Re: [PATCH] selftests/sgx: Fix OpenSSL deprecated warning for ERR_get_error_line

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On 8/31/22 01:06, Jarkko Sakkinen wrote:
On Tue, Aug 30, 2022 at 11:18:03AM +0000, Dhanuka wrote:
On 8/30/22 02:52, Jarkko Sakkinen wrote:
On Mon, Aug 29, 2022 at 03:15:30PM +0300, Jarkko Sakkinen wrote:
On Sun, Aug 28, 2022 at 11:48:59AM +0530, Dhanuka Warusadura wrote:
These changes fix the "error: ‘ERR_get_error_line’ is deprecated:
Since OpenSSL 3.0" warning.

Signed-off-by: Dhanuka Warusadura <wdnuka@xxxxxxxxx>
---
   tools/testing/selftests/sgx/sigstruct.c | 2 +-
   1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/sgx/sigstruct.c b/tools/testing/selftests/sgx/sigstruct.c
index 50c5ab1aa6fa..671d9b58e274 100644
--- a/tools/testing/selftests/sgx/sigstruct.c
+++ b/tools/testing/selftests/sgx/sigstruct.c
@@ -136,7 +136,7 @@ static bool check_crypto_errors(void)
   			break;
   		had_errors = true;
-		err = ERR_get_error_line(&filename, &line);
+		err = ERR_peek_last_error_line(&filename, &line);
   		ERR_error_string_n(err, str, sizeof(str));
   		fprintf(stderr, "crypto: %s: %s:%d\n", str, filename, line);
   	}
--
2.37.2

Reviewed-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx>
Actually NAK.

This fix is not complete:

sigstruct.c: In function ‘get_modulus’:
sigstruct.c:151:9: error: ‘RSA_get0_key’ is deprecated: Since OpenSSL 3.0 [-Werror=deprecated-declarations]
    151 |         RSA_get0_key(key, &n, NULL, NULL);
        |         ^~~~~~~~~~~~
In file included from /usr/include/openssl/x509.h:36,
                   from /usr/include/openssl/pem.h:23,
                   from sigstruct.c:16:
/usr/include/openssl/rsa.h:217:28: note: declared here
    217 | OSSL_DEPRECATEDIN_3_0 void RSA_get0_key(const RSA *r,
        |                            ^~~~~~~~~~~~
sigstruct.c: In function ‘gen_sign_key’:
sigstruct.c:168:9: error: ‘PEM_read_bio_RSAPrivateKey’ is deprecated: Since OpenSSL 3.0 [-Werror=deprecated-declaration
]
    168 |         key = PEM_read_bio_RSAPrivateKey(bio, NULL, NULL, NULL);
        |         ^~~
/usr/include/openssl/pem.h:447:1: note: declared here
    447 | DECLARE_PEM_rw_cb_attr(OSSL_DEPRECATEDIN_3_0, RSAPrivateKey, RSA)
        | ^~~~~~~~~~~~~~~~~~~~~~
sigstruct.c: In function ‘encl_measure’:
sigstruct.c:364:9: error: ‘RSA_sign’ is deprecated: Since OpenSSL 3.0 [-Werror=deprecated-declarations]
    364 |         if (!RSA_sign(NID_sha256, digest, SHA256_DIGEST_LENGTH,
        |         ^~
/usr/include/openssl/rsa.h:348:27: note: declared here
    348 | OSSL_DEPRECATEDIN_3_0 int RSA_sign(int type, const unsigned char *m,
        |                           ^~~~~~~~
sigstruct.c:377:9: error: ‘RSA_free’ is deprecated: Since OpenSSL 3.0 [-Werror=deprecated-declarations]
    377 |         RSA_free(key);
        |         ^~~~~~~~
/usr/include/openssl/rsa.h:293:28: note: declared here
    293 | OSSL_DEPRECATEDIN_3_0 void RSA_free(RSA *r);
        |                            ^~~~~~~~
sigstruct.c:382:9: error: ‘RSA_free’ is deprecated: Since OpenSSL 3.0 [-Werror=deprecated-declarations]
    382 |         RSA_free(key);
        |         ^~~~~~~~
/usr/include/openssl/rsa.h:293:28: note: declared here
    293 | OSSL_DEPRECATEDIN_3_0 void RSA_free(RSA *r);
        |                            ^~~~~~~~
cc1: all warnings being treated as errors
make: *** [Makefile:39: /home/jarkko/work/linux-sgx/tools/testing/selftests/sgx/sigstruct.o] Error 1

BR, Jarkko
Thanks for the review.

But, my intention was to just fix the `ERR_get_error_line` deprecated
warning (as mentioned in the commit header) and not all the OpenSSL
deprecated warnings found in `sigstruct.c`

Do I need to fix all these OpenSSL deprecated warnings in `sigstruct.c` in
order to get this patch merged?
Yes, it is incomplete as it is.

BR, Jarkko

Understood. Will try to resolve the remaining deprecated warnings as well.

Thanks,
Dhanuka




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