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Hello plaisthos,

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

    http://gerrit.openvpn.net/c/openvpn/+/1446?usp=email

to review the following change.


Change subject: crypto_openssl: Fix various conversion warnings
......................................................................

crypto_openssl: Fix various conversion warnings

EVP_CIPHER_CTX_flags is documented to output
int on OpenSSL, but is actually unsigned long
OpenSSL 3.
On libressl it is correctly documented to output
unsigned long.

Change-Id: I99bc4692526f9143a913e29b266a1816295dfd51
Signed-off-by: Frank Lichtenheld <[email protected]>
---
M src/openvpn/crypto_openssl.c
1 file changed, 4 insertions(+), 13 deletions(-)



  git pull ssh://gerrit.openvpn.net:29418/openvpn refs/changes/46/1446/1

diff --git a/src/openvpn/crypto_openssl.c b/src/openvpn/crypto_openssl.c
index ec0269c..19359f3 100644
--- a/src/openvpn/crypto_openssl.c
+++ b/src/openvpn/crypto_openssl.c
@@ -896,11 +896,6 @@
     return EVP_CIPHER_CTX_mode(ctx);
 }

-#if defined(__GNUC__) || defined(__clang__)
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wconversion"
-#endif
-
 bool
 cipher_ctx_mode_cbc(const cipher_ctx_t *ctx)
 {
@@ -909,7 +904,7 @@
         return false;
     }

-    int flags = EVP_CIPHER_CTX_flags(ctx);
+    unsigned long flags = EVP_CIPHER_CTX_flags(ctx);
     int mode = EVP_CIPHER_CTX_mode(ctx);

     return mode == EVP_CIPH_CBC_MODE
@@ -940,7 +935,7 @@
 {
     if (ctx)
     {
-        int flags = EVP_CIPHER_CTX_flags(ctx);
+        unsigned long flags = EVP_CIPHER_CTX_flags(ctx);
         if (flags & EVP_CIPH_FLAG_AEAD_CIPHER)
         {
             return true;
@@ -995,8 +990,8 @@
 cipher_ctx_final_check_tag(EVP_CIPHER_CTX *ctx, uint8_t *dst, int *dst_len, 
uint8_t *tag,
                            size_t tag_len)
 {
-    ASSERT(tag_len < SIZE_MAX);
-    if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, tag_len, tag))
+    ASSERT(tag_len < INT_MAX);
+    if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, (int)tag_len, tag))
     {
         return 0;
     }
@@ -1004,10 +999,6 @@
     return cipher_ctx_final(ctx, dst, dst_len);
 }

-#if defined(__GNUC__) || defined(__clang__)
-#pragma GCC diagnostic pop
-#endif
-
 /*
  *
  * Generic message digest information functions

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Gerrit-MessageType: newchange
Gerrit-Project: openvpn
Gerrit-Branch: master
Gerrit-Change-Id: I99bc4692526f9143a913e29b266a1816295dfd51
Gerrit-Change-Number: 1446
Gerrit-PatchSet: 1
Gerrit-Owner: flichtenheld <[email protected]>
Gerrit-Reviewer: plaisthos <[email protected]>
Gerrit-CC: openvpn-devel <[email protected]>
Gerrit-Attention: plaisthos <[email protected]>
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