cipher: rename GetCipherPtr() to ossl_evp_get_cipherbyname()

While GetCipherPtr() function gets a const EVP_CIPHER * from algorithm
name, GetCipher() macro that is locally defined in
ext/openssl/ossl_cipher.c gets the EVP_CIPHER_CTX from an
OpenSSL::Cipher object. They are completely different things. Rename
GetCipherPtr() for disambiguation.

Author: rhenium

ext/openssl/ossl_cipher.c

@@ -49,7 +49,7 @@ static const rb_data_type_t ossl_cipher_type = {
  * PUBLIC
  */
 const EVP_CIPHER *
-GetCipherPtr(VALUE obj)
+ossl_evp_get_cipherbyname(VALUE obj)
 {
     if (rb_obj_is_kind_of(obj, cCipher)) {
 	EVP_CIPHER_CTX *ctx;

ext/openssl/ossl_cipher.h

@@ -13,7 +13,7 @@
 extern VALUE cCipher;
 extern VALUE eCipherError;
 
-const EVP_CIPHER *GetCipherPtr(VALUE);
+const EVP_CIPHER *ossl_evp_get_cipherbyname(VALUE);
 VALUE ossl_cipher_new(const EVP_CIPHER *);
 void Init_ossl_cipher(void);
 

ext/openssl/ossl_pkcs7.c

@@ -319,7 +319,7 @@ ossl_pkcs7_s_encrypt(int argc, VALUE *argv, VALUE klass)
 #endif
 
     }
-    else ciph = GetCipherPtr(cipher); /* NO NEED TO DUP */
+    else ciph = ossl_evp_get_cipherbyname(cipher);
     flg = NIL_P(flags) ? 0 : NUM2INT(flags);
     ret = NewPKCS7(cPKCS7);
     in = ossl_obj2bio(data);
@@ -525,7 +525,7 @@ ossl_pkcs7_set_cipher(VALUE self, VALUE cipher)
     PKCS7 *pkcs7;
 
     GetPKCS7(self, pkcs7);
-    if (!PKCS7_set_cipher(pkcs7, GetCipherPtr(cipher))) {
+    if (!PKCS7_set_cipher(pkcs7, ossl_evp_get_cipherbyname(cipher))) {
 	ossl_raise(ePKCS7Error, NULL);
     }
 

ext/openssl/ossl_pkey_dsa.c

@@ -348,7 +348,7 @@ ossl_dsa_export(int argc, VALUE *argv, VALUE self)
     GetDSA(self, dsa);
     rb_scan_args(argc, argv, "02", &cipher, &pass);
     if (!NIL_P(cipher)) {
-	ciph = GetCipherPtr(cipher);
+	ciph = ossl_evp_get_cipherbyname(cipher);
 	pass = ossl_pem_passwd_value(pass);
     }
     if (!(out = BIO_new(BIO_s_mem()))) {

ext/openssl/ossl_pkey_ec.c

@@ -446,7 +446,7 @@ static VALUE ossl_ec_key_to_string(VALUE self, VALUE ciph, VALUE pass, int forma
         private = 1;
 
     if (!NIL_P(ciph)) {
-	cipher = GetCipherPtr(ciph);
+	cipher = ossl_evp_get_cipherbyname(ciph);
 	pass = ossl_pem_passwd_value(pass);
     }
 

ext/openssl/ossl_pkey_rsa.c

@@ -350,7 +350,7 @@ ossl_rsa_export(int argc, VALUE *argv, VALUE self)
     rb_scan_args(argc, argv, "02", &cipher, &pass);
 
     if (!NIL_P(cipher)) {
-	ciph = GetCipherPtr(cipher);
+	ciph = ossl_evp_get_cipherbyname(cipher);
 	pass = ossl_pem_passwd_value(pass);
     }
     if (!(out = BIO_new(BIO_s_mem()))) {