Track how often we successfully resolve non-'compliant' domain names.

net/dns/dns_util.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_DNS_DNS_UTIL_H_
 #define NET_DNS_DNS_UTIL_H_
 
 #include <string>
 
 #include "base/strings/string_piece.h"
 #include "base/time/time.h"
 #include "net/base/net_export.h"
 #include "net/base/network_change_notifier.h"
 
 namespace net {
 
 class AddressList;
 
 // DNSDomainFromDot - convert a domain string to DNS format. From DJB's
 // public domain DNS library.
 //
 //   dotted: a string in dotted form: "www.google.com"
 //   out: a result in DNS form: "\x03www\x06google\x03com\x00"
 NET_EXPORT_PRIVATE bool DNSDomainFromDot(const base::StringPiece& dotted,
                                          std::string* out);
 
+//   dotted: a string in dotted form: "www.google.com"
+//   out: a result in DNS form: "\x03www\x06google\x03com\x00"
+//   valid_name: whether or not |IsValidHostLabelCharacter| returned true for
+//       all characters in all labels in the name.
+bool DNSDomainFromDotWithValidityCheck(const base::StringPiece& dotted,
+                                       std::string* out,
+                                       bool* valid_name);
+
 // Checks that a hostname is valid. Simple wrapper around DNSDomainFromDot.
 NET_EXPORT_PRIVATE bool IsValidDNSDomain(const base::StringPiece& dotted);
 
 // Returns true if the character is valid in a DNS hostname label, whether in
 // the first position or later in the label.
 //
 // This function asserts a looser form of the restrictions in RFC 7719 (section
 // 2; https://tools.ietf.org/html/rfc7719#section-2): hostnames can include
 // characters a-z, A-Z, 0-9, -, and _, and any of those characters (except -)
 // are legal in the first position. The looser rules are necessary to support
@@ skipping 33 matching lines @@
 };
 
 // Compares two AddressLists to see how similar or different their addresses
 // are. (See |AddressListDeltaType| for details of exactly what's checked.)
 AddressListDeltaType FindAddressListDeltaType(const AddressList& a,
                                               const AddressList& b);
 
 }  // namespace net
 
 #endif  // NET_DNS_DNS_UTIL_H_