_kex_modes=%%s   default: all\n"     \
367     "                          options: psk, psk_ephemeral, psk_all, ephemeral,\n"     \
368     "                                   ephemeral_all, all, psk_or_ephemeral\n"
369 #else
370 #define USAGE_TLS1_3_KEY_EXCHANGE_MODES ""
371 #endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
372 
373 /* USAGE is arbitrarily split to stay under the portable string literal
374  * length limit: 4095 bytes in C99. */
375 #define USAGE1 \
376     "\n usage: ssl_client2 param=<>...\n"                   \
377     "\n acceptable parameters:\n"                           \
378     "    server_name=%%s      default: localhost\n"         \
379     "    server_addr=%%s      default: given by name\n"     \
380     "    server_port=%%d      default: 4433\n"              \
381     "    request_page=%%s     default: \".\"\n"             \
382     "    request_size=%%d     default: about 34 (basic request)\n"           \
383     "                        (minimum: 0, max: " MAX_REQUEST_SIZE_STR ")\n"  \
384                                                                       "                        If 0, in the first exchange only an empty\n"    \
385                                                                       "                        application data message is sent followed by\n" \
386                                                                       "                        a second non-empty message before attempting\n" \
387                                                                       "                        to read a response from the server\n"           \
388                                                                       "    debug_level=%%d      default: 0 (disabled)\n"             \
389                                                                       "    build_version=%%d    default: none (disabled)\n"                     \
390                                                                       "                        option: 1 (print build version only and stop)\n" \
391                                                                       "    nbio=%%d             default: 0 (blocking I/O)\n"         \
392                                                                       "                        options: 1 (non-blocking), 2 (added delays)\n"   \
393                                                                       "    event=%%d            default: 0 (loop)\n"                            \
394                                                                       "                        options: 1 (level-triggered, implies nbio=1),\n" \
395                                                                       "    read_timeout=%%d     default: 0 ms (no timeout)\n"        \
396                                                                       "    max_resend=%%d       default: 0 (no resend on timeout)\n" \
397                                                                       "    skip_close_notify=%%d default: 0 (send close_notify)\n" \
398                                                                       "\n"                                                    \
399     USAGE_DTLS                                              \
400     USAGE_CID                                               \
401     USAGE_SRTP                                              \
402     "\n"
403 #define USAGE2 \
404     "    auth_mode=%%s        default: (library default: none)\n" \
405     "                        options: none, optional, required\n" \
406     USAGE_IO                                                \
407     USAGE_KEY_OPAQUE                                        \
408     USAGE_CA_CALLBACK                                       \
409     "\n"                                                    \
410     USAGE_PSK                                               \
411     USAGE_ECJPAKE                                           \
412     USAGE_ECRESTART                                         \
413     "\n"
414 #define USAGE3 \
415     "    allow_legacy=%%d     default: (library default: no)\n"   \
416     USAGE_RENEGO                                            \
417     "    exchanges=%%d        default: 1\n"                 \
418     "    reconnect=%%d        number of reconnections using session resumption\n" \
419     "                        default: 0 (disabled)\n"       \
420     "    reco_server_name=%%s  default: NULL\n"             \
421     "    reco_delay=%%d       default: 0 milliseconds\n"         \
422     "    reco_mode=%%d        0: copy session, 1: serialize session\n" \
423     "                        default: 1\n"      \
424     "    reconnect_hard=%%d   default: 0 (disabled)\n"      \
425     USAGE_TICKETS                                           \
426     USAGE_EAP_TLS                                           \
427     USAGE_MAX_FRAG_LEN                                      \
428     USAGE_CONTEXT_CRT_CB                                    \
429     USAGE_ALPN                                              \
430     USAGE_EMS                                               \
431     USAGE_ETM                                               \
432     USAGE_REPRODUCIBLE                                      \
433     USAGE_GROUPS                                            \
434     USAGE_SIG_ALGS                                          \
435     USAGE_EARLY_DATA                                        \
436     USAGE_DHMLEN                                            \
437     USAGE_KEY_OPAQUE_ALGS                                   \
438     "\n"
439 
440 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
441 #define TLS1_3_VERSION_OPTIONS  ", tls13"
442 #else /* MBEDTLS_SSL_PROTO_TLS1_3 */
443 #define TLS1_3_VERSION_OPTIONS  ""
444 #endif /* !MBEDTLS_SSL_PROTO_TLS1_3 */
445 
446 #define USAGE4 \
447     "    allow_sha1=%%d       default: 0\n"                                   \
448     "    min_version=%%s      default: (library default: tls12)\n"            \
449     "    max_version=%%s      default: (library default: tls12)\n"            \
450     "    force_version=%%s    default: \"\" (none)\n"                         \
451     "                         options: tls12, dtls12" TLS1_3_VERSION_OPTIONS  \
452     "\n\n"                                                                    \
453     "    force_ciphersuite=<name>    default: all enabled\n"                  \
454     USAGE_TLS1_3_KEY_EXCHANGE_MODES                                           \
455     "    query_config=<name>         return 0 if the specified\n"             \
456     "                                configuration macro is defined and 1\n"  \
457     "                                otherwise. The expansion of the macro\n" \
458     "                                is printed if it is defined\n"           \
459     USAGE_SERIALIZATION                                                       \
460     "\n"
461 
462 /*
463  * global options
464  */
465 struct options {
466     const char *server_name;    /* hostname of the server (client only)     */
467     const char *server_addr;    /* address of the server (client only)      */
468     const char *server_port;    /* port on which the ssl service runs       */
469     int debug_level;            /* level of debugging                       */
470     int nbio;                   /* should I/O be blocking?                  */
471     int event;                  /* loop or event-driven IO? level or edge triggered? */
472     uint32_t read_timeout;      /* timeout on mbedtls_ssl_read() in milliseconds     */
473     int max_resend;             /* DTLS times to resend on read timeout     */
474     const char *request_page;   /* page on server to request                */
475     int request_size;           /* pad request with header to requested size */
476     const char *ca_file;        /* the file with the CA certificate(s)      */
477     const char *ca_path;        /* the path with the CA certificate(s) reside */
478     const char *crt_file;       /* the file with the client certificate     */
479     const char *key_file;       /* the file with the client key             */
480     int key_opaque;             /* handle private key as if it were opaque  */
481 #if defined(MBEDTLS_USE_PSA_CRYPTO)
482     int psk_opaque;
483 #endif
484 #if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
485     int ca_callback;            /* Use callback for trusted certificate list */
486 #endif
487     const char *key_pwd;        /* the password for the client key          */
488     const char *psk;            /* the pre-shared key                       */
489     const char *psk_identity;   /* the pre-shared key identity              */
490     const char *ecjpake_pw;     /* the EC J-PAKE password                   */
491 #if defined(MBEDTLS_USE_PSA_CRYPTO)
492     int ecjpake_pw_opaque;      /* set to 1 to use the opaque method for setting the password */
493 #endif
494     int ec_max_ops;             /* EC consecutive operations limit          */
495     int force_ciphersuite[2];   /* protocol/ciphersuite to use, or all      */
496 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
497     int tls13_kex_modes;        /* supported TLS 1.3 key exchange modes     */
498 #endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
499     int renegotiation;          /* enable / disable renegotiation           */
500     int allow_legacy;           /* allow legacy renegotiation               */
501     int renegotiate;            /* attempt renegotiation?                   */
502     int renego_delay;           /* delay before enforcing renegotiation     */
503     int exchanges;              /* number of data exchanges                 */
504     int min_version;            /* minimum protocol version accepted        */
505     int max_version;            /* maximum protocol version accepted        */
506     int allow_sha1;             /* flag for SHA-1 support                   */
507     int auth_mode;              /* verify mode for connection               */
508     unsigned char mfl_code;     /* code for maximum fragment length         */
509     int trunc_hmac;             /* negotiate truncated hmac or not          */
510     int recsplit;               /* enable record splitting?                 */
511     int dhmlen;                 /* minimum DHM params len in bits           */
512     int reconnect;              /* attempt to resume session                */
513     const char *reco_server_name;     /* hostname of the server (re-connect)     */
514     int reco_delay;             /* delay in seconds before resuming session */
515     int reco_mode;              /* how to keep the session around           */
516     int reconnect_hard;         /* unexpectedly reconnect from the same port */
517     int tickets;                /* enable / disable session tickets         */
518     const char *groups;         /* list of supported groups                 */
519     const char *sig_algs;       /* supported TLS 1.3 signature algorithms   */
520     const char *alpn_string;    /* ALPN supported protocols                 */
521     int transport;              /* TLS or DTLS?                             */
522     uint32_t hs_to_min;         /* Initial value of DTLS handshake timer    */
523     uint32_t hs_to_max;         /* Max value of DTLS handshake timer        */
524     int dtls_mtu;               /* UDP Maximum transport unit for DTLS       */
525     int fallback;               /* is this a fallback connection?           */
526     int dgram_packing;          /* allow/forbid datagram packing            */
527     int extended_ms;            /* negotiate extended master secret?        */
528     int etm;                    /* negotiate encrypt then mac?              */
529     int context_crt_cb;         /* use context-specific CRT verify callback */
530     int eap_tls;                /* derive EAP-TLS keying material?          */
531     int nss_keylog;             /* export NSS key log material              */
532     const char *nss_keylog_file; /* NSS key log file                        */
533     int cid_enabled;            /* whether to use the CID extension or not  */
534     int cid_enabled_renego;     /* whether to use the CID extension or not
535                                  * during renegotiation                     */
536     const char *cid_val;        /* the CID to use for incoming messages     */
537     int serialize;              /* serialize/deserialize connection         */
538     const char *context_file;   /* the file to write a serialized connection
539                                  * in the form of base64 code (serialize
540                                  * option must be set)                      */
541     const char *cid_val_renego; /* the CID to use for incoming messages
542                                  * after renegotiation                      */
543     int reproducible;           /* make communication reproducible          */
544     int skip_close_notify;      /* skip sending the close_notify alert      */
545 #if defined(MBEDTLS_SSL_EARLY_DATA)
546     int early_data;             /* early data enablement flag               */
547 #endif
548     int query_config_mode;      /* whether to read config                   */
549     int use_srtp;               /* Support SRTP                             */
550     int force_srtp_profile;     /* SRTP protection profile to use or all    */
551     const char *mki;            /* The dtls mki value to use                */
552     const char *key_opaque_alg1; /* Allowed opaque key alg 1                */
553     const char *key_opaque_alg2; /* Allowed Opaque key alg 2                */
554 } opt;
555 
556 #include "ssl_test_common_source.c"
557 
558 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
559 static unsigned char peer_crt_info[1024];
560 
561 /*
562  * Enabled if debug_level > 1 in code below
563  */
my_verify(void * data,mbedtls_x509_crt * crt,int depth,uint32_t * flags)564 static int my_verify(void *data, mbedtls_x509_crt *crt,
565                      int depth, uint32_t *flags)
566 {
567     char buf[1024];
568     ((void) data);
569 
570     mbedtls_printf("\nVerify requested for (Depth %d):\n", depth);
571 
572 #if !defined(MBEDTLS_X509_REMOVE_INFO)
573     mbedtls_x509_crt_info(buf, sizeof(buf) - 1, "", crt);
574     if (depth == 0) {
575         memcpy(peer_crt_info, buf, sizeof(buf));
576     }
577 
578     if (opt.debug_level == 0) {
579         return 0;
580     }
581 
582     mbedtls_printf("%s", buf);
583 #else
584     ((void) crt);
585     ((void) depth);
586 #endif
587 
588     if ((*flags) == 0) {
589         mbedtls_printf("  This certificate has no flags\n");
590     } else {
591         x509_crt_verify_info(buf, sizeof(buf), "  ! ", *flags);
592         mbedtls_printf("%s\n", buf);
593     }
594 
595     return 0;
596 }
597 #endif /* MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED */
598 
599 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
report_cid_usage(mbedtls_ssl_context * ssl,const char * additional_description)600 int report_cid_usage(mbedtls_ssl_context *ssl,
601                      const char *additional_description)
602 {
603     int ret;
604     unsigned char peer_cid[MBEDTLS_SSL_CID_OUT_LEN_MAX];
605     size_t peer_cid_len;
606     int cid_negotiated;
607 
608     if (opt.transport != MBEDTLS_SSL_TRANSPORT_DATAGRAM) {
609         return 0;
610     }
611 
612     /* Check if the use of a CID has been negotiated,
613      * but don't ask for the CID value and length.
614      *
615      * Note: Here and below, we're demonstrating the various ways
616      *       in which mbedtls_ssl_get_peer_cid() can be called,
617      *       depending on whether or not the length/value of the
618      *       peer's CID is needed.
619      *
620      *       An actual application, however, should use
621      *       just one call to mbedtls_ssl_get_peer_cid(). */
622     ret = mbedtls_ssl_get_peer_cid(ssl, &cid_negotiated,
623                                    NULL, NULL);
624     if (ret != 0) {
625         mbedtls_printf(" failed\n  ! mbedtls_ssl_get_peer_cid returned -0x%x\n\n",
626                        (unsigned int) -ret);
627         return ret;
628     }
629 
630     if (cid_negotiated == MBEDTLS_SSL_CID_DISABLED) {
631         if (opt.cid_enabled == MBEDTLS_SSL_CID_ENABLED) {
632             mbedtls_printf("(%s) Use of Connection ID was rejected by the server.\n",
633                            additional_description);
634         }
635     } else {
636         size_t idx = 0;
637         mbedtls_printf("(%s) Use of Connection ID has been negotiated.\n",
638                        additional_description);
639 
640         /* Ask for just the length of the peer's CID. */
641         ret = mbedtls_ssl_get_peer_cid(ssl, &cid_negotiated,
642                                        NULL, &peer_cid_len);
643         if (ret != 0) {
644             mbedtls_printf(" failed\n  ! mbedtls_ssl_get_peer_cid returned -0x%x\n\n",
645                            (unsigned int) -ret);
646             return ret;
647         }
648 
649         /* Ask for just length + value of the peer's CID. */
650         ret = mbedtls_ssl_get_peer_cid(ssl, &cid_negotiated,
651                                        peer_cid, &peer_cid_len);
652         if (ret != 0) {
653             mbedtls_printf(" failed\n  ! mbedtls_ssl_get_peer_cid returned -0x%x\n\n",
654                            (unsigned int) -ret);
655             return ret;
656         }
657         mbedtls_printf("(%s) Peer CID (length %u Bytes): ",
658                        additional_description,
659                        (unsigned) peer_cid_len);
660         while (idx < peer_cid_len) {
661             mbedtls_printf("%02x ", peer_cid[idx]);
662             idx++;
663         }
664         mbedtls_printf("\n");
665     }
666 
667     return 0;
668 }
669 #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
670 
ssl_save_session_serialize(mbedtls_ssl_context * ssl,unsigned char ** session_data,size_t * session_data_len)671 static int ssl_save_session_serialize(mbedtls_ssl_context *ssl,
672                                       unsigned char **session_data,
673                                       size_t *session_data_len)
674 {
675     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
676     mbedtls_ssl_session exported_session;
677 
678     /* free any previously saved data */
679     if (*session_data != NULL) {
680         mbedtls_platform_zeroize(*session_data, *session_data_len);
681         mbedtls_free(*session_data);
682         *session_data = NULL;
683         *session_data_len = 0;
684     }
685 
686     mbedtls_ssl_session_init(&exported_session);
687     ret = mbedtls_ssl_get_session(ssl, &exported_session);
688     if (ret != 0) {
689         mbedtls_printf(
690             "failed\n  ! mbedtls_ssl_get_session() returned -%#02x\n",
691             (unsigned) -ret);
692         goto exit;
693     }
694 
695     /* get size of the buffer needed */
696     (void) mbedtls_ssl_session_save(&exported_session, NULL, 0, session_data_len);
697     *session_data = mbedtls_calloc(1, *session_data_len);
698     if (*session_data == NULL) {
699         mbedtls_printf(" failed\n  ! alloc %u bytes for session data\n",
700                        (unsigned) *session_data_len);
701         ret = MBEDTLS_ERR_SSL_ALLOC_FAILED;
702         goto exit;
703     }
704 
705     /* actually save session data */
706     if ((ret = mbedtls_ssl_session_save(&exported_session,
707                                         *session_data, *session_data_len,
708                                         session_data_len)) != 0) {
709         mbedtls_printf(" failed\n  ! mbedtls_ssl_session_saved returned -0x%04x\n\n",
710                        (unsigned int) -ret);
711         goto exit;
712     }
713 
714 exit:
715     mbedtls_ssl_session_free(&exported_session);
716     return ret;
717 }
718 
719 /*
720  * Build HTTP request
721  */
build_http_request(unsigned char * buf,size_t buf_size,size_t * request_len)722 static int build_http_request(unsigned char *buf, size_t buf_size, size_t *request_len)
723 {
724     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
725     size_t len, tail_len, request_size;
726 
727     ret = mbedtls_snprintf((char *) buf, buf_size, GET_REQUEST, opt.request_page);
728     if (ret < 0) {
729         return ret;
730     }
731 
732     len = (size_t) ret;
733     tail_len = strlen(GET_REQUEST_END);
734     if (opt.request_size != DFL_REQUEST_SIZE) {
735         request_size = (size_t) opt.request_size;
736     } else {
737         request_size = len + tail_len;
738     }
739 
740     if (request_size > buf_size) {
741         return MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL;
742     }
743 
744     /* Add padding to GET request to reach opt.request_size in length */
745     if (opt.request_size != DFL_REQUEST_SIZE &&
746         len + tail_len < request_size) {
747         memset(buf + len, 'A', request_size - len - tail_len);
748         len = request_size - tail_len;
749     }
750 
751     strncpy((char *) buf + len, GET_REQUEST_END, buf_size - len);
752     len += tail_len;
753 
754     /* Truncate if request size is smaller than the "natural" size */
755     if (opt.request_size != DFL_REQUEST_SIZE &&
756         len > request_size) {
757         len = request_size;
758 
759         /* Still end with \r\n unless that's really not possible */
760         if (len >= 2) {
761             buf[len - 2] = '\r';
762         }
763         if (len >= 1) {
764             buf[len - 1] = '\n';
765         }
766     }
767 
768     *request_len = len;
769 
770     return 0;
771 }
772 
main(int argc,char * argv[])773 int main(int argc, char *argv[])
774 {
775     int ret = 0, i;
776     size_t len, written, frags, retry_left;
777     int query_config_ret = 0;
778     mbedtls_net_context server_fd;
779     io_ctx_t io_ctx;
780 
781 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
782     uint16_t sig_alg_list[SIG_ALG_LIST_SIZE];
783 #endif
784 
785     unsigned char buf[MAX_REQUEST_SIZE + 1];
786 
787 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_PSK_ENABLED)
788     unsigned char psk[MBEDTLS_PSK_MAX_LEN];
789     size_t psk_len = 0;
790 #endif
791 
792 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
793     unsigned char cid[MBEDTLS_SSL_CID_IN_LEN_MAX];
794     unsigned char cid_renego[MBEDTLS_SSL_CID_IN_LEN_MAX];
795     size_t cid_len = 0;
796     size_t cid_renego_len = 0;
797 #endif
798 
799 #if defined(MBEDTLS_SSL_ALPN)
800     const char *alpn_list[ALPN_LIST_SIZE];
801 #endif
802 
803 #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
804     unsigned char alloc_buf[MEMORY_HEAP_SIZE];
805 #endif
806     uint16_t group_list[GROUP_LIST_SIZE];
807 #if defined(MBEDTLS_SSL_DTLS_SRTP)
808     unsigned char mki[MBEDTLS_TLS_SRTP_MAX_MKI_LENGTH];
809     size_t mki_len = 0;
810 #endif
811 
812     const char *pers = "ssl_client2";
813 
814 #if defined(MBEDTLS_USE_PSA_CRYPTO)
815 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_PSK_ENABLED)
816     mbedtls_svc_key_id_t slot = MBEDTLS_SVC_KEY_ID_INIT;
817     psa_algorithm_t alg = 0;
818     psa_key_attributes_t key_attributes;
819 #endif
820     psa_status_t status;
821 #elif defined(MBEDTLS_SSL_PROTO_TLS1_3)
822     psa_status_t status;
823 #endif
824 
825     rng_context_t rng;
826     mbedtls_ssl_context ssl;
827     mbedtls_ssl_config conf;
828     mbedtls_ssl_session saved_session;
829     unsigned char *session_data = NULL;
830     size_t session_data_len = 0;
831 #if defined(MBEDTLS_TIMING_C)
832     mbedtls_timing_delay_context timer;
833 #endif
834 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
835     uint32_t flags;
836     mbedtls_x509_crt cacert;
837     mbedtls_x509_crt clicert;
838     mbedtls_pk_context pkey;
839     mbedtls_x509_crt_profile crt_profile_for_test = mbedtls_x509_crt_profile_default;
840 #if defined(MBEDTLS_USE_PSA_CRYPTO)
841     mbedtls_svc_key_id_t key_slot = MBEDTLS_SVC_KEY_ID_INIT; /* invalid key slot */
842 #endif
843 #endif  /* MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED */
844     char *p, *q;
845     const int *list;
846 #if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION)
847     unsigned char *context_buf = NULL;
848     size_t context_buf_len;
849 #endif
850     unsigned char eap_tls_keymaterial[16];
851     unsigned char eap_tls_iv[8];
852     const char *eap_tls_label = "client EAP encryption";
853     eap_tls_keys eap_tls_keying;
854 #if defined(MBEDTLS_SSL_DTLS_SRTP)
855     /*! master keys and master salt for SRTP generated during handshake */
856     unsigned char dtls_srtp_key_material[MBEDTLS_TLS_SRTP_MAX_KEY_MATERIAL_LENGTH];
857     const char *dtls_srtp_label = "EXTRACTOR-dtls_srtp";
858     dtls_srtp_keys dtls_srtp_keying;
859     const mbedtls_ssl_srtp_profile default_profiles[] = {
860         MBEDTLS_TLS_SRTP_AES128_CM_HMAC_SHA1_80,
861         MBEDTLS_TLS_SRTP_AES128_CM_HMAC_SHA1_32,
862         MBEDTLS_TLS_SRTP_NULL_HMAC_SHA1_80,
863         MBEDTLS_TLS_SRTP_NULL_HMAC_SHA1_32,
864         MBEDTLS_TLS_SRTP_UNSET
865     };
866 #endif /* MBEDTLS_SSL_DTLS_SRTP */
867 #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED) && \
868     defined(MBEDTLS_USE_PSA_CRYPTO)
869     mbedtls_svc_key_id_t ecjpake_pw_slot = MBEDTLS_SVC_KEY_ID_INIT; /* ecjpake password key slot */
870 #endif /* MBEDTLS_USE_PSA_CRYPTO && MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
871 
872 #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
873     mbedtls_memory_buffer_alloc_init(alloc_buf, sizeof(alloc_buf));
874 #endif
875 
876 #if defined(MBEDTLS_TEST_HOOKS)
877     test_hooks_init();
878 #endif /* MBEDTLS_TEST_HOOKS */
879 
880     /*
881      * Make sure memory references are valid.
882      */
883     mbedtls_net_init(&server_fd);
884     mbedtls_ssl_init(&ssl);
885     mbedtls_ssl_config_init(&conf);
886     mbedtls_ssl_session_init(&saved_session);
887     rng_init(&rng);
888 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
889     mbedtls_x509_crt_init(&cacert);
890     mbedtls_x509_crt_init(&clicert);
891     mbedtls_pk_init(&pkey);
892 #endif
893 #if defined(MBEDTLS_SSL_ALPN)
894     memset((void *) alpn_list, 0, sizeof(alpn_list));
895 #endif
896 
897 #if defined(MBEDTLS_USE_PSA_CRYPTO) || defined(MBEDTLS_SSL_PROTO_TLS1_3)
898     status = psa_crypto_init();
899     if (status != PSA_SUCCESS) {
900         mbedtls_fprintf(stderr, "Failed to initialize PSA Crypto implementation: %d\n",
901                         (int) status);
902         ret = MBEDTLS_ERR_SSL_HW_ACCEL_FAILED;
903         goto exit;
904     }
905 #endif  /* MBEDTLS_USE_PSA_CRYPTO || MBEDTLS_SSL_PROTO_TLS1_3 */
906 #if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG)
907     mbedtls_test_enable_insecure_external_rng();
908 #endif  /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
909 
910     opt.server_name         = DFL_SERVER_NAME;
911     opt.server_addr         = DFL_SERVER_ADDR;
912     opt.server_port         = DFL_SERVER_PORT;
913     opt.debug_level         = DFL_DEBUG_LEVEL;
914     opt.cid_enabled         = DFL_CID_ENABLED;
915     opt.cid_val             = DFL_CID_VALUE;
916     opt.cid_enabled_renego  = DFL_CID_ENABLED_RENEGO;
917     opt.cid_val_renego      = DFL_CID_VALUE_RENEGO;
918     opt.nbio                = DFL_NBIO;
919     opt.event               = DFL_EVENT;
920     opt.context_crt_cb      = DFL_CONTEXT_CRT_CB;
921     opt.read_timeout        = DFL_READ_TIMEOUT;
922     opt.max_resend          = DFL_MAX_RESEND;
923     opt.request_page        = DFL_REQUEST_PAGE;
924     opt.request_size        = DFL_REQUEST_SIZE;
925     opt.ca_file             = DFL_CA_FILE;
926     opt.ca_path             = DFL_CA_PATH;
927     opt.crt_file            = DFL_CRT_FILE;
928     opt.key_file            = DFL_KEY_FILE;
929     opt.key_opaque          = DFL_KEY_OPAQUE;
930     opt.key_pwd             = DFL_KEY_PWD;
931     opt.psk                 = DFL_PSK;
932 #if defined(MBEDTLS_USE_PSA_CRYPTO)
933     opt.psk_opaque          = DFL_PSK_OPAQUE;
934 #endif
935 #if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
936     opt.ca_callback         = DFL_CA_CALLBACK;
937 #endif
938     opt.psk_identity        = DFL_PSK_IDENTITY;
939     opt.ecjpake_pw          = DFL_ECJPAKE_PW;
940 #if defined(MBEDTLS_USE_PSA_CRYPTO)
941     opt.ecjpake_pw_opaque   = DFL_ECJPAKE_PW_OPAQUE;
942 #endif
943     opt.ec_max_ops          = DFL_EC_MAX_OPS;
944     opt.force_ciphersuite[0] = DFL_FORCE_CIPHER;
945 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
946     opt.tls13_kex_modes     = DFL_TLS1_3_KEX_MODES;
947 #endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
948     opt.renegotiation       = DFL_RENEGOTIATION;
949     opt.allow_legacy        = DFL_ALLOW_LEGACY;
950     opt.renegotiate         = DFL_RENEGOTIATE;
951     opt.exchanges           = DFL_EXCHANGES;
952     opt.min_version         = DFL_MIN_VERSION;
953     opt.max_version         = DFL_MAX_VERSION;
954     opt.allow_sha1          = DFL_SHA1;
955     opt.auth_mode           = DFL_AUTH_MODE;
956     opt.mfl_code            = DFL_MFL_CODE;
957     opt.trunc_hmac          = DFL_TRUNC_HMAC;
958     opt.recsplit            = DFL_RECSPLIT;
959     opt.dhmlen              = DFL_DHMLEN;
960     opt.reconnect           = DFL_RECONNECT;
961     opt.reco_server_name    = DFL_RECO_SERVER_NAME;
962     opt.reco_delay          = DFL_RECO_DELAY;
963     opt.reco_mode           = DFL_RECO_MODE;
964     opt.reconnect_hard      = DFL_RECONNECT_HARD;
965     opt.tickets             = DFL_TICKETS;
966     opt.alpn_string         = DFL_ALPN_STRING;
967     opt.groups              = DFL_GROUPS;
968     opt.sig_algs            = DFL_SIG_ALGS;
969 #if defined(MBEDTLS_SSL_EARLY_DATA)
970     opt.early_data          = DFL_EARLY_DATA;
971 #endif
972     opt.transport           = DFL_TRANSPORT;
973     opt.hs_to_min           = DFL_HS_TO_MIN;
974     opt.hs_to_max           = DFL_HS_TO_MAX;
975     opt.dtls_mtu            = DFL_DTLS_MTU;
976     opt.fallback            = DFL_FALLBACK;
977     opt.extended_ms         = DFL_EXTENDED_MS;
978     opt.etm                 = DFL_ETM;
979     opt.dgram_packing       = DFL_DGRAM_PACKING;
980     opt.serialize           = DFL_SERIALIZE;
981     opt.context_file        = DFL_CONTEXT_FILE;
982     opt.eap_tls             = DFL_EAP_TLS;
983     opt.reproducible        = DFL_REPRODUCIBLE;
984     opt.nss_keylog          = DFL_NSS_KEYLOG;
985     opt.nss_keylog_file     = DFL_NSS_KEYLOG_FILE;
986     opt.skip_close_notify   = DFL_SKIP_CLOSE_NOTIFY;
987     opt.query_config_mode   = DFL_QUERY_CONFIG_MODE;
988     opt.use_srtp            = DFL_USE_SRTP;
989     opt.force_srtp_profile  = DFL_SRTP_FORCE_PROFILE;
990     opt.mki                 = DFL_SRTP_MKI;
991     opt.key_opaque_alg1     = DFL_KEY_OPAQUE_ALG;
992     opt.key_opaque_alg2     = DFL_KEY_OPAQUE_ALG;
993 
994     p = q = NULL;
995     if (argc < 1) {
996 usage:
997         if (p != NULL && q != NULL) {
998             printf("unrecognized value for '%s': '%s'\n", p, q);
999         } else if (p != NULL && q == NULL) {
1000             printf("unrecognized param: '%s'\n", p);
1001         }
1002 
1003         mbedtls_printf("usage: ssl_client2 [param=value] [...]\n");
1004         mbedtls_printf("       ssl_client2 help[_theme]\n");
1005         mbedtls_printf("'help' lists acceptable 'param' and 'value'\n");
1006         mbedtls_printf("'help_ciphersuites' lists available ciphersuites\n");
1007         mbedtls_printf("\n");
1008 
1009         if (ret == 0) {
1010             ret = 1;
1011         }
1012         goto exit;
1013     }
1014 
1015     for (i = 1; i < argc; i++) {
1016         p = argv[i];
1017 
1018         if (strcmp(p, "help") == 0) {
1019             mbedtls_printf(USAGE1);
1020             mbedtls_printf(USAGE2);
1021             mbedtls_printf(USAGE3);
1022             mbedtls_printf(USAGE4);
1023 
1024             ret = 0;
1025             goto exit;
1026         }
1027         if (strcmp(p, "help_ciphersuites") == 0) {
1028             mbedtls_printf(" acceptable ciphersuite names:\n");
1029             for (list = mbedtls_ssl_list_ciphersuites();
1030                  *list != 0;
1031                  list++) {
1032                 mbedtls_printf(" %s\n", mbedtls_ssl_get_ciphersuite_name(*list));
1033             }
1034 
1035             ret = 0;
1036             goto exit;
1037         }
1038 
1039         if ((q = strchr(p, '=')) == NULL) {
1040             mbedtls_printf("param requires a value: '%s'\n", p);
1041             p = NULL; // avoid "unrecnognized param" message
1042             goto usage;
1043         }
1044         *q++ = '\0';
1045 
1046         if (strcmp(p, "server_name") == 0) {
1047             opt.server_name = q;
1048         } else if (strcmp(p, "server_addr") == 0) {
1049             opt.server_addr = q;
1050         } else if (strcmp(p, "server_port") == 0) {
1051             opt.server_port = q;
1052         } else if (strcmp(p, "dtls") == 0) {
1053             int t = atoi(q);
1054             if (t == 0) {
1055                 opt.transport = MBEDTLS_SSL_TRANSPORT_STREAM;
1056             } else if (t == 1) {
1057                 opt.transport = MBEDTLS_SSL_TRANSPORT_DATAGRAM;
1058             } else {
1059                 goto usage;
1060             }
1061         } else if (strcmp(p, "debug_level") == 0) {
1062             opt.debug_level = atoi(q);
1063             if (opt.debug_level < 0 || opt.debug_level > 65535) {
1064                 goto usage;
1065             }
1066         } else if (strcmp(p, "build_version") == 0) {
1067             if (strcmp(q, "1") == 0) {
1068                 mbedtls_printf("build version: %s (build %d)\n",
1069                                MBEDTLS_VERSION_STRING_FULL,
1070                                MBEDTLS_VERSION_NUMBER);
1071                 goto exit;
1072             }
1073         } else if (strcmp(p, "context_crt_cb") == 0) {
1074             opt.context_crt_cb = atoi(q);
1075             if (opt.context_crt_cb != 0 && opt.context_crt_cb != 1) {
1076                 goto usage;
1077             }
1078         } else if (strcmp(p, "nbio") == 0) {
1079             opt.nbio = atoi(q);
1080             if (opt.nbio < 0 || opt.nbio > 2) {
1081                 goto usage;
1082             }
1083         } else if (strcmp(p, "event") == 0) {
1084             opt.event = atoi(q);
1085             if (opt.event < 0 || opt.event > 2) {
1086                 goto usage;
1087             }
1088         } else if (strcmp(p, "read_timeout") == 0) {
1089             opt.read_timeout = atoi(q);
1090         } else if (strcmp(p, "max_resend") == 0) {
1091             opt.max_resend = atoi(q);
1092             if (opt.max_resend < 0) {
1093                 goto usage;
1094             }
1095         } else if (strcmp(p, "request_page") == 0) {
1096             opt.request_page = q;
1097         } else if (strcmp(p, "request_size") == 0) {
1098             opt.request_size = atoi(q);
1099             if (opt.request_size < 0 ||
1100                 opt.request_size > MAX_REQUEST_SIZE) {
1101                 goto usage;
1102             }
1103         } else if (strcmp(p, "ca_file") == 0) {
1104             opt.ca_file = q;
1105         } else if (strcmp(p, "ca_path") == 0) {
1106             opt.ca_path = q;
1107         } else if (strcmp(p, "crt_file") == 0) {
1108             opt.crt_file = q;
1109         } else if (strcmp(p, "key_file") == 0) {
1110             opt.key_file = q;
1111         } else if (strcmp(p, "key_pwd") == 0) {
1112             opt.key_pwd = q;
1113         }
1114 #if defined(MBEDTLS_USE_PSA_CRYPTO) && defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
1115         else if (strcmp(p, "key_opaque") == 0) {
1116             opt.key_opaque = atoi(q);
1117         }
1118 #endif
1119 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
1120         else if (strcmp(p, "cid") == 0) {
1121             opt.cid_enabled = atoi(q);
1122             if (opt.cid_enabled != 0 && opt.cid_enabled != 1) {
1123                 goto usage;
1124             }
1125         } else if (strcmp(p, "cid_renego") == 0) {
1126             opt.cid_enabled_renego = atoi(q);
1127             if (opt.cid_enabled_renego != 0 && opt.cid_enabled_renego != 1) {
1128                 goto usage;
1129             }
1130         } else if (strcmp(p, "cid_val") == 0) {
1131             opt.cid_val = q;
1132         } else if (strcmp(p, "cid_val_renego") == 0) {
1133             opt.cid_val_renego = q;
1134         }
1135 #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
1136         else if (strcmp(p, "psk") == 0) {
1137             opt.psk = q;
1138         }
1139 #if defined(MBEDTLS_USE_PSA_CRYPTO)
1140         else if (strcmp(p, "psk_opaque") == 0) {
1141             opt.psk_opaque = atoi(q);
1142         }
1143 #endif
1144 #if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
1145         else if (strcmp(p, "ca_callback") == 0) {
1146             opt.ca_callback = atoi(q);
1147         }
1148 #endif
1149         else if (strcmp(p, "psk_identity") == 0) {
1150             opt.psk_identity = q;
1151         } else if (strcmp(p, "ecjpake_pw") == 0) {
1152             opt.ecjpake_pw = q;
1153         }
1154 #if defined(MBEDTLS_USE_PSA_CRYPTO)
1155         else if (strcmp(p, "ecjpake_pw_opaque") == 0) {
1156             opt.ecjpake_pw_opaque = atoi(q);
1157         }
1158 #endif
1159         else if (strcmp(p, "ec_max_ops") == 0) {
1160             opt.ec_max_ops = atoi(q);
1161         } else if (strcmp(p, "force_ciphersuite") == 0) {
1162             opt.force_ciphersuite[0] = mbedtls_ssl_get_ciphersuite_id(q);
1163 
1164             if (opt.force_ciphersuite[0] == 0) {
1165                 ret = 2;
1166                 goto usage;
1167             }
1168             opt.force_ciphersuite[1] = 0;
1169         } else if (strcmp(p, "renegotiation") == 0) {
1170             opt.renegotiation = (atoi(q)) ?
1171                                 MBEDTLS_SSL_RENEGOTIATION_ENABLED :
1172                                 MBEDTLS_SSL_RENEGOTIATION_DISABLED;
1173         } else if (strcmp(p, "allow_legacy") == 0) {
1174             switch (atoi(q)) {
1175                 case -1:
1176                     opt.allow_legacy = MBEDTLS_SSL_LEGACY_BREAK_HANDSHAKE;
1177                     break;
1178                 case 0:
1179                     opt.allow_legacy = MBEDTLS_SSL_LEGACY_NO_RENEGOTIATION;
1180                     break;
1181                 case 1:
1182                     opt.allow_legacy = MBEDTLS_SSL_LEGACY_ALLOW_RENEGOTIATION;
1183                     break;
1184                 default: goto usage;
1185             }
1186         } else if (strcmp(p, "renegotiate") == 0) {
1187             opt.renegotiate = atoi(q);
1188             if (opt.renegotiate < 0 || opt.renegotiate > 1) {
1189                 goto usage;
1190             }
1191         } else if (strcmp(p, "exchanges") == 0) {
1192             opt.exchanges = atoi(q);
1193             if (opt.exchanges < 1) {
1194                 goto usage;
1195             }
1196         } else if (strcmp(p, "reconnect") == 0) {
1197             opt.reconnect = atoi(q);
1198             if (opt.reconnect < 0 || opt.reconnect > 2) {
1199                 goto usage;
1200             }
1201         } else if (strcmp(p, "reco_server_name") == 0) {
1202             opt.reco_server_name = q;
1203         } else if (strcmp(p, "reco_delay") == 0) {
1204             opt.reco_delay = atoi(q);
1205             if (opt.reco_delay < 0) {
1206                 goto usage;
1207             }
1208         } else if (strcmp(p, "reco_mode") == 0) {
1209             opt.reco_mode = atoi(q);
1210             if (opt.reco_mode < 0) {
1211                 goto usage;
1212             }
1213         } else if (strcmp(p, "reconnect_hard") == 0) {
1214             opt.reconnect_hard = atoi(q);
1215             if (opt.reconnect_hard < 0 || opt.reconnect_hard > 1) {
1216                 goto usage;
1217             }
1218         } else if (strcmp(p, "tickets") == 0) {
1219             opt.tickets = atoi(q);
1220             if (opt.tickets < 0) {
1221                 goto usage;
1222             }
1223         } else if (strcmp(p, "alpn") == 0) {
1224             opt.alpn_string = q;
1225         } else if (strcmp(p, "extended_ms") == 0) {
1226             switch (atoi(q)) {
1227                 case 0:
1228                     opt.extended_ms = MBEDTLS_SSL_EXTENDED_MS_DISABLED;
1229                     break;
1230                 case 1:
1231                     opt.extended_ms = MBEDTLS_SSL_EXTENDED_MS_ENABLED;
1232                     break;
1233                 default: goto usage;
1234             }
1235         } else if (strcmp(p, "groups") == 0) {
1236             opt.groups = q;
1237         }
1238 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
1239         else if (strcmp(p, "sig_algs") == 0) {
1240             opt.sig_algs = q;
1241         }
1242 #endif
1243         else if (strcmp(p, "etm") == 0) {
1244             switch (atoi(q)) {
1245                 case 0: opt.etm = MBEDTLS_SSL_ETM_DISABLED; break;
1246                 case 1: opt.etm = MBEDTLS_SSL_ETM_ENABLED; break;
1247                 default: goto usage;
1248             }
1249         }
1250 
1251 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
1252 #if defined(MBEDTLS_SSL_EARLY_DATA)
1253         else if (strcmp(p, "early_data") == 0) {
1254             switch (atoi(q)) {
1255                 case 0:
1256                     opt.early_data = MBEDTLS_SSL_EARLY_DATA_DISABLED;
1257                     break;
1258                 case 1:
1259                     opt.early_data = MBEDTLS_SSL_EARLY_DATA_ENABLED;
1260                     break;
1261                 default: goto usage;
1262             }
1263         }
1264 #endif /* MBEDTLS_SSL_EARLY_DATA */
1265 
1266         else if (strcmp(p, "tls13_kex_modes") == 0) {
1267             if (strcmp(q, "psk") == 0) {
1268                 opt.tls13_kex_modes = MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK;
1269             } else if (strcmp(q, "psk_ephemeral") == 0) {
1270                 opt.tls13_kex_modes = MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_EPHEMERAL;
1271             } else if (strcmp(q, "ephemeral") == 0) {
1272                 opt.tls13_kex_modes = MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL;
1273             } else if (strcmp(q, "ephemeral_all") == 0) {
1274                 opt.tls13_kex_modes = MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ALL;
1275             } else if (strcmp(q, "psk_all") == 0) {
1276                 opt.tls13_kex_modes = MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_ALL;
1277             } else if (strcmp(q, "all") == 0) {
1278                 opt.tls13_kex_modes = MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_ALL;
1279             } else if (strcmp(q, "psk_or_ephemeral") == 0) {
1280                 opt.tls13_kex_modes = MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK |
1281                                       MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL;
1282             } else {
1283                 goto usage;
1284             }
1285         }
1286 #endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
1287         else if (strcmp(p, "min_version") == 0) {
1288             if (strcmp(q, "tls12") == 0 ||
1289                 strcmp(q, "dtls12") == 0) {
1290                 opt.min_version = MBEDTLS_SSL_VERSION_TLS1_2;
1291             }
1292 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
1293             else if (strcmp(q, "tls13") == 0) {
1294                 opt.min_version = MBEDTLS_SSL_VERSION_TLS1_3;
1295             }
1296 #endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
1297             else {
1298                 goto usage;
1299             }
1300         } else if (strcmp(p, "max_version") == 0) {
1301             if (strcmp(q, "tls12") == 0 ||
1302                 strcmp(q, "dtls12") == 0) {
1303                 opt.max_version = MBEDTLS_SSL_VERSION_TLS1_2;
1304             }
1305 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
1306             else if (strcmp(q, "tls13") == 0) {
1307                 opt.max_version = MBEDTLS_SSL_VERSION_TLS1_3;
1308             }
1309 #endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
1310             else {
1311                 goto usage;
1312             }
1313         } else if (strcmp(p, "allow_sha1") == 0) {
1314             switch (atoi(q)) {
1315                 case 0:     opt.allow_sha1 = 0;   break;
1316                 case 1:     opt.allow_sha1 = 1;    break;
1317                 default:    goto usage;
1318             }
1319         } else if (strcmp(p, "force_version") == 0) {
1320             if (strcmp(q, "tls12") == 0) {
1321                 opt.min_version = MBEDTLS_SSL_VERSION_TLS1_2;
1322                 opt.max_version = MBEDTLS_SSL_VERSION_TLS1_2;
1323             } else if (strcmp(q, "dtls12") == 0) {
1324                 opt.min_version = MBEDTLS_SSL_VERSION_TLS1_2;
1325                 opt.max_version = MBEDTLS_SSL_VERSION_TLS1_2;
1326                 opt.transport = MBEDTLS_SSL_TRANSPORT_DATAGRAM;
1327             }
1328 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
1329             else if (strcmp(q, "tls13") == 0) {
1330                 opt.min_version = MBEDTLS_SSL_VERSION_TLS1_3;
1331                 opt.max_version = MBEDTLS_SSL_VERSION_TLS1_3;
1332             }
1333 #endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
1334             else {
1335                 goto usage;
1336             }
1337         } else if (strcmp(p, "auth_mode") == 0) {
1338             if (strcmp(q, "none") == 0) {
1339                 opt.auth_mode = MBEDTLS_SSL_VERIFY_NONE;
1340             } else if (strcmp(q, "optional") == 0) {
1341                 opt.auth_mode = MBEDTLS_SSL_VERIFY_OPTIONAL;
1342             } else if (strcmp(q, "required") == 0) {
1343                 opt.auth_mode = MBEDTLS_SSL_VERIFY_REQUIRED;
1344             } else {
1345                 goto usage;
1346             }
1347         } else if (strcmp(p, "max_frag_len") == 0) {
1348             if (strcmp(q, "512") == 0) {
1349                 opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_512;
1350             } else if (strcmp(q, "1024") == 0) {
1351                 opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_1024;
1352             } else if (strcmp(q, "2048") == 0) {
1353                 opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_2048;
1354             } else if (strcmp(q, "4096") == 0) {
1355                 opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_4096;
1356             } else {
1357                 goto usage;
1358             }
1359         } else if (strcmp(p, "trunc_hmac") == 0) {
1360             switch (atoi(q)) {
1361                 case 0: opt.trunc_hmac = MBEDTLS_SSL_TRUNC_HMAC_DISABLED; break;
1362                 case 1: opt.trunc_hmac = MBEDTLS_SSL_TRUNC_HMAC_ENABLED; break;
1363                 default: goto usage;
1364             }
1365         } else if (strcmp(p, "hs_timeout") == 0) {
1366             if ((p = strchr(q, '-')) == NULL) {
1367                 goto usage;
1368             }
1369             *p++ = '\0';
1370             opt.hs_to_min = atoi(q);
1371             opt.hs_to_max = atoi(p);
1372             if (opt.hs_to_min == 0 || opt.hs_to_max < opt.hs_to_min) {
1373                 goto usage;
1374             }
1375         } else if (strcmp(p, "mtu") == 0) {
1376             opt.dtls_mtu = atoi(q);
1377             if (opt.dtls_mtu < 0) {
1378                 goto usage;
1379             }
1380         } else if (strcmp(p, "dgram_packing") == 0) {
1381             opt.dgram_packing = atoi(q);
1382             if (opt.dgram_packing != 0 &&
1383                 opt.dgram_packing != 1) {
1384                 goto usage;
1385             }
1386         } else if (strcmp(p, "recsplit") == 0) {
1387             opt.recsplit = atoi(q);
1388             if (opt.recsplit < 0 || opt.recsplit > 1) {
1389                 goto usage;
1390             }
1391         } else if (strcmp(p, "dhmlen") == 0) {
1392             opt.dhmlen = atoi(q);
1393             if (opt.dhmlen < 0) {
1394                 goto usage;
1395             }
1396         } else if (strcmp(p, "query_config") == 0) {
1397             opt.query_config_mode = 1;
1398             query_config_ret = query_config(q);
1399             goto exit;
1400         } else if (strcmp(p, "serialize") == 0) {
1401             opt.serialize = atoi(q);
1402             if (opt.serialize < 0 || opt.serialize > 2) {
1403                 goto usage;
1404             }
1405         } else if (strcmp(p, "context_file") == 0) {
1406             opt.context_file = q;
1407         } else if (strcmp(p, "eap_tls") == 0) {
1408             opt.eap_tls = atoi(q);
1409             if (opt.eap_tls < 0 || opt.eap_tls > 1) {
1410                 goto usage;
1411             }
1412         } else if (strcmp(p, "reproducible") == 0) {
1413             opt.reproducible = 1;
1414         } else if (strcmp(p, "nss_keylog") == 0) {
1415             opt.nss_keylog = atoi(q);
1416             if (opt.nss_keylog < 0 || opt.nss_keylog > 1) {
1417                 goto usage;
1418             }
1419         } else if (strcmp(p, "nss_keylog_file") == 0) {
1420             opt.nss_keylog_file = q;
1421         } else if (strcmp(p, "skip_close_notify") == 0) {
1422             opt.skip_close_notify = atoi(q);
1423             if (opt.skip_close_notify < 0 || opt.skip_close_notify > 1) {
1424                 goto usage;
1425             }
1426         } else if (strcmp(p, "use_srtp") == 0) {
1427             opt.use_srtp = atoi(q);
1428         } else if (strcmp(p, "srtp_force_profile") == 0) {
1429             opt.force_srtp_profile = atoi(q);
1430         } else if (strcmp(p, "mki") == 0) {
1431             opt.mki = q;
1432         } else if (strcmp(p, "key_opaque_algs") == 0) {
1433             if (key_opaque_alg_parse(q, &opt.key_opaque_alg1,
1434                                      &opt.key_opaque_alg2) != 0) {
1435                 goto usage;
1436             }
1437         } else {
1438             /* This signals that the problem is with p not q */
1439             q = NULL;
1440             goto usage;
1441         }
1442     }
1443     /* This signals that any further errors are not with a single option */
1444     p = q = NULL;
1445 
1446     if (opt.nss_keylog != 0 && opt.eap_tls != 0) {
1447         mbedtls_printf("Error: eap_tls and nss_keylog options cannot be used together.\n");
1448         goto usage;
1449     }
1450 
1451     /* Event-driven IO is incompatible with the above custom
1452      * receive and send functions, as the polling builds on
1453      * refers to the underlying net_context. */
1454     if (opt.event == 1 && opt.nbio != 1) {
1455         mbedtls_printf("Warning: event-driven IO mandates nbio=1 - overwrite\n");
1456         opt.nbio = 1;
1457     }
1458 
1459 #if defined(MBEDTLS_DEBUG_C)
1460     mbedtls_debug_set_threshold(opt.debug_level);
1461 #endif
1462 
1463 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_PSK_ENABLED)
1464     /*
1465      * Unhexify the pre-shared key if any is given
1466      */
1467     if (strlen(opt.psk)) {
1468         if (mbedtls_test_unhexify(psk, sizeof(psk),
1469                                   opt.psk, &psk_len) != 0) {
1470             mbedtls_printf("pre-shared key not valid\n");
1471             goto exit;
1472         }
1473     }
1474 #endif /* MBEDTLS_SSL_HANDSHAKE_WITH_PSK_ENABLED */
1475 
1476 #if defined(MBEDTLS_USE_PSA_CRYPTO)
1477     if (opt.psk_opaque != 0) {
1478         if (opt.psk == NULL) {
1479             mbedtls_printf("psk_opaque set but no psk to be imported specified.\n");
1480             ret = 2;
1481             goto usage;
1482         }
1483 
1484         if (opt.force_ciphersuite[0] <= 0) {
1485             mbedtls_printf(
1486                 "opaque PSKs are only supported in conjunction with forcing TLS 1.2 and a PSK-only ciphersuite through the 'force_ciphersuite' option.\n");
1487             ret = 2;
1488             goto usage;
1489         }
1490     }
1491 #endif /* MBEDTLS_USE_PSA_CRYPTO */
1492 
1493     if (opt.force_ciphersuite[0] > 0) {
1494         const mbedtls_ssl_ciphersuite_t *ciphersuite_info;
1495         ciphersuite_info =
1496             mbedtls_ssl_ciphersuite_from_id(opt.force_ciphersuite[0]);
1497 
1498         if (opt.max_version != -1 &&
1499             ciphersuite_info->min_tls_version > opt.max_version) {
1500             mbedtls_printf("forced ciphersuite not allowed with this protocol version\n");
1501             ret = 2;
1502             goto usage;
1503         }
1504         if (opt.min_version != -1 &&
1505             ciphersuite_info->max_tls_version < opt.min_version) {
1506             mbedtls_printf("forced ciphersuite not allowed with this protocol version\n");
1507             ret = 2;
1508             goto usage;
1509         }
1510 
1511         /* If the server selects a version that's not supported by
1512          * this suite, then there will be no common ciphersuite... */
1513         if (opt.max_version == -1 ||
1514             opt.max_version > ciphersuite_info->max_tls_version) {
1515             opt.max_version = ciphersuite_info->max_tls_version;
1516         }
1517         if (opt.min_version < ciphersuite_info->min_tls_version) {
1518             opt.min_version = ciphersuite_info->min_tls_version;
1519             /* DTLS starts with TLS 1.2 */
1520             if (opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
1521                 opt.min_version < MBEDTLS_SSL_VERSION_TLS1_2) {
1522                 opt.min_version = MBEDTLS_SSL_VERSION_TLS1_2;
1523             }
1524         }
1525 
1526 #if defined(MBEDTLS_USE_PSA_CRYPTO)
1527 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_PSK_ENABLED)
1528         if (opt.psk_opaque != 0) {
1529             /* Determine KDF algorithm the opaque PSK will be used in. */
1530 #if defined(MBEDTLS_MD_CAN_SHA384)
1531             if (ciphersuite_info->mac == MBEDTLS_MD_SHA384) {
1532                 alg = PSA_ALG_TLS12_PSK_TO_MS(PSA_ALG_SHA_384);
1533             } else
1534 #endif /* MBEDTLS_MD_CAN_SHA384 */
1535             alg = PSA_ALG_TLS12_PSK_TO_MS(PSA_ALG_SHA_256);
1536         }
1537 #endif /* MBEDTLS_SSL_HANDSHAKE_WITH_PSK_ENABLED */
1538 #endif /* MBEDTLS_USE_PSA_CRYPTO */
1539     }
1540 
1541 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
1542     if (mbedtls_test_unhexify(cid, sizeof(cid),
1543                               opt.cid_val, &cid_len) != 0) {
1544         mbedtls_printf("CID not valid\n");
1545         goto exit;
1546     }
1547 
1548     /* Keep CID settings for renegotiation unless
1549      * specified otherwise. */
1550     if (opt.cid_enabled_renego == DFL_CID_ENABLED_RENEGO) {
1551         opt.cid_enabled_renego = opt.cid_enabled;
1552     }
1553     if (opt.cid_val_renego == DFL_CID_VALUE_RENEGO) {
1554         opt.cid_val_renego = opt.cid_val;
1555     }
1556 
1557     if (mbedtls_test_unhexify(cid_renego, sizeof(cid_renego),
1558                               opt.cid_val_renego, &cid_renego_len) != 0) {
1559         mbedtls_printf("CID not valid\n");
1560         goto exit;
1561     }
1562 #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
1563 
1564     if (opt.groups != NULL) {
1565         if (parse_groups(opt.groups, group_list, GROUP_LIST_SIZE) != 0) {
1566             goto exit;
1567         }
1568     }
1569 
1570 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
1571     if (opt.sig_algs != NULL) {
1572         p = (char *) opt.sig_algs;
1573         i = 0;
1574 
1575         /* Leave room for a final MBEDTLS_TLS1_3_SIG_NONE in signature algorithm list (sig_alg_list). */
1576         while (i < SIG_ALG_LIST_SIZE - 1 && *p != '\0') {
1577             q = p;
1578 
1579             /* Terminate the current string */
1580             while (*p != ',' && *p != '\0') {
1581                 p++;
1582             }
1583             if (*p == ',') {
1584                 *p++ = '\0';
1585             }
1586 
1587             if (strcmp(q, "rsa_pkcs1_sha256") == 0) {
1588                 sig_alg_list[i++] = MBEDTLS_TLS1_3_SIG_RSA_PKCS1_SHA256;
1589             } else if (strcmp(q, "rsa_pkcs1_sha384") == 0) {
1590                 sig_alg_list[i++] = MBEDTLS_TLS1_3_SIG_RSA_PKCS1_SHA384;
1591             } else if (strcmp(q, "rsa_pkcs1_sha512") == 0) {
1592                 sig_alg_list[i++] = MBEDTLS_TLS1_3_SIG_RSA_PKCS1_SHA512;
1593             } else if (strcmp(q, "ecdsa_secp256r1_sha256") == 0) {
1594                 sig_alg_list[i++] = MBEDTLS_TLS1_3_SIG_ECDSA_SECP256R1_SHA256;
1595             } else if (strcmp(q, "ecdsa_secp384r1_sha384") == 0) {
1596                 sig_alg_list[i++] = MBEDTLS_TLS1_3_SIG_ECDSA_SECP384R1_SHA384;
1597             } else if (strcmp(q, "ecdsa_secp521r1_sha512") == 0) {
1598                 sig_alg_list[i++] = MBEDTLS_TLS1_3_SIG_ECDSA_SECP521R1_SHA512;
1599             } else if (strcmp(q, "rsa_pss_rsae_sha256") == 0) {
1600                 sig_alg_list[i++] = MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA256;
1601             } else if (strcmp(q, "rsa_pss_rsae_sha384") == 0) {
1602                 sig_alg_list[i++] = MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA384;
1603             } else if (strcmp(q, "rsa_pss_rsae_sha512") == 0) {
1604                 sig_alg_list[i++] = MBEDTLS_TLS1_3_SIG_RSA_PSS_RSAE_SHA512;
1605             } else if (strcmp(q, "ed25519") == 0) {
1606                 sig_alg_list[i++] = MBEDTLS_TLS1_3_SIG_ED25519;
1607             } else if (strcmp(q, "ed448") == 0) {
1608                 sig_alg_list[i++] = MBEDTLS_TLS1_3_SIG_ED448;
1609             } else if (strcmp(q, "rsa_pss_pss_sha256") == 0) {
1610                 sig_alg_list[i++] = MBEDTLS_TLS1_3_SIG_RSA_PSS_PSS_SHA256;
1611             } else if (strcmp(q, "rsa_pss_pss_sha384") == 0) {
1612                 sig_alg_list[i++] = MBEDTLS_TLS1_3_SIG_RSA_PSS_PSS_SHA384;
1613             } else if (strcmp(q, "rsa_pss_pss_sha512") == 0) {
1614                 sig_alg_list[i++] = MBEDTLS_TLS1_3_SIG_RSA_PSS_PSS_SHA512;
1615             } else if (strcmp(q, "rsa_pkcs1_sha1") == 0) {
1616                 sig_alg_list[i++] = MBEDTLS_TLS1_3_SIG_RSA_PKCS1_SHA1;
1617             } else if (strcmp(q, "ecdsa_sha1") == 0) {
1618                 sig_alg_list[i++] = MBEDTLS_TLS1_3_SIG_ECDSA_SHA1;
1619             } else {
1620                 ret = -1;
1621                 mbedtls_printf("unknown signature algorithm \"%s\"\n", q);
1622                 mbedtls_print_supported_sig_algs();
1623                 goto exit;
1624             }
1625         }
1626 
1627         if (i == (SIG_ALG_LIST_SIZE - 1) && *p != '\0') {
1628             mbedtls_printf("signature algorithm list too long, maximum %d",
1629                            SIG_ALG_LIST_SIZE - 1);
1630             goto exit;
1631         }
1632 
1633         sig_alg_list[i] = MBEDTLS_TLS1_3_SIG_NONE;
1634     }
1635 #endif /* MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED */
1636 
1637 #if defined(MBEDTLS_SSL_ALPN)
1638     if (opt.alpn_string != NULL) {
1639         p = (char *) opt.alpn_string;
1640         i = 0;
1641 
1642         /* Leave room for a final NULL in alpn_list */
1643         while (i < ALPN_LIST_SIZE - 1 && *p != '\0') {
1644             alpn_list[i++] = p;
1645 
1646             /* Terminate the current string and move on to next one */
1647             while (*p != ',' && *p != '\0') {
1648                 p++;
1649             }
1650             if (*p == ',') {
1651                 *p++ = '\0';
1652             }
1653         }
1654     }
1655 #endif /* MBEDTLS_SSL_ALPN */
1656 
1657     mbedtls_printf("build version: %s (build %d)\n",
1658                    MBEDTLS_VERSION_STRING_FULL, MBEDTLS_VERSION_NUMBER);
1659 
1660     /*
1661      * 0. Initialize the RNG and the session data
1662      */
1663     mbedtls_printf("\n  . Seeding the random number generator...");
1664     fflush(stdout);
1665 
1666     ret = rng_seed(&rng, opt.reproducible, pers);
1667     if (ret != 0) {
1668         goto exit;
1669     }
1670     mbedtls_printf(" ok\n");
1671 
1672 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
1673     /*
1674      * 1.1. Load the trusted CA
1675      */
1676     mbedtls_printf("  . Loading the CA root certificate ...");
1677     fflush(stdout);
1678 
1679     if (strcmp(opt.ca_path, "none") == 0 ||
1680         strcmp(opt.ca_file, "none") == 0) {
1681         ret = 0;
1682     } else
1683 #if defined(MBEDTLS_FS_IO)
1684     if (strlen(opt.ca_path)) {
1685         ret = mbedtls_x509_crt_parse_path(&cacert, opt.ca_path);
1686     } else if (strlen(opt.ca_file)) {
1687         ret = mbedtls_x509_crt_parse_file(&cacert, opt.ca_file);
1688     } else
1689 #endif
1690     {
1691 #if defined(MBEDTLS_PEM_PARSE_C)
1692         for (i = 0; mbedtls_test_cas[i] != NULL; i++) {
1693             ret = mbedtls_x509_crt_parse(&cacert,
1694                                          (const unsigned char *) mbedtls_test_cas[i],
1695                                          mbedtls_test_cas_len[i]);
1696             if (ret != 0) {
1697                 break;
1698             }
1699         }
1700 #endif /* MBEDTLS_PEM_PARSE_C */
1701         if (ret == 0) {
1702             for (i = 0; mbedtls_test_cas_der[i] != NULL; i++) {
1703                 ret = mbedtls_x509_crt_parse_der(&cacert,
1704                                                  (const unsigned char *) mbedtls_test_cas_der[i],
1705                                                  mbedtls_test_cas_der_len[i]);
1706                 if (ret != 0) {
1707                     break;
1708                 }
1709             }
1710         }
1711     }
1712     if (ret < 0) {
1713         mbedtls_printf(" failed\n  !  mbedtls_x509_crt_parse returned -0x%x\n\n",
1714                        (unsigned int) -ret);
1715         goto exit;
1716     }
1717 
1718     mbedtls_printf(" ok (%d skipped)\n", ret);
1719 
1720     /*
1721      * 1.2. Load own certificate and private key
1722      *
1723      * (can be skipped if client authentication is not required)
1724      */
1725     mbedtls_printf("  . Loading the client cert. and key...");
1726     fflush(stdout);
1727 
1728     if (strcmp(opt.crt_file, "none") == 0) {
1729         ret = 0;
1730     } else
1731 #if defined(MBEDTLS_FS_IO)
1732     if (strlen(opt.crt_file)) {
1733         ret = mbedtls_x509_crt_parse_file(&clicert, opt.crt_file);
1734     } else
1735 #endif
1736     { ret = mbedtls_x509_crt_parse(&clicert,
1737                                    (const unsigned char *) mbedtls_test_cli_crt,
1738                                    mbedtls_test_cli_crt_len); }
1739     if (ret != 0) {
1740         mbedtls_printf(" failed\n  !  mbedtls_x509_crt_parse returned -0x%x\n\n",
1741                        (unsigned int) -ret);
1742         goto exit;
1743     }
1744 
1745     if (strcmp(opt.key_file, "none") == 0) {
1746         ret = 0;
1747     } else
1748 #if defined(MBEDTLS_FS_IO)
1749     if (strlen(opt.key_file)) {
1750         ret = mbedtls_pk_parse_keyfile(&pkey, opt.key_file, opt.key_pwd, rng_get, &rng);
1751     } else
1752 #endif
1753     { ret = mbedtls_pk_parse_key(&pkey,
1754                                  (const unsigned char *) mbedtls_test_cli_key,
1755                                  mbedtls_test_cli_key_len, NULL, 0, rng_get, &rng); }
1756     if (ret != 0) {
1757         mbedtls_printf(" failed\n  !  mbedtls_pk_parse_key returned -0x%x\n\n",
1758                        (unsigned int) -ret);
1759         goto exit;
1760     }
1761 
1762 #if defined(MBEDTLS_USE_PSA_CRYPTO)
1763     if (opt.key_opaque != 0) {
1764         psa_algorithm_t psa_alg, psa_alg2 = PSA_ALG_NONE;
1765         psa_key_usage_t usage = 0;
1766 
1767         if (key_opaque_set_alg_usage(opt.key_opaque_alg1,
1768                                      opt.key_opaque_alg2,
1769                                      &psa_alg, &psa_alg2,
1770                                      &usage,
1771                                      mbedtls_pk_get_type(&pkey)) == 0) {
1772             ret = pk_wrap_as_opaque(&pkey, psa_alg, psa_alg2, usage, &key_slot);
1773             if (ret != 0) {
1774                 mbedtls_printf(" failed\n  !  "
1775                                "mbedtls_pk_get_psa_attributes returned -0x%x\n\n",
1776                                (unsigned int)  -ret);
1777                 goto exit;
1778             }
1779         }
1780     }
1781 #endif /* MBEDTLS_USE_PSA_CRYPTO */
1782 
1783     mbedtls_printf(" ok (key type: %s)\n",
1784                    strlen(opt.key_file) || strlen(opt.key_opaque_alg1) ?
1785                    mbedtls_pk_get_name(&pkey) : "none");
1786 #endif /* MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED */
1787 
1788     /*
1789      * 2. Setup stuff
1790      */
1791     mbedtls_printf("  . Setting up the SSL/TLS structure...");
1792     fflush(stdout);
1793 
1794     if ((ret = mbedtls_ssl_config_defaults(&conf,
1795                                            MBEDTLS_SSL_IS_CLIENT,
1796                                            opt.transport,
1797                                            MBEDTLS_SSL_PRESET_DEFAULT)) != 0) {
1798         mbedtls_printf(" failed\n  ! mbedtls_ssl_config_defaults returned -0x%x\n\n",
1799                        (unsigned int) -ret);
1800         goto exit;
1801     }
1802 
1803 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
1804     /* The default algorithms profile disables SHA-1, but our tests still
1805        rely on it heavily. */
1806     if (opt.allow_sha1 > 0) {
1807         crt_profile_for_test.allowed_mds |= MBEDTLS_X509_ID_FLAG(MBEDTLS_MD_SHA1);
1808         mbedtls_ssl_conf_cert_profile(&conf, &crt_profile_for_test);
1809         mbedtls_ssl_conf_sig_algs(&conf, ssl_sig_algs_for_test);
1810     }
1811     if (opt.context_crt_cb == 0) {
1812         mbedtls_ssl_conf_verify(&conf, my_verify, NULL);
1813     }
1814 
1815     memset(peer_crt_info, 0, sizeof(peer_crt_info));
1816 #endif /* MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED */
1817 
1818 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
1819     if (opt.cid_enabled == 1 || opt.cid_enabled_renego == 1) {
1820         if (opt.cid_enabled == 1        &&
1821             opt.cid_enabled_renego == 1 &&
1822             cid_len != cid_renego_len) {
1823             mbedtls_printf("CID length must not change during renegotiation\n");
1824             goto usage;
1825         }
1826 
1827         if (opt.cid_enabled == 1) {
1828             ret = mbedtls_ssl_conf_cid(&conf, cid_len,
1829                                        MBEDTLS_SSL_UNEXPECTED_CID_IGNORE);
1830         } else {
1831             ret = mbedtls_ssl_conf_cid(&conf, cid_renego_len,
1832                                        MBEDTLS_SSL_UNEXPECTED_CID_IGNORE);
1833         }
1834 
1835         if (ret != 0) {
1836             mbedtls_printf(" failed\n  ! mbedtls_ssl_conf_cid_len returned -%#04x\n\n",
1837                            (unsigned int) -ret);
1838             goto exit;
1839         }
1840     }
1841 #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
1842 
1843     if (opt.auth_mode != DFL_AUTH_MODE) {
1844         mbedtls_ssl_conf_authmode(&conf, opt.auth_mode);
1845     }
1846 
1847 #if defined(MBEDTLS_SSL_PROTO_DTLS)
1848     if (opt.hs_to_min != DFL_HS_TO_MIN || opt.hs_to_max != DFL_HS_TO_MAX) {
1849         mbedtls_ssl_conf_handshake_timeout(&conf, opt.hs_to_min,
1850                                            opt.hs_to_max);
1851     }
1852 
1853     if (opt.dgram_packing != DFL_DGRAM_PACKING) {
1854         mbedtls_ssl_set_datagram_packing(&ssl, opt.dgram_packing);
1855     }
1856 #endif /* MBEDTLS_SSL_PROTO_DTLS */
1857 
1858 #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
1859     if ((ret = mbedtls_ssl_conf_max_frag_len(&conf, opt.mfl_code)) != 0) {
1860         mbedtls_printf(" failed\n  ! mbedtls_ssl_conf_max_frag_len returned %d\n\n",
1861                        ret);
1862         goto exit;
1863     }
1864 #endif
1865 
1866 #if defined(MBEDTLS_SSL_DTLS_SRTP)
1867     const mbedtls_ssl_srtp_profile forced_profile[] =
1868     { opt.force_srtp_profile, MBEDTLS_TLS_SRTP_UNSET };
1869     if (opt.use_srtp == 1) {
1870         if (opt.force_srtp_profile != 0) {
1871             ret = mbedtls_ssl_conf_dtls_srtp_protection_profiles(&conf, forced_profile);
1872         } else {
1873             ret = mbedtls_ssl_conf_dtls_srtp_protection_profiles(&conf, default_profiles);
1874         }
1875 
1876         if (ret != 0) {
1877             mbedtls_printf(" failed\n  ! "
1878                            "mbedtls_ssl_conf_dtls_srtp_protection_profiles returned %d\n\n",
1879                            ret);
1880             goto exit;
1881         }
1882 
1883     } else if (opt.force_srtp_profile != 0) {
1884         mbedtls_printf(" failed\n  ! must enable use_srtp to force srtp profile\n\n");
1885         goto exit;
1886     }
1887 #endif /* MBEDTLS_SSL_DTLS_SRTP */
1888 
1889 #if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
1890     if (opt.extended_ms != DFL_EXTENDED_MS) {
1891         mbedtls_ssl_conf_extended_master_secret(&conf, opt.extended_ms);
1892     }
1893 #endif
1894 
1895 #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
1896     if (opt.etm != DFL_ETM) {
1897         mbedtls_ssl_conf_encrypt_then_mac(&conf, opt.etm);
1898     }
1899 #endif
1900 
1901 #if defined(MBEDTLS_DHM_C)
1902     if (opt.dhmlen != DFL_DHMLEN) {
1903         mbedtls_ssl_conf_dhm_min_bitlen(&conf, opt.dhmlen);
1904     }
1905 #endif
1906 
1907 #if defined(MBEDTLS_SSL_ALPN)
1908     if (opt.alpn_string != NULL) {
1909         if ((ret = mbedtls_ssl_conf_alpn_protocols(&conf, alpn_list)) != 0) {
1910             mbedtls_printf(" failed\n  ! mbedtls_ssl_conf_alpn_protocols returned %d\n\n",
1911                            ret);
1912             goto exit;
1913         }
1914     }
1915 #endif
1916 
1917     if (opt.reproducible) {
1918 #if defined(MBEDTLS_HAVE_TIME)
1919 #if defined(MBEDTLS_PLATFORM_TIME_ALT)
1920         mbedtls_platform_set_time(dummy_constant_time);
1921 #else
1922         fprintf(stderr, "Warning: reproducible option used without constant time\n");
1923 #endif
1924 #endif  /* MBEDTLS_HAVE_TIME */
1925     }
1926     mbedtls_ssl_conf_rng(&conf, rng_get, &rng);
1927     mbedtls_ssl_conf_dbg(&conf, my_debug, stdout);
1928 
1929     mbedtls_ssl_conf_read_timeout(&conf, opt.read_timeout);
1930 
1931 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
1932     mbedtls_ssl_conf_session_tickets(&conf, opt.tickets);
1933 #endif
1934 
1935     if (opt.force_ciphersuite[0] != DFL_FORCE_CIPHER) {
1936         mbedtls_ssl_conf_ciphersuites(&conf, opt.force_ciphersuite);
1937     }
1938 
1939 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
1940     mbedtls_ssl_conf_tls13_key_exchange_modes(&conf, opt.tls13_kex_modes);
1941 #endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
1942 
1943     if (opt.allow_legacy != DFL_ALLOW_LEGACY) {
1944         mbedtls_ssl_conf_legacy_renegotiation(&conf, opt.allow_legacy);
1945     }
1946 #if defined(MBEDTLS_SSL_RENEGOTIATION)
1947     mbedtls_ssl_conf_renegotiation(&conf, opt.renegotiation);
1948 #endif
1949 
1950 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
1951     if (strcmp(opt.ca_path, "none") != 0 &&
1952         strcmp(opt.ca_file, "none") != 0) {
1953 #if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
1954         if (opt.ca_callback != 0) {
1955             mbedtls_ssl_conf_ca_cb(&conf, ca_callback, &cacert);
1956         } else
1957 #endif
1958         mbedtls_ssl_conf_ca_chain(&conf, &cacert, NULL);
1959     }
1960     if (strcmp(opt.crt_file, "none") != 0 &&
1961         strcmp(opt.key_file, "none") != 0) {
1962         if ((ret = mbedtls_ssl_conf_own_cert(&conf, &clicert, &pkey)) != 0) {
1963             mbedtls_printf(" failed\n  ! mbedtls_ssl_conf_own_cert returned %d\n\n",
1964                            ret);
1965             goto exit;
1966         }
1967     }
1968 #endif  /* MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED */
1969 
1970 #if defined(MBEDTLS_PK_HAVE_ECC_KEYS) || \
1971     (defined(MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_SOME_EPHEMERAL_ENABLED) && \
1972     defined(PSA_WANT_ALG_FFDH))
1973     if (opt.groups != NULL &&
1974         strcmp(opt.groups, "default") != 0) {
1975         mbedtls_ssl_conf_groups(&conf, group_list);
1976     }
1977 #endif
1978 
1979 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
1980     if (opt.sig_algs != NULL) {
1981         mbedtls_ssl_conf_sig_algs(&conf, sig_alg_list);
1982     }
1983 #endif
1984 
1985 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_PSK_ENABLED)
1986 #if defined(MBEDTLS_USE_PSA_CRYPTO)
1987     if (opt.psk_opaque != 0) {
1988         key_attributes = psa_key_attributes_init();
1989         psa_set_key_usage_flags(&key_attributes, PSA_KEY_USAGE_DERIVE);
1990         psa_set_key_algorithm(&key_attributes, alg);
1991         psa_set_key_type(&key_attributes, PSA_KEY_TYPE_DERIVE);
1992 
1993         status = psa_import_key(&key_attributes, psk, psk_len, &slot);
1994         if (status != PSA_SUCCESS) {
1995             ret = MBEDTLS_ERR_SSL_HW_ACCEL_FAILED;
1996             goto exit;
1997         }
1998 
1999         if ((ret = mbedtls_ssl_conf_psk_opaque(&conf, slot,
2000                                                (const unsigned char *) opt.psk_identity,
2001                                                strlen(opt.psk_identity))) != 0) {
2002             mbedtls_printf(" failed\n  ! mbedtls_ssl_conf_psk_opaque returned %d\n\n",
2003                            ret);
2004             goto exit;
2005         }
2006     } else
2007 #endif /* MBEDTLS_USE_PSA_CRYPTO */
2008     if (psk_len > 0) {
2009         ret = mbedtls_ssl_conf_psk(&conf, psk, psk_len,
2010                                    (const unsigned char *) opt.psk_identity,
2011                                    strlen(opt.psk_identity));
2012         if (ret != 0) {
2013             mbedtls_printf(" failed\n  ! mbedtls_ssl_conf_psk returned %d\n\n", ret);
2014             goto exit;
2015         }
2016     }
2017 #endif /* MBEDTLS_SSL_HANDSHAKE_WITH_PSK_ENABLED */
2018 
2019     if (opt.min_version != DFL_MIN_VERSION) {
2020         mbedtls_ssl_conf_min_tls_version(&conf, opt.min_version);
2021     }
2022 
2023     if (opt.max_version != DFL_MAX_VERSION) {
2024         mbedtls_ssl_conf_max_tls_version(&conf, opt.max_version);
2025     }
2026 
2027 #if defined(MBEDTLS_SSL_EARLY_DATA)
2028     if (opt.early_data != DFL_EARLY_DATA) {
2029         mbedtls_ssl_conf_early_data(&conf, opt.early_data);
2030     }
2031 #endif /* MBEDTLS_SSL_EARLY_DATA */
2032 
2033     if ((ret = mbedtls_ssl_setup(&ssl, &conf)) != 0) {
2034         mbedtls_printf(" failed\n  ! mbedtls_ssl_setup returned -0x%x\n\n",
2035                        (unsigned int) -ret);
2036         goto exit;
2037     }
2038 
2039     if (opt.eap_tls != 0) {
2040         mbedtls_ssl_set_export_keys_cb(&ssl, eap_tls_key_derivation,
2041                                        &eap_tls_keying);
2042     } else if (opt.nss_keylog != 0) {
2043         mbedtls_ssl_set_export_keys_cb(&ssl,
2044                                        nss_keylog_export,
2045                                        NULL);
2046     }
2047 #if defined(MBEDTLS_SSL_DTLS_SRTP)
2048     else if (opt.use_srtp != 0) {
2049         mbedtls_ssl_set_export_keys_cb(&ssl, dtls_srtp_key_derivation,
2050                                        &dtls_srtp_keying);
2051     }
2052 #endif /* MBEDTLS_SSL_DTLS_SRTP */
2053 
2054 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
2055     if ((ret = mbedtls_ssl_set_hostname(&ssl, opt.server_name)) != 0) {
2056         mbedtls_printf(" failed\n  ! mbedtls_ssl_set_hostname returned %d\n\n",
2057                        ret);
2058         goto exit;
2059     }
2060 #endif
2061 
2062 #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
2063     if (opt.ecjpake_pw != DFL_ECJPAKE_PW) {
2064 #if defined(MBEDTLS_USE_PSA_CRYPTO)
2065         if (opt.ecjpake_pw_opaque != DFL_ECJPAKE_PW_OPAQUE) {
2066             psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
2067 
2068             psa_set_key_usage_flags(&attributes, PSA_KEY_USAGE_DERIVE);
2069             psa_set_key_algorithm(&attributes, PSA_ALG_JPAKE);
2070             psa_set_key_type(&attributes, PSA_KEY_TYPE_PASSWORD);
2071 
2072             status = psa_import_key(&attributes,
2073                                     (const unsigned char *) opt.ecjpake_pw,
2074                                     strlen(opt.ecjpake_pw),
2075                                     &ecjpake_pw_slot);
2076             if (status != PSA_SUCCESS) {
2077                 mbedtls_printf(" failed\n  ! psa_import_key returned %d\n\n",
2078                                status);
2079                 goto exit;
2080             }
2081             if ((ret = mbedtls_ssl_set_hs_ecjpake_password_opaque(&ssl,
2082                                                                   ecjpake_pw_slot)) != 0) {
2083                 mbedtls_printf(
2084                     " failed\n  ! mbedtls_ssl_set_hs_ecjpake_password_opaque returned %d\n\n",
2085                     ret);
2086                 goto exit;
2087             }
2088             mbedtls_printf("using opaque password\n");
2089         } else
2090 #endif  /* MBEDTLS_USE_PSA_CRYPTO */
2091         {
2092             if ((ret = mbedtls_ssl_set_hs_ecjpake_password(&ssl,
2093                                                            (const unsigned char *) opt.ecjpake_pw,
2094                                                            strlen(opt.ecjpake_pw))) != 0) {
2095                 mbedtls_printf(" failed\n  ! mbedtls_ssl_set_hs_ecjpake_password returned %d\n\n",
2096                                ret);
2097                 goto exit;
2098             }
2099         }
2100     }
2101 #endif /* MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
2102 
2103 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
2104     if (opt.context_crt_cb == 1) {
2105         mbedtls_ssl_set_verify(&ssl, my_verify, NULL);
2106     }
2107 #endif /* MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED */
2108 
2109     io_ctx.ssl = &ssl;
2110     io_ctx.net = &server_fd;
2111     mbedtls_ssl_set_bio(&ssl, &io_ctx, send_cb, recv_cb,
2112                         opt.nbio == 0 ? recv_timeout_cb : NULL);
2113 
2114 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
2115     if (opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM) {
2116         if ((ret = mbedtls_ssl_set_cid(&ssl, opt.cid_enabled,
2117                                        cid, cid_len)) != 0) {
2118             mbedtls_printf(" failed\n  ! mbedtls_ssl_set_cid returned %d\n\n",
2119                            ret);
2120             goto exit;
2121         }
2122     }
2123 #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
2124 
2125 #if defined(MBEDTLS_SSL_PROTO_DTLS)
2126     if (opt.dtls_mtu != DFL_DTLS_MTU) {
2127         mbedtls_ssl_set_mtu(&ssl, opt.dtls_mtu);
2128     }
2129 #endif
2130 
2131 #if defined(MBEDTLS_TIMING_C)
2132     mbedtls_ssl_set_timer_cb(&ssl, &timer, mbedtls_timing_set_delay,
2133                              mbedtls_timing_get_delay);
2134 #endif
2135 
2136 #if defined(MBEDTLS_ECP_RESTARTABLE)
2137     if (opt.ec_max_ops != DFL_EC_MAX_OPS) {
2138         mbedtls_ecp_set_max_ops(opt.ec_max_ops);
2139     }
2140 #endif
2141 
2142 #if defined(MBEDTLS_SSL_DTLS_SRTP)
2143     if (opt.use_srtp != 0 && strlen(opt.mki) != 0) {
2144         if (mbedtls_test_unhexify(mki, sizeof(mki),
2145                                   opt.mki, &mki_len) != 0) {
2146             mbedtls_printf("mki value not valid hex\n");
2147             goto exit;
2148         }
2149 
2150         mbedtls_ssl_conf_srtp_mki_value_supported(&conf, MBEDTLS_SSL_DTLS_SRTP_MKI_SUPPORTED);
2151         if ((ret = mbedtls_ssl_dtls_srtp_set_mki_value(&ssl, mki,
2152                                                        (uint16_t) strlen(opt.mki) / 2)) != 0) {
2153             mbedtls_printf(" failed\n  ! mbedtls_ssl_dtls_srtp_set_mki_value returned %d\n\n", ret);
2154             goto exit;
2155         }
2156     }
2157 #endif
2158 
2159     mbedtls_printf(" ok\n");
2160 
2161     /*
2162      * 3. Start the connection
2163      */
2164     if (opt.server_addr == NULL) {
2165         opt.server_addr = opt.server_name;
2166     }
2167 
2168     mbedtls_printf("  . Connecting to %s/%s/%s...",
2169                    opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM ? "tcp" : "udp",
2170                    opt.server_addr, opt.server_port);
2171     fflush(stdout);
2172 
2173     if ((ret = mbedtls_net_connect(&server_fd,
2174                                    opt.server_addr, opt.server_port,
2175                                    opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM ?
2176                                    MBEDTLS_NET_PROTO_TCP : MBEDTLS_NET_PROTO_UDP)) != 0) {
2177         mbedtls_printf(" failed\n  ! mbedtls_net_connect returned -0x%x\n\n",
2178                        (unsigned int) -ret);
2179         goto exit;
2180     }
2181 
2182     if (opt.nbio > 0) {
2183         ret = mbedtls_net_set_nonblock(&server_fd);
2184     } else {
2185         ret = mbedtls_net_set_block(&server_fd);
2186     }
2187     if (ret != 0) {
2188         mbedtls_printf(" failed\n  ! net_set_(non)block() returned -0x%x\n\n",
2189                        (unsigned int) -ret);
2190         goto exit;
2191     }
2192 
2193     mbedtls_printf(" ok\n");
2194 
2195     /*
2196      * 4. Handshake
2197      */
2198     mbedtls_printf("  . Performing the SSL/TLS handshake...");
2199     fflush(stdout);
2200 
2201     while ((ret = mbedtls_ssl_handshake(&ssl)) != 0) {
2202         if (ret != MBEDTLS_ERR_SSL_WANT_READ &&
2203             ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
2204             ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS) {
2205             mbedtls_printf(" failed\n  ! mbedtls_ssl_handshake returned -0x%x\n",
2206                            (unsigned int) -ret);
2207             if (ret == MBEDTLS_ERR_X509_CERT_VERIFY_FAILED) {
2208                 mbedtls_printf(
2209                     "    Unable to verify the server's certificate. "
2210                     "Either it is invalid,\n"
2211                     "    or you didn't set ca_file or ca_path "
2212                     "to an appropriate value.\n"
2213                     "    Alternatively, you may want to use "
2214                     "auth_mode=optional for testing purposes if "
2215                     "not using TLS 1.3.\n"
2216                     "    For TLS 1.3 server, try `ca_path=/etc/ssl/certs/`"
2217                     "or other folder that has root certificates\n");
2218             }
2219             mbedtls_printf("\n");
2220             goto exit;
2221         }
2222 
2223 #if defined(MBEDTLS_ECP_RESTARTABLE)
2224         if (ret == MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS) {
2225             continue;
2226         }
2227 #endif
2228 
2229         /* For event-driven IO, wait for socket to become available */
2230         if (opt.event == 1 /* level triggered IO */) {
2231 #if defined(MBEDTLS_TIMING_C)
2232             ret = idle(&server_fd, &timer, ret);
2233 #else
2234             ret = idle(&server_fd, ret);
2235 #endif
2236             if (ret != 0) {
2237                 goto exit;
2238             }
2239         }
2240     }
2241 
2242     {
2243         int suite_id = mbedtls_ssl_get_ciphersuite_id_from_ssl(&ssl);
2244         const mbedtls_ssl_ciphersuite_t *ciphersuite_info;
2245         ciphersuite_info = mbedtls_ssl_ciphersuite_from_id(suite_id);
2246 
2247         mbedtls_printf(" ok\n    [ Protocol is %s ]\n"
2248                        "    [ Ciphersuite is %s ]\n"
2249                        "    [ Key size is %u ]\n",
2250                        mbedtls_ssl_get_version(&ssl),
2251                        mbedtls_ssl_ciphersuite_get_name(ciphersuite_info),
2252                        (unsigned int)
2253                        mbedtls_ssl_ciphersuite_get_cipher_key_bitlen(ciphersuite_info));
2254     }
2255 
2256     if ((ret = mbedtls_ssl_get_record_expansion(&ssl)) >= 0) {
2257         mbedtls_printf("    [ Record expansion is %d ]\n", ret);
2258     } else {
2259         mbedtls_printf("    [ Record expansion is unknown ]\n");
2260     }
2261 
2262 #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
2263     mbedtls_printf("    [ Maximum incoming record payload length is %u ]\n",
2264                    (unsigned int) mbedtls_ssl_get_max_in_record_payload(&ssl));
2265     mbedtls_printf("    [ Maximum outgoing record payload length is %u ]\n",
2266                    (unsigned int) mbedtls_ssl_get_max_out_record_payload(&ssl));
2267 #endif
2268 
2269 #if defined(MBEDTLS_SSL_ALPN)
2270     if (opt.alpn_string != NULL) {
2271         const char *alp = mbedtls_ssl_get_alpn_protocol(&ssl);
2272         mbedtls_printf("    [ Application Layer Protocol is %s ]\n",
2273                        alp ? alp : "(none)");
2274     }
2275 #endif
2276 
2277     if (opt.eap_tls != 0) {
2278         size_t j = 0;
2279 
2280         if ((ret = mbedtls_ssl_tls_prf(eap_tls_keying.tls_prf_type,
2281                                        eap_tls_keying.master_secret,
2282                                        sizeof(eap_tls_keying.master_secret),
2283                                        eap_tls_label,
2284                                        eap_tls_keying.randbytes,
2285                                        sizeof(eap_tls_keying.randbytes),
2286                                        eap_tls_keymaterial,
2287                                        sizeof(eap_tls_keymaterial)))
2288             != 0) {
2289             mbedtls_printf(" failed\n  ! mbedtls_ssl_tls_prf returned -0x%x\n\n",
2290                            (unsigned int) -ret);
2291             goto exit;
2292         }
2293 
2294         mbedtls_printf("    EAP-TLS key material is:");
2295         for (j = 0; j < sizeof(eap_tls_keymaterial); j++) {
2296             if (j % 8 == 0) {
2297                 mbedtls_printf("\n    ");
2298             }
2299             mbedtls_printf("%02x ", eap_tls_keymaterial[j]);
2300         }
2301         mbedtls_printf("\n");
2302 
2303         if ((ret = mbedtls_ssl_tls_prf(eap_tls_keying.tls_prf_type, NULL, 0,
2304                                        eap_tls_label,
2305                                        eap_tls_keying.randbytes,
2306                                        sizeof(eap_tls_keying.randbytes),
2307                                        eap_tls_iv,
2308                                        sizeof(eap_tls_iv))) != 0) {
2309             mbedtls_printf(" failed\n  ! mbedtls_ssl_tls_prf returned -0x%x\n\n",
2310                            (unsigned int) -ret);
2311             goto exit;
2312         }
2313 
2314         mbedtls_printf("    EAP-TLS IV is:");
2315         for (j = 0; j < sizeof(eap_tls_iv); j++) {
2316             if (j % 8 == 0) {
2317                 mbedtls_printf("\n    ");
2318             }
2319             mbedtls_printf("%02x ", eap_tls_iv[j]);
2320         }
2321         mbedtls_printf("\n");
2322     }
2323 
2324 #if defined(MBEDTLS_SSL_DTLS_SRTP)
2325     else if (opt.use_srtp != 0) {
2326         size_t j = 0;
2327         mbedtls_dtls_srtp_info dtls_srtp_negotiation_result;
2328         mbedtls_ssl_get_dtls_srtp_negotiation_result(&ssl, &dtls_srtp_negotiation_result);
2329 
2330         if (dtls_srtp_negotiation_result.chosen_dtls_srtp_profile
2331             == MBEDTLS_TLS_SRTP_UNSET) {
2332             mbedtls_printf("    Unable to negotiate "
2333                            "the use of DTLS-SRTP\n");
2334         } else {
2335             if ((ret = mbedtls_ssl_tls_prf(dtls_srtp_keying.tls_prf_type,
2336                                            dtls_srtp_keying.master_secret,
2337                                            sizeof(dtls_srtp_keying.master_secret),
2338                                            dtls_srtp_label,
2339                                            dtls_srtp_keying.randbytes,
2340                                            sizeof(dtls_srtp_keying.randbytes),
2341                                            dtls_srtp_key_material,
2342                                            sizeof(dtls_srtp_key_material)))
2343                 != 0) {
2344                 mbedtls_printf(" failed\n  ! mbedtls_ssl_tls_prf returned -0x%x\n\n",
2345                                (unsigned int) -ret);
2346                 goto exit;
2347             }
2348 
2349             mbedtls_printf("    DTLS-SRTP key material is:");
2350             for (j = 0; j < sizeof(dtls_srtp_key_material); j++) {
2351                 if (j % 8 == 0) {
2352                     mbedtls_printf("\n    ");
2353                 }
2354                 mbedtls_printf("%02x ", dtls_srtp_key_material[j]);
2355             }
2356             mbedtls_printf("\n");
2357 
2358             /* produce a less readable output used to perform automatic checks
2359              * - compare client and server output
2360              * - interop test with openssl which client produces this kind of output
2361              */
2362             mbedtls_printf("    Keying material: ");
2363             for (j = 0; j < sizeof(dtls_srtp_key_material); j++) {
2364                 mbedtls_printf("%02X", dtls_srtp_key_material[j]);
2365             }
2366             mbedtls_printf("\n");
2367 
2368             if (dtls_srtp_negotiation_result.mki_len > 0) {
2369                 mbedtls_printf("    DTLS-SRTP mki value: ");
2370                 for (j = 0; j < dtls_srtp_negotiation_result.mki_len; j++) {
2371                     mbedtls_printf("%02X", dtls_srtp_negotiation_result.mki_value[j]);
2372                 }
2373             } else {
2374                 mbedtls_printf("    DTLS-SRTP no mki value negotiated");
2375             }
2376             mbedtls_printf("\n");
2377         }
2378     }
2379 #endif /* MBEDTLS_SSL_DTLS_SRTP */
2380     if (opt.reconnect != 0 && ssl.tls_version != MBEDTLS_SSL_VERSION_TLS1_3) {
2381         mbedtls_printf("  . Saving session for reuse...");
2382         fflush(stdout);
2383 
2384         if (opt.reco_mode == 1) {
2385             if ((ret = ssl_save_session_serialize(&ssl,
2386                                                   &session_data, &session_data_len)) != 0) {
2387                 mbedtls_printf(" failed\n  ! ssl_save_session_serialize returned -0x%04x\n\n",
2388                                (unsigned int) -ret);
2389                 goto exit;
2390             }
2391 
2392         } else {
2393             if ((ret = mbedtls_ssl_get_session(&ssl, &saved_session)) != 0) {
2394                 mbedtls_printf(" failed\n  ! mbedtls_ssl_get_session returned -0x%x\n\n",
2395                                (unsigned int) -ret);
2396                 goto exit;
2397             }
2398         }
2399 
2400         mbedtls_printf(" ok\n");
2401 
2402         if (opt.reco_mode == 1) {
2403             mbedtls_printf("    [ Saved %u bytes of session data]\n",
2404                            (unsigned) session_data_len);
2405         }
2406     }
2407 
2408 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
2409     /*
2410      * 5. Verify the server certificate
2411      */
2412     mbedtls_printf("  . Verifying peer X.509 certificate...");
2413 
2414     if ((flags = mbedtls_ssl_get_verify_result(&ssl)) != 0) {
2415         char vrfy_buf[512];
2416         mbedtls_printf(" failed\n");
2417 
2418         x509_crt_verify_info(vrfy_buf, sizeof(vrfy_buf),
2419                              "  ! ", flags);
2420 
2421         mbedtls_printf("%s\n", vrfy_buf);
2422     } else {
2423         mbedtls_printf(" ok\n");
2424     }
2425 
2426 #if !defined(MBEDTLS_X509_REMOVE_INFO)
2427     mbedtls_printf("  . Peer certificate information    ...\n");
2428     mbedtls_printf("%s\n", peer_crt_info);
2429 #endif /* !MBEDTLS_X509_REMOVE_INFO */
2430 #endif /* MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED */
2431 
2432 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
2433     ret = report_cid_usage(&ssl, "initial handshake");
2434     if (ret != 0) {
2435         goto exit;
2436     }
2437 
2438     if (opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM) {
2439         if ((ret = mbedtls_ssl_set_cid(&ssl, opt.cid_enabled_renego,
2440                                        cid_renego,
2441                                        cid_renego_len)) != 0) {
2442             mbedtls_printf(" failed\n  ! mbedtls_ssl_set_cid returned %d\n\n",
2443                            ret);
2444             goto exit;
2445         }
2446     }
2447 #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
2448 
2449 #if defined(MBEDTLS_SSL_RENEGOTIATION)
2450     if (opt.renegotiate) {
2451         /*
2452          * Perform renegotiation (this must be done when the server is waiting
2453          * for input from our side).
2454          */
2455         mbedtls_printf("  . Performing renegotiation...");
2456         fflush(stdout);
2457         while ((ret = mbedtls_ssl_renegotiate(&ssl)) != 0) {
2458             if (ret != MBEDTLS_ERR_SSL_WANT_READ &&
2459                 ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
2460                 ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS) {
2461                 mbedtls_printf(" failed\n  ! mbedtls_ssl_renegotiate returned %d\n\n",
2462                                ret);
2463                 goto exit;
2464             }
2465 
2466 #if defined(MBEDTLS_ECP_RESTARTABLE)
2467             if (ret == MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS) {
2468                 continue;
2469             }
2470 #endif
2471 
2472             /* For event-driven IO, wait for socket to become available */
2473             if (opt.event == 1 /* level triggered IO */) {
2474 #if defined(MBEDTLS_TIMING_C)
2475                 idle(&server_fd, &timer, ret);
2476 #else
2477                 idle(&server_fd, ret);
2478 #endif
2479             }
2480 
2481         }
2482         mbedtls_printf(" ok\n");
2483     }
2484 #endif /* MBEDTLS_SSL_RENEGOTIATION */
2485 
2486 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
2487     ret = report_cid_usage(&ssl, "after renegotiation");
2488     if (ret != 0) {
2489         goto exit;
2490     }
2491 #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
2492 
2493     /*
2494      * 6. Write the GET request
2495      */
2496     retry_left = opt.max_resend;
2497 send_request:
2498     mbedtls_printf("  > Write to server:");
2499     fflush(stdout);
2500 
2501     ret = build_http_request(buf, sizeof(buf) - 1, &len);
2502     if (ret != 0) {
2503         goto exit;
2504     }
2505 
2506     if (opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM) {
2507         written = 0;
2508         frags = 0;
2509 
2510         do {
2511             while ((ret = mbedtls_ssl_write(&ssl, buf + written,
2512                                             len - written)) < 0) {
2513                 if (ret != MBEDTLS_ERR_SSL_WANT_READ &&
2514                     ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
2515                     ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS) {
2516                     mbedtls_printf(" failed\n  ! mbedtls_ssl_write returned -0x%x\n\n",
2517                                    (unsigned int) -ret);
2518                     goto exit;
2519                 }
2520 
2521                 /* For event-driven IO, wait for socket to become available */
2522                 if (opt.event == 1 /* level triggered IO */) {
2523 #if defined(MBEDTLS_TIMING_C)
2524                     idle(&server_fd, &timer, ret);
2525 #else
2526                     idle(&server_fd, ret);
2527 #endif
2528                 }
2529             }
2530 
2531             frags++;
2532             written += ret;
2533         } while (written < len);
2534     } else { /* Not stream, so datagram */
2535         while (1) {
2536             ret = mbedtls_ssl_write(&ssl, buf, len);
2537 
2538 #if defined(MBEDTLS_ECP_RESTARTABLE)
2539             if (ret == MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS) {
2540                 continue;
2541             }
2542 #endif
2543 
2544             if (ret != MBEDTLS_ERR_SSL_WANT_READ &&
2545                 ret != MBEDTLS_ERR_SSL_WANT_WRITE) {
2546                 break;
2547             }
2548 
2549             /* For event-driven IO, wait for socket to become available */
2550             if (opt.event == 1 /* level triggered IO */) {
2551 #if defined(MBEDTLS_TIMING_C)
2552                 idle(&server_fd, &timer, ret);
2553 #else
2554                 idle(&server_fd, ret);
2555 #endif
2556             }
2557         }
2558 
2559         if (ret < 0) {
2560             mbedtls_printf(" failed\n  ! mbedtls_ssl_write returned %d\n\n",
2561                            ret);
2562             goto exit;
2563         }
2564 
2565         frags = 1;
2566         written = ret;
2567 
2568         if (written < len) {
2569             mbedtls_printf(" warning\n  ! request didn't fit into single datagram and "
2570                            "was truncated to size %u", (unsigned) written);
2571         }
2572     }
2573 
2574     buf[written] = '\0';
2575     mbedtls_printf(
2576         " %" MBEDTLS_PRINTF_SIZET " bytes written in %" MBEDTLS_PRINTF_SIZET " fragments\n\n%s\n",
2577         written,
2578         frags,
2579         (char *) buf);
2580 
2581     /* Send a non-empty request if request_size == 0 */
2582     if (len == 0) {
2583         opt.request_size = DFL_REQUEST_SIZE;
2584         goto send_request;
2585     }
2586 
2587     /*
2588      * 7. Read the HTTP response
2589      */
2590 
2591     /*
2592      * TLS and DTLS need different reading styles (stream vs datagram)
2593      */
2594     if (opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM) {
2595 #if defined(MBEDTLS_SSL_PROTO_TLS1_3) && defined(MBEDTLS_SSL_SESSION_TICKETS)
2596         int ticket_id = 0;
2597 #endif
2598         do {
2599             len = sizeof(buf) - 1;
2600             memset(buf, 0, sizeof(buf));
2601             ret = mbedtls_ssl_read(&ssl, buf, len);
2602 
2603 #if defined(MBEDTLS_ECP_RESTARTABLE)
2604             if (ret == MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS) {
2605                 continue;
2606             }
2607 #endif
2608 
2609             if (ret == MBEDTLS_ERR_SSL_WANT_READ ||
2610                 ret == MBEDTLS_ERR_SSL_WANT_WRITE) {
2611                 /* For event-driven IO, wait for socket to become available */
2612                 if (opt.event == 1 /* level triggered IO */) {
2613 #if defined(MBEDTLS_TIMING_C)
2614                     idle(&server_fd, &timer, ret);
2615 #else
2616                     idle(&server_fd, ret);
2617 #endif
2618                 }
2619                 continue;
2620             }
2621 
2622             if (ret <= 0) {
2623                 switch (ret) {
2624                     case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY:
2625                         mbedtls_printf(" connection was closed gracefully\n");
2626                         ret = 0;
2627                         goto close_notify;
2628 
2629                     case 0:
2630                     case MBEDTLS_ERR_NET_CONN_RESET:
2631                         mbedtls_printf(" connection was reset by peer\n");
2632                         ret = 0;
2633                         goto reconnect;
2634 
2635 #if defined(MBEDTLS_SSL_PROTO_TLS1_3)
2636 
2637 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
2638                     case MBEDTLS_ERR_SSL_RECEIVED_NEW_SESSION_TICKET:
2639                         /* We were waiting for application data but got
2640                          * a NewSessionTicket instead. */
2641                         mbedtls_printf(" got new session ticket ( %d ).\n",
2642                                        ticket_id++);
2643                         if (opt.reconnect != 0) {
2644                             mbedtls_printf("  . Saving session for reuse...");
2645                             fflush(stdout);
2646 
2647                             if (opt.reco_mode == 1) {
2648                                 if ((ret = ssl_save_session_serialize(&ssl,
2649                                                                       &session_data,
2650                                                                       &session_data_len)) != 0) {
2651                                     mbedtls_printf(
2652                                         " failed\n  ! ssl_save_session_serialize returned -0x%04x\n\n",
2653                                         (unsigned int) -ret);
2654                                     goto exit;
2655                                 }
2656                             } else {
2657                                 if ((ret = mbedtls_ssl_get_session(&ssl, &saved_session)) != 0) {
2658                                     mbedtls_printf(
2659                                         " failed\n  ! mbedtls_ssl_get_session returned -0x%x\n\n",
2660                                         (unsigned int) -ret);
2661                                     goto exit;
2662                                 }
2663                             }
2664 
2665                             mbedtls_printf(" ok\n");
2666 
2667                             if (opt.reco_mode == 1) {
2668                                 mbedtls_printf("    [ Saved %u bytes of session data]\n",
2669                                                (unsigned) session_data_len);
2670                             }
2671                         }
2672                         continue;
2673 #endif /* MBEDTLS_SSL_SESSION_TICKETS */
2674 
2675 #endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
2676 
2677                     default:
2678                         mbedtls_printf(" mbedtls_ssl_read returned -0x%x\n",
2679                                        (unsigned int) -ret);
2680                         goto exit;
2681                 }
2682             }
2683 
2684             len = ret;
2685             buf[len] = '\0';
2686             mbedtls_printf("  < Read from server: %" MBEDTLS_PRINTF_SIZET " bytes read\n\n%s",
2687                            len,
2688                            (char *) buf);
2689             fflush(stdout);
2690             /* End of message should be detected according to the syntax of the
2691              * application protocol (eg HTTP), just use a dummy test here. */
2692             if (ret > 0 && buf[len-1] == '\n') {
2693                 ret = 0;
2694                 break;
2695             }
2696         } while (1);
2697     } else { /* Not stream, so datagram */
2698         len = sizeof(buf) - 1;
2699         memset(buf, 0, sizeof(buf));
2700 
2701         while (1) {
2702             ret = mbedtls_ssl_read(&ssl, buf, len);
2703 
2704 #if defined(MBEDTLS_ECP_RESTARTABLE)
2705             if (ret == MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS) {
2706                 continue;
2707             }
2708 #endif
2709 
2710             if (ret != MBEDTLS_ERR_SSL_WANT_READ &&
2711                 ret != MBEDTLS_ERR_SSL_WANT_WRITE) {
2712                 break;
2713             }
2714 
2715             /* For event-driven IO, wait for socket to become available */
2716             if (opt.event == 1 /* level triggered IO */) {
2717 #if defined(MBEDTLS_TIMING_C)
2718                 idle(&server_fd, &timer, ret);
2719 #else
2720                 idle(&server_fd, ret);
2721 #endif
2722             }
2723         }
2724 
2725         if (ret <= 0) {
2726             switch (ret) {
2727                 case MBEDTLS_ERR_SSL_TIMEOUT:
2728                     mbedtls_printf(" timeout\n");
2729                     if (retry_left-- > 0) {
2730                         goto send_request;
2731                     }
2732                     goto exit;
2733 
2734                 case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY:
2735                     mbedtls_printf(" connection was closed gracefully\n");
2736                     ret = 0;
2737                     goto close_notify;
2738 
2739                 default:
2740                     mbedtls_printf(" mbedtls_ssl_read returned -0x%x\n", (unsigned int) -ret);
2741                     goto exit;
2742             }
2743         }
2744 
2745         len = ret;
2746         buf[len] = '\0';
2747         mbedtls_printf("  < Read from server: %" MBEDTLS_PRINTF_SIZET " bytes read\n\n%s",
2748                        len,
2749                        (char *) buf);
2750         ret = 0;
2751     }
2752 
2753     /*
2754      * 7b. Simulate hard reset and reconnect from same port?
2755      */
2756     if (opt.reconnect_hard != 0) {
2757         opt.reconnect_hard = 0;
2758 
2759         mbedtls_printf("  . Restarting connection from same port...");
2760         fflush(stdout);
2761 
2762 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
2763         memset(peer_crt_info, 0, sizeof(peer_crt_info));
2764 #endif /* MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED */
2765 
2766         if ((ret = mbedtls_ssl_session_reset(&ssl)) != 0) {
2767             mbedtls_printf(" failed\n  ! mbedtls_ssl_session_reset returned -0x%x\n\n",
2768                            (unsigned int) -ret);
2769             goto exit;
2770         }
2771 
2772         while ((ret = mbedtls_ssl_handshake(&ssl)) != 0) {
2773             if (ret != MBEDTLS_ERR_SSL_WANT_READ &&
2774                 ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
2775                 ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS) {
2776                 mbedtls_printf(" failed\n  ! mbedtls_ssl_handshake returned -0x%x\n\n",
2777                                (unsigned int) -ret);
2778                 goto exit;
2779             }
2780 
2781             /* For event-driven IO, wait for socket to become available */
2782             if (opt.event == 1 /* level triggered IO */) {
2783 #if defined(MBEDTLS_TIMING_C)
2784                 idle(&server_fd, &timer, ret);
2785 #else
2786                 idle(&server_fd, ret);
2787 #endif
2788             }
2789         }
2790 
2791         mbedtls_printf(" ok\n");
2792 
2793         goto send_request;
2794     }
2795 
2796     /*
2797      * 7c. Simulate serialize/deserialize and go back to data exchange
2798      */
2799 #if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION)
2800     if (opt.serialize != 0) {
2801         size_t buf_len;
2802 
2803         mbedtls_printf("  . Serializing live connection...");
2804 
2805         ret = mbedtls_ssl_context_save(&ssl, NULL, 0, &buf_len);
2806         if (ret != MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL) {
2807             mbedtls_printf(" failed\n  ! mbedtls_ssl_context_save returned "
2808                            "-0x%x\n\n", (unsigned int) -ret);
2809 
2810             goto exit;
2811         }
2812 
2813         if ((context_buf = mbedtls_calloc(1, buf_len)) == NULL) {
2814             mbedtls_printf(" failed\n  ! Couldn't allocate buffer for "
2815                            "serialized context");
2816 
2817             goto exit;
2818         }
2819         context_buf_len = buf_len;
2820 
2821         if ((ret = mbedtls_ssl_context_save(&ssl, context_buf,
2822                                             buf_len, &buf_len)) != 0) {
2823             mbedtls_printf(" failed\n  ! mbedtls_ssl_context_save returned "
2824                            "-0x%x\n\n", (unsigned int) -ret);
2825 
2826             goto exit;
2827         }
2828 
2829         mbedtls_printf(" ok\n");
2830 
2831         /* Save serialized context to the 'opt.context_file' as a base64 code */
2832         if (0 < strlen(opt.context_file)) {
2833             FILE *b64_file;
2834             uint8_t *b64_buf;
2835             size_t b64_len;
2836 
2837             mbedtls_printf("  . Save serialized context to a file... ");
2838 
2839             mbedtls_base64_encode(NULL, 0, &b64_len, context_buf, buf_len);
2840 
2841             if ((b64_buf = mbedtls_calloc(1, b64_len)) == NULL) {
2842                 mbedtls_printf("failed\n  ! Couldn't allocate buffer for "
2843                                "the base64 code\n");
2844                 goto exit;
2845             }
2846 
2847             if ((ret = mbedtls_base64_encode(b64_buf, b64_len, &b64_len,
2848                                              context_buf, buf_len)) != 0) {
2849                 mbedtls_printf("failed\n  ! mbedtls_base64_encode returned "
2850                                "-0x%x\n", (unsigned int) -ret);
2851                 mbedtls_free(b64_buf);
2852                 goto exit;
2853             }
2854 
2855             if ((b64_file = fopen(opt.context_file, "w")) == NULL) {
2856                 mbedtls_printf("failed\n  ! Cannot open '%s' for writing.\n",
2857                                opt.context_file);
2858                 mbedtls_free(b64_buf);
2859                 goto exit;
2860             }
2861 
2862             if (b64_len != fwrite(b64_buf, 1, b64_len, b64_file)) {
2863                 mbedtls_printf("failed\n  ! fwrite(%ld bytes) failed\n",
2864                                (long) b64_len);
2865                 mbedtls_free(b64_buf);
2866                 fclose(b64_file);
2867                 goto exit;
2868             }
2869 
2870             mbedtls_free(b64_buf);
2871             fclose(b64_file);
2872 
2873             mbedtls_printf("ok\n");
2874         }
2875 
2876         if (opt.serialize == 1) {
2877             /* nothing to do here, done by context_save() already */
2878             mbedtls_printf("  . Context has been reset... ok\n");
2879         }
2880 
2881         if (opt.serialize == 2) {
2882             mbedtls_printf("  . Freeing and reinitializing context...");
2883 
2884             mbedtls_ssl_free(&ssl);
2885 
2886             mbedtls_ssl_init(&ssl);
2887 
2888             if ((ret = mbedtls_ssl_setup(&ssl, &conf)) != 0) {
2889                 mbedtls_printf(" failed\n  ! mbedtls_ssl_setup returned "
2890                                "-0x%x\n\n", (unsigned int) -ret);
2891                 goto exit;
2892             }
2893 
2894             if (opt.nbio == 2) {
2895                 mbedtls_ssl_set_bio(&ssl, &server_fd, delayed_send,
2896                                     delayed_recv, NULL);
2897             } else {
2898                 mbedtls_ssl_set_bio(&ssl, &server_fd, mbedtls_net_send,
2899                                     mbedtls_net_recv,
2900                                     opt.nbio == 0 ? mbedtls_net_recv_timeout : NULL);
2901             }
2902 
2903 #if defined(MBEDTLS_TIMING_C)
2904             mbedtls_ssl_set_timer_cb(&ssl, &timer,
2905                                      mbedtls_timing_set_delay,
2906                                      mbedtls_timing_get_delay);
2907 #endif /* MBEDTLS_TIMING_C */
2908 
2909             mbedtls_printf(" ok\n");
2910         }
2911 
2912         mbedtls_printf("  . Deserializing connection...");
2913 
2914         if ((ret = mbedtls_ssl_context_load(&ssl, context_buf,
2915                                             buf_len)) != 0) {
2916             mbedtls_printf("failed\n  ! mbedtls_ssl_context_load returned "
2917                            "-0x%x\n\n", (unsigned int) -ret);
2918 
2919             goto exit;
2920         }
2921 
2922         mbedtls_free(context_buf);
2923         context_buf = NULL;
2924         context_buf_len = 0;
2925 
2926         mbedtls_printf(" ok\n");
2927     }
2928 #endif /* MBEDTLS_SSL_CONTEXT_SERIALIZATION */
2929 
2930     /*
2931      * 7d. Continue doing data exchanges?
2932      */
2933     if (--opt.exchanges > 0) {
2934         goto send_request;
2935     }
2936 
2937     /*
2938      * 8. Done, cleanly close the connection
2939      */
2940 close_notify:
2941     mbedtls_printf("  . Closing the connection...");
2942     fflush(stdout);
2943 
2944     /*
2945      * Most of the time sending a close_notify before closing is the right
2946      * thing to do. However, when the server already knows how many messages
2947      * are expected and closes the connection by itself, this alert becomes
2948      * redundant. Sometimes with DTLS this redundancy becomes a problem by
2949      * leading to a race condition where the server might close the connection
2950      * before seeing the alert, and since UDP is connection-less when the
2951      * alert arrives it will be seen as a new connection, which will fail as
2952      * the alert is clearly not a valid ClientHello. This may cause spurious
2953      * failures in tests that use DTLS and resumption with ssl_server2 in
2954      * ssl-opt.sh, avoided by enabling skip_close_notify client-side.
2955      */
2956     if (opt.skip_close_notify == 0) {
2957         /* No error checking, the connection might be closed already */
2958         do {
2959             ret = mbedtls_ssl_close_notify(&ssl);
2960         } while (ret == MBEDTLS_ERR_SSL_WANT_WRITE);
2961         ret = 0;
2962     }
2963 
2964     mbedtls_printf(" done\n");
2965 
2966     /*
2967      * 9. Reconnect?
2968      */
2969 reconnect:
2970     if (opt.reconnect != 0) {
2971         --opt.reconnect;
2972 
2973         mbedtls_net_free(&server_fd);
2974 
2975 #if defined(MBEDTLS_TIMING_C)
2976         if (opt.reco_delay > 0) {
2977             mbedtls_net_usleep(1000 * opt.reco_delay);
2978         }
2979 #endif
2980 
2981         mbedtls_printf("  . Reconnecting with saved session...");
2982 
2983 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
2984         memset(peer_crt_info, 0, sizeof(peer_crt_info));
2985 #endif /* MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED */
2986 
2987         if ((ret = mbedtls_ssl_session_reset(&ssl)) != 0) {
2988             mbedtls_printf(" failed\n  ! mbedtls_ssl_session_reset returned -0x%x\n\n",
2989                            (unsigned int) -ret);
2990             goto exit;
2991         }
2992 
2993         if (opt.reco_mode == 1) {
2994             if ((ret = mbedtls_ssl_session_load(&saved_session,
2995                                                 session_data,
2996                                                 session_data_len)) != 0) {
2997                 mbedtls_printf(" failed\n  ! mbedtls_ssl_session_load returned -0x%x\n\n",
2998                                (unsigned int) -ret);
2999                 goto exit;
3000             }
3001         }
3002 
3003         if ((ret = mbedtls_ssl_set_session(&ssl, &saved_session)) != 0) {
3004             mbedtls_printf(" failed\n  ! mbedtls_ssl_set_session returned -0x%x\n\n",
3005                            (unsigned int) -ret);
3006             goto exit;
3007         }
3008 
3009 #if defined(MBEDTLS_X509_CRT_PARSE_C)
3010         if (opt.reco_server_name != NULL &&
3011             (ret = mbedtls_ssl_set_hostname(&ssl,
3012                                             opt.reco_server_name)) != 0) {
3013             mbedtls_printf(" failed\n  ! mbedtls_ssl_set_hostname returned %d\n\n",
3014                            ret);
3015             goto exit;
3016         }
3017 #endif
3018 
3019         if ((ret = mbedtls_net_connect(&server_fd,
3020                                        opt.server_addr, opt.server_port,
3021                                        opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM ?
3022                                        MBEDTLS_NET_PROTO_TCP : MBEDTLS_NET_PROTO_UDP)) != 0) {
3023             mbedtls_printf(" failed\n  ! mbedtls_net_connect returned -0x%x\n\n",
3024                            (unsigned int) -ret);
3025             goto exit;
3026         }
3027 
3028         if (opt.nbio > 0) {
3029             ret = mbedtls_net_set_nonblock(&server_fd);
3030         } else {
3031             ret = mbedtls_net_set_block(&server_fd);
3032         }
3033         if (ret != 0) {
3034             mbedtls_printf(" failed\n  ! net_set_(non)block() returned -0x%x\n\n",
3035                            (unsigned int) -ret);
3036             goto exit;
3037         }
3038 
3039         ret = build_http_request(buf, sizeof(buf) - 1, &len);
3040         if (ret != 0) {
3041             goto exit;
3042         }
3043 
3044 #if defined(MBEDTLS_SSL_EARLY_DATA)
3045         if (ssl.conf->early_data_enabled == MBEDTLS_SSL_EARLY_DATA_ENABLED) {
3046             frags = 0;
3047             written = 0;
3048             do {
3049                 while ((ret = mbedtls_ssl_write_early_data(&ssl, buf + written,
3050                                                            len - written)) < 0) {
3051                     if (ret == MBEDTLS_ERR_SSL_CANNOT_WRITE_EARLY_DATA) {
3052                         goto end_of_early_data;
3053                     }
3054                     if (ret != MBEDTLS_ERR_SSL_WANT_READ &&
3055                         ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
3056                         ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS) {
3057                         mbedtls_printf(" failed\n  ! mbedtls_ssl_write returned -0x%x\n\n",
3058                                        (unsigned int) -ret);
3059                         goto exit;
3060                     }
3061 
3062                     /* For event-driven IO, wait for socket to become available */
3063                     if (opt.event == 1 /* level triggered IO */) {
3064 #if defined(MBEDTLS_TIMING_C)
3065                         idle(&server_fd, &timer, ret);
3066 #else
3067                         idle(&server_fd, ret);
3068 #endif
3069                     }
3070                 }
3071 
3072                 frags++;
3073                 written += ret;
3074             } while (written < len);
3075 
3076 end_of_early_data:
3077 
3078             buf[written] = '\0';
3079             mbedtls_printf(
3080                 " %" MBEDTLS_PRINTF_SIZET " bytes of early data written in %" MBEDTLS_PRINTF_SIZET " fragments\n\n%s\n",
3081                 written,
3082                 frags,
3083                 (char *) buf);
3084         }
3085 #endif /* MBEDTLS_SSL_EARLY_DATA */
3086 
3087         while ((ret = mbedtls_ssl_handshake(&ssl)) != 0) {
3088             if (ret != MBEDTLS_ERR_SSL_WANT_READ &&
3089                 ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
3090                 ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS) {
3091                 mbedtls_printf(" failed\n  ! mbedtls_ssl_handshake returned -0x%x\n\n",
3092                                (unsigned int) -ret);
3093                 goto exit;
3094             }
3095         }
3096 
3097         mbedtls_printf(" ok\n");
3098 
3099         goto send_request;
3100     }
3101 
3102     /*
3103      * Cleanup and exit
3104      */
3105 exit:
3106 #ifdef MBEDTLS_ERROR_C
3107     if (ret != 0) {
3108         char error_buf[100];
3109         mbedtls_strerror(ret, error_buf, 100);
3110         mbedtls_printf("Last error was: -0x%X - %s\n\n", (unsigned int) -ret, error_buf);
3111     }
3112 #endif
3113 
3114     mbedtls_net_free(&server_fd);
3115 
3116     mbedtls_ssl_free(&ssl);
3117     mbedtls_ssl_config_free(&conf);
3118     mbedtls_ssl_session_free(&saved_session);
3119 
3120     if (session_data != NULL) {
3121         mbedtls_platform_zeroize(session_data, session_data_len);
3122     }
3123     mbedtls_free(session_data);
3124 #if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION)
3125     if (context_buf != NULL) {
3126         mbedtls_platform_zeroize(context_buf, context_buf_len);
3127     }
3128     mbedtls_free(context_buf);
3129 #endif
3130 
3131 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED)
3132     mbedtls_x509_crt_free(&clicert);
3133     mbedtls_x509_crt_free(&cacert);
3134     mbedtls_pk_free(&pkey);
3135 #if defined(MBEDTLS_USE_PSA_CRYPTO)
3136     psa_destroy_key(key_slot);
3137 #endif
3138 #endif /* MBEDTLS_SSL_HANDSHAKE_WITH_CERT_ENABLED */
3139 
3140 #if defined(MBEDTLS_SSL_HANDSHAKE_WITH_PSK_ENABLED) && \
3141     defined(MBEDTLS_USE_PSA_CRYPTO)
3142     if (opt.psk_opaque != 0) {
3143         /* This is ok even if the slot hasn't been
3144          * initialized (we might have jumed here
3145          * immediately because of bad cmd line params,
3146          * for example). */
3147         status = psa_destroy_key(slot);
3148         if ((status != PSA_SUCCESS) &&
3149             (opt.query_config_mode == DFL_QUERY_CONFIG_MODE)) {
3150             mbedtls_printf("Failed to destroy key slot %u - error was %d",
3151                            (unsigned) MBEDTLS_SVC_KEY_ID_GET_KEY_ID(slot),
3152                            (int) status);
3153             if (ret == 0) {
3154                 ret = MBEDTLS_ERR_SSL_HW_ACCEL_FAILED;
3155             }
3156         }
3157     }
3158 #endif /* MBEDTLS_SSL_HANDSHAKE_WITH_PSK_ENABLED &&
3159           MBEDTLS_USE_PSA_CRYPTO */
3160 
3161 #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED) && \
3162     defined(MBEDTLS_USE_PSA_CRYPTO)
3163     /*
3164      * In case opaque keys it's the user responsibility to keep the key valid
3165      * for the duration of the handshake and destroy it at the end
3166      */
3167     if ((opt.ecjpake_pw_opaque != DFL_ECJPAKE_PW_OPAQUE)) {
3168         psa_key_attributes_t check_attributes = PSA_KEY_ATTRIBUTES_INIT;
3169 
3170         /* Verify that the key is still valid before destroying it */
3171         if (psa_get_key_attributes(ecjpake_pw_slot, &check_attributes) !=
3172             PSA_SUCCESS) {
3173             if (ret == 0) {
3174                 ret = 1;
3175             }
3176             mbedtls_printf("The EC J-PAKE password key has unexpectedly been already destroyed\n");
3177         } else {
3178             psa_destroy_key(ecjpake_pw_slot);
3179         }
3180     }
3181 #endif  /* MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED && MBEDTLS_USE_PSA_CRYPTO */
3182 
3183 #if defined(MBEDTLS_USE_PSA_CRYPTO) || defined(MBEDTLS_SSL_PROTO_TLS1_3)
3184     const char *message = mbedtls_test_helper_is_psa_leaking();
3185     if (message) {
3186         if (ret == 0) {
3187             ret = 1;
3188         }
3189         mbedtls_printf("PSA memory leak detected: %s\n",  message);
3190     }
3191 #endif /* MBEDTLS_USE_PSA_CRYPTO || MBEDTLS_SSL_PROTO_TLS1_3 */
3192 
3193     /* For builds with MBEDTLS_TEST_USE_PSA_CRYPTO_RNG psa crypto
3194      * resources are freed by rng_free(). */
3195 #if (defined(MBEDTLS_USE_PSA_CRYPTO) || defined(MBEDTLS_SSL_PROTO_TLS1_3)) && \
3196     !defined(MBEDTLS_TEST_USE_PSA_CRYPTO_RNG)
3197     mbedtls_psa_crypto_free();
3198 #endif
3199 
3200     rng_free(&rng);
3201 
3202 #if defined(MBEDTLS_TEST_HOOKS)
3203     if (test_hooks_failure_detected()) {
3204         if (ret == 0) {
3205             ret = 1;
3206         }
3207         mbedtls_printf("Test hooks detected errors.\n");
3208     }
3209     test_hooks_free();
3210 #endif /* MBEDTLS_TEST_HOOKS */
3211 
3212 #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
3213 #if defined(MBEDTLS_MEMORY_DEBUG)
3214     mbedtls_memory_buffer_alloc_status();
3215 #endif
3216     mbedtls_memory_buffer_alloc_free();
3217 #endif  /* MBEDTLS_MEMORY_BUFFER_ALLOC_C */
3218 
3219     // Shell can not handle large exit numbers -> 1 for errors
3220     if (ret < 0) {
3221         ret = 1;
3222     }
3223 
3224     if (opt.query_config_mode == DFL_QUERY_CONFIG_MODE) {
3225         mbedtls_exit(ret);
3226     } else {
3227         mbedtls_exit(query_config_ret);
3228     }
3229 }
3230 #endif /* !MBEDTLS_SSL_TEST_IMPOSSIBLE && MBEDTLS_SSL_CLI_C */
3231