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      1 /*
      2  * Copyright 2016-2021 The OpenSSL Project Authors. All Rights Reserved.
      3  *
      4  * Licensed under the Apache License 2.0 (the "License").  You may not use
      5  * this file except in compliance with the License.  You can obtain a copy
      6  * in the file LICENSE in the source distribution or at
      7  * https://www.openssl.org/source/license.html
      8  */
      9 
     10 #include "internal/nelem.h"
     11 #include "testutil.h"
     12 #include "../ssl/ssl_local.h"
     13 
     14 static int cipher_enabled(const SSL_CIPHER *ciph)
     15 {
     16     /*
     17      * ssl_cipher_get_overhead() actually works with AEAD ciphers even if the
     18      * underlying implementation is not present.
     19      */
     20     if ((ciph->algorithm_mac & SSL_AEAD) != 0)
     21         return 1;
     22 
     23     if (ciph->algorithm_enc != SSL_eNULL
     24         && EVP_get_cipherbynid(SSL_CIPHER_get_cipher_nid(ciph)) == NULL)
     25         return 0;
     26 
     27     if (EVP_get_digestbynid(SSL_CIPHER_get_digest_nid(ciph)) == NULL)
     28         return 0;
     29 
     30     return 1;
     31 }
     32 
     33 static int cipher_overhead(void)
     34 {
     35     int ret = 1, i, n = ssl3_num_ciphers();
     36     const SSL_CIPHER *ciph;
     37     size_t mac, in, blk, ex;
     38 
     39     for (i = 0; i < n; i++) {
     40         ciph = ssl3_get_cipher(i);
     41         if (!ciph->min_dtls)
     42             continue;
     43         if (!cipher_enabled(ciph)) {
     44             TEST_skip("Skipping disabled cipher %s", ciph->name);
     45             continue;
     46         }
     47         if (!TEST_true(ssl_cipher_get_overhead(ciph, &mac, &in, &blk, &ex))) {
     48             TEST_info("Failed getting %s", ciph->name);
     49             ret = 0;
     50         } else {
     51             TEST_info("Cipher %s: %zu %zu %zu %zu",
     52                 ciph->name, mac, in, blk, ex);
     53         }
     54     }
     55     return ret;
     56 }
     57 
     58 int setup_tests(void)
     59 {
     60     ADD_TEST(cipher_overhead);
     61     return 1;
     62 }
     63