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platform/src/ssl_utils.cc

@@ -1062,6 +1062,27 @@ errout:
 	return -1;
 }
 
+char* ssl_X509_print_name(X509_NAME* name)
+{
+	//ref: https://kahdev.wordpress.com/2008/11/23/a-certificates-name-issuer-and-its-keyusage/
+	// Set up a BIO to put the name line into.
+	BIO *name_Bio = BIO_new(BIO_s_mem());
+
+	// Now, put the name line into the BIO.
+	X509_NAME_print_ex(name_Bio, name, 0, XN_FLAG_ONELINE);
+
+	// Obtain a reference to the data and copy out 
+	// just the length of the data.
+	char *data_start = NULL;
+	char *name_string = NULL;
+	long nameLength = BIO_get_mem_data(name_Bio, &data_start);
+
+	name_string = ALLOC(char, nameLength + 1);
+	memset(name_string, 0, nameLength + 1);
+	memcpy(name_string, data_start, nameLength);
+	BIO_vfree(name_Bio);
+	return name_string;
+}
 /*
  * Returns the result of ssl_key_identifier_sha1() as hex characters with or
  * without colons in a newly allocated string.
@@ -1080,12 +1101,21 @@ char * ssl_key_identifier(EVP_PKEY * key, int colons)
  * Returns the one-line representation of the subject DN in a newly allocated
  * string which must be freed by the caller.
  */
-char *
-ssl_x509_subject(X509 * crt)
+char * ssl_x509_subject(const X509 * crt)
 {
-	return X509_NAME_oneline(X509_get_subject_name(crt), NULL, 0);
+	return ssl_X509_print_name(X509_get_subject_name(crt));
 }
 
+/*
+ * Returns the one-line representation of the issuer in a newly allocated
+ * string which must be freed by the caller.
+ */
+char * ssl_x509_issuer(const X509 * crt)
+{
+	return ssl_X509_print_name(X509_get_issuer_name(crt));
+}
+
+
 /*
  * Parse the common name from the subject distinguished name.
  * Returns string allocated using malloc(), caller must free().