backport 1927034 from trunk

  escape ssl vars

Reviewed By: rpluem, jorton, covener, ylavic



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1927042 13f79535-47bb-0310-9956-ffa450edef68

Author: covener

modules/ssl/ssl_engine_vars.c

@@ -1208,8 +1208,9 @@ static const char *ssl_var_log_handler_c(request_rec *r, char *a)
         result = "-";
     else if (strEQ(a, "errstr"))
         result = (char *)sslconn->verify_error;
-    if (result != NULL && result[0] == NUL)
-        result = NULL;
+    if (result) {
+        result = *result ? ap_escape_logitem(r->pool, result) : NULL;
+    }
     return result;
 }
 
@@ -1222,8 +1223,9 @@ static const char *ssl_var_log_handler_x(request_rec *r, char *a)
     char *result;
 
     result = ssl_var_lookup(r->pool, r->server, r->connection, r, a);
-    if (result != NULL && result[0] == NUL)
-        result = NULL;
+    if (result) {
+        result = *result ? ap_escape_logitem(r->pool, result) : NULL;
+    }
     return result;
 }