[Openvpn-devel] [S] Change in openvpn[master]: Handle return type of EVP_MD_size

[flichtenheld (C. Review) <ge...@op...>]

Attention is currently required from: plaisthos.

Hello plaisthos,

I'd like you to do a code review.
Please visit

    http://gerrit.openvpn.net/c/openvpn/+/1133?usp=email

to review the following change.


Change subject: Handle return type of EVP_MD_size
......................................................................

Handle return type of EVP_MD_size

Return type is int, but we often use it in contexts
where we expect size_t. So just cast it. Nothing else
to do really.

Change-Id: I22b93c807f1be99fab450708f686fce4aa6d5cef
Signed-off-by: Frank Lichtenheld <fr...@li...>
---
M src/openvpn/crypto_openssl.c
M src/openvpn/ssl_verify_openssl.c
M src/openvpn/xkey_helper.c
3 files changed, 5 insertions(+), 5 deletions(-)



  git pull ssh://gerrit.openvpn.net:29418/openvpn refs/changes/33/1133/1

diff --git a/src/openvpn/crypto_openssl.c b/src/openvpn/crypto_openssl.c
index 4fb6393..2351bfd 100644
--- a/src/openvpn/crypto_openssl.c
+++ b/src/openvpn/crypto_openssl.c
@@ -1273,7 +1273,7 @@
 
     /* We need to make a copy of the key since the OSSL parameters
      * only reference it */
-    memcpy(ctx->key, key, EVP_MD_size(kt));
+    memcpy(ctx->key, key, (size_t)EVP_MD_size(kt));
 
     /* Lookup/setting of parameters in OpenSSL 3.0 are string based
      *
@@ -1282,7 +1282,7 @@
      * the constness away here.
      */
     ctx->params[0] = OSSL_PARAM_construct_utf8_string("digest", (char *)EVP_MD_get0_name(kt), 0);
-    ctx->params[1] = OSSL_PARAM_construct_octet_string("key", ctx->key, EVP_MD_size(kt));
+    ctx->params[1] = OSSL_PARAM_construct_octet_string("key", ctx->key, (size_t)EVP_MD_size(kt));
     ctx->params[2] = OSSL_PARAM_construct_end();
 
     if (!EVP_MAC_init(ctx->ctx, NULL, 0, ctx->params))
diff --git a/src/openvpn/ssl_verify_openssl.c b/src/openvpn/ssl_verify_openssl.c
index 1d83dfe..22659aa 100644
--- a/src/openvpn/ssl_verify_openssl.c
+++ b/src/openvpn/ssl_verify_openssl.c
@@ -341,7 +341,7 @@
 x509_get_sha1_fingerprint(X509 *cert, struct gc_arena *gc)
 {
     const EVP_MD *sha1 = EVP_sha1();
-    struct buffer hash = alloc_buf_gc(EVP_MD_size(sha1), gc);
+    struct buffer hash = alloc_buf_gc((size_t)EVP_MD_size(sha1), gc);
     X509_digest(cert, EVP_sha1(), BPTR(&hash), NULL);
     ASSERT(buf_inc_len(&hash, EVP_MD_size(sha1)));
     return hash;
@@ -351,7 +351,7 @@
 x509_get_sha256_fingerprint(X509 *cert, struct gc_arena *gc)
 {
     const EVP_MD *sha256 = EVP_sha256();
-    struct buffer hash = alloc_buf_gc(EVP_MD_size(sha256), gc);
+    struct buffer hash = alloc_buf_gc((size_t)EVP_MD_size(sha256), gc);
     X509_digest(cert, EVP_sha256(), BPTR(&hash), NULL);
     ASSERT(buf_inc_len(&hash, EVP_MD_size(sha256)));
     return hash;
diff --git a/src/openvpn/xkey_helper.c b/src/openvpn/xkey_helper.c
index 3820808..9541a7c 100644
--- a/src/openvpn/xkey_helper.c
+++ b/src/openvpn/xkey_helper.c
@@ -351,7 +351,7 @@
         }
     }
 
-    if (tbslen != EVP_MD_size(EVP_get_digestbyname(mdname)))
+    if (tbslen != (size_t)EVP_MD_size(EVP_get_digestbyname(mdname)))
     {
         msg(M_WARN, "Error: encode_pkcs11: invalid input length <%zu>", tbslen);
         goto done;

-- 
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Gerrit-Project: openvpn
Gerrit-Branch: master
Gerrit-Change-Id: I22b93c807f1be99fab450708f686fce4aa6d5cef
Gerrit-Change-Number: 1133
Gerrit-PatchSet: 1
Gerrit-Owner: flichtenheld <fr...@li...>
Gerrit-Reviewer: plaisthos <arn...@rf...>
Gerrit-CC: openvpn-devel <ope...@li...>
Gerrit-Attention: plaisthos <arn...@rf...>
Gerrit-MessageType: newchange