Fix the cipher_overhead_test

Now that libssl no longer has any OPENSSL_NO_ALG guards the internal
cipher_overhead_test wasn't quite handling disabled ciphers correctly.

Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/13916)

1 files changed, 23 insertions, 0 deletions

diff --git a/test/cipher_overhead_test.c b/test/cipher_overhead_test.c
index 04be8d71cf..2231a215fd 100644
--- a/test/cipher_overhead_test.c
+++ b/test/cipher_overhead_test.c
@@ -11,6 +11,25 @@
 #include "testutil.h"
 #include "../ssl/ssl_local.h"
 
+static int cipher_enabled(const SSL_CIPHER *ciph)
+{
+    /*
+     * ssl_cipher_get_overhead() actually works with AEAD ciphers even if the
+     * underlying implementation is not present.
+     */
+    if ((ciph->algorithm_mac & SSL_AEAD) != 0)
+        return 1;
+
+    if (ciph->algorithm_enc != SSL_eNULL
+            && EVP_get_cipherbynid(SSL_CIPHER_get_cipher_nid(ciph)) == NULL)
+        return 0;
+
+    if (EVP_get_digestbynid(SSL_CIPHER_get_digest_nid(ciph)) == NULL)
+        return 0;
+
+    return 1;
+}
+
 static int cipher_overhead(void)
 {
     int ret = 1, i, n = ssl3_num_ciphers();
@@ -21,6 +40,10 @@ static int cipher_overhead(void)
         ciph = ssl3_get_cipher(i);
         if (!ciph->min_dtls)
             continue;
+        if (!cipher_enabled(ciph)) {
+            TEST_skip("Skipping disabled cipher %s", ciph->name);
+            continue;
+        }
         if (!TEST_true(ssl_cipher_get_overhead(ciph, &mac, &in, &blk, &ex))) {
             TEST_info("Failed getting %s", ciph->name);
             ret = 0;