src: prefer bool over int in crypto_common

PR-URL: #42097
Reviewed-By: Filip Skokan <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Darshan Sen <[email protected]>

Author: tniessen

src/crypto/crypto_common.cc

@@ -49,7 +49,7 @@ static constexpr int kX509NameFlagsMultiline =
     XN_FLAG_SEP_MULTILINE |
     XN_FLAG_FN_SN;
 
-int SSL_CTX_get_issuer(SSL_CTX* ctx, X509* cert, X509** issuer) {
+bool SSL_CTX_get_issuer(SSL_CTX* ctx, X509* cert, X509** issuer) {
   X509_STORE* store = SSL_CTX_get_cert_store(ctx);
   DeleteFnPtr<X509_STORE_CTX, X509_STORE_CTX_free> store_ctx(
       X509_STORE_CTX_new());
@@ -159,7 +159,8 @@ long VerifyPeerCertificate(  // NOLINT(runtime/int)
   return err;
 }
 
-int UseSNIContext(const SSLPointer& ssl, BaseObjectPtr<SecureContext> context) {
+bool UseSNIContext(
+    const SSLPointer& ssl, BaseObjectPtr<SecureContext> context) {
   SSL_CTX* ctx = context->ctx_.get();
   X509* x509 = SSL_CTX_get0_certificate(ctx);
   EVP_PKEY* pkey = SSL_CTX_get0_privatekey(ctx);
@@ -169,7 +170,7 @@ int UseSNIContext(const SSLPointer& ssl, BaseObjectPtr<SecureContext> context) {
   if (err == 1) err = SSL_use_certificate(ssl.get(), x509);
   if (err == 1) err = SSL_use_PrivateKey(ssl.get(), pkey);
   if (err == 1 && chain != nullptr) err = SSL_set1_chain(ssl.get(), chain);
-  return err;
+  return err == 1;
 }
 
 const char* GetClientHelloALPN(const SSLPointer& ssl) {

src/crypto/crypto_common.h

@@ -25,7 +25,7 @@ struct StackOfXASN1Deleter {
 };
 using StackOfASN1 = std::unique_ptr<STACK_OF(ASN1_OBJECT), StackOfXASN1Deleter>;
 
-int SSL_CTX_get_issuer(SSL_CTX* ctx, X509* cert, X509** issuer);
+bool SSL_CTX_get_issuer(SSL_CTX* ctx, X509* cert, X509** issuer);
 
 void LogSecret(
     const SSLPointer& ssl,
@@ -59,7 +59,7 @@ long VerifyPeerCertificate(  // NOLINT(runtime/int)
     const SSLPointer& ssl,
     long def = X509_V_ERR_UNSPECIFIED);  // NOLINT(runtime/int)
 
-int UseSNIContext(const SSLPointer& ssl, BaseObjectPtr<SecureContext> context);
+bool UseSNIContext(const SSLPointer& ssl, BaseObjectPtr<SecureContext> context);
 
 const char* GetClientHelloALPN(const SSLPointer& ssl);