Move files related to registry-controlled domains into a new net/base/registry_controlled_domains/ …

net/base/registry_controlled_domain.cc

Index: net/base/registry_controlled_domain.cc
===================================================================
--- net/base/registry_controlled_domain.cc	(revision 147624)
+++ net/base/registry_controlled_domain.cc	(working copy)
@@ -1,254 +0,0 @@
-// 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.
-
-// NB: Modelled after Mozilla's code (originally written by Pamela Greene,
-// later modified by others), but almost entirely rewritten for Chrome.
-//   (netwerk/dns/src/nsEffectiveTLDService.cpp)
-/* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is Mozilla Effective-TLD Service
- *
- * The Initial Developer of the Original Code is
- * Google Inc.
- * Portions created by the Initial Developer are Copyright (C) 2006
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *   Pamela Greene <pamg.bugs@gmail.com> (original author)
- *   Daniel Witte <dwitte@stanford.edu>
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
-#include "net/base/registry_controlled_domain.h"
-
-#include "base/logging.h"
-#include "base/string_util.h"
-#include "base/utf_string_conversions.h"
-#include "googleurl/src/gurl.h"
-#include "googleurl/src/url_parse.h"
-#include "net/base/net_module.h"
-#include "net/base/net_util.h"
-
-#include "effective_tld_names.cc"
-
-namespace net {
-
-namespace {
-
-const int kExceptionRule = 1;
-const int kWildcardRule = 2;
-
-}  // namespace
-
-RegistryControlledDomainService::FindDomainPtr
-RegistryControlledDomainService::find_domain_function_ =
-    Perfect_Hash::FindDomain;
-
-// static
-std::string RegistryControlledDomainService::GetDomainAndRegistry(
-    const GURL& gurl) {
-  const url_parse::Component host =
-      gurl.parsed_for_possibly_invalid_spec().host;
-  if ((host.len <= 0) || gurl.HostIsIPAddress())
-    return std::string();
-  return GetDomainAndRegistryImpl(std::string(
-      gurl.possibly_invalid_spec().data() + host.begin, host.len));
-}
-
-// static
-std::string RegistryControlledDomainService::GetDomainAndRegistry(
-    const std::string& host) {
-  url_canon::CanonHostInfo host_info;
-  const std::string canon_host(CanonicalizeHost(host, &host_info));
-  if (canon_host.empty() || host_info.IsIPAddress())
-    return std::string();
-  return GetDomainAndRegistryImpl(canon_host);
-}
-
-// static
-bool RegistryControlledDomainService::SameDomainOrHost(const GURL& gurl1,
-                                                       const GURL& gurl2) {
-  // See if both URLs have a known domain + registry, and those values are the
-  // same.
-  const std::string domain1(GetDomainAndRegistry(gurl1));
-  const std::string domain2(GetDomainAndRegistry(gurl2));
-  if (!domain1.empty() || !domain2.empty())
-    return domain1 == domain2;
-
-  // No domains.  See if the hosts are identical.
-  const url_parse::Component host1 =
-      gurl1.parsed_for_possibly_invalid_spec().host;
-  const url_parse::Component host2 =
-      gurl2.parsed_for_possibly_invalid_spec().host;
-  if ((host1.len <= 0) || (host1.len != host2.len))
-    return false;
-  return !strncmp(gurl1.possibly_invalid_spec().data() + host1.begin,
-                  gurl2.possibly_invalid_spec().data() + host2.begin,
-                  host1.len);
-}
-
-// static
-size_t RegistryControlledDomainService::GetRegistryLength(
-    const GURL& gurl,
-    bool allow_unknown_registries) {
-  const url_parse::Component host =
-      gurl.parsed_for_possibly_invalid_spec().host;
-  if (host.len <= 0)
-    return std::string::npos;
-  if (gurl.HostIsIPAddress())
-    return 0;
-  return GetRegistryLengthImpl(
-      std::string(gurl.possibly_invalid_spec().data() + host.begin, host.len),
-      allow_unknown_registries);
-}
-
-// static
-size_t RegistryControlledDomainService::GetRegistryLength(
-    const std::string& host,
-    bool allow_unknown_registries) {
-  url_canon::CanonHostInfo host_info;
-  const std::string canon_host(CanonicalizeHost(host, &host_info));
-  if (canon_host.empty())
-    return std::string::npos;
-  if (host_info.IsIPAddress())
-    return 0;
-  return GetRegistryLengthImpl(canon_host, allow_unknown_registries);
-}
-
-// static
-void RegistryControlledDomainService::UseFindDomainFunction(
-    FindDomainPtr function) {
-  find_domain_function_ = function ? function : Perfect_Hash::FindDomain;
-}
-
-// static
-std::string RegistryControlledDomainService::GetDomainAndRegistryImpl(
-    const std::string& host) {
-  DCHECK(!host.empty());
-
-  // Find the length of the registry for this host.
-  const size_t registry_length = GetRegistryLengthImpl(host, true);
-  if ((registry_length == std::string::npos) || (registry_length == 0))
-    return std::string();  // No registry.
-  // The "2" in this next line is 1 for the dot, plus a 1-char minimum preceding
-  // subcomponent length.
-  DCHECK(host.length() >= 2);
-  if (registry_length > (host.length() - 2)) {
-    NOTREACHED() <<
-        "Host does not have at least one subcomponent before registry!";
-    return std::string();
-  }
-
-  // Move past the dot preceding the registry, and search for the next previous
-  // dot.  Return the host from after that dot, or the whole host when there is
-  // no dot.
-  const size_t dot = host.rfind('.', host.length() - registry_length - 2);
-  if (dot == std::string::npos)
-    return host;
-  return host.substr(dot + 1);
-}
-
-size_t RegistryControlledDomainService::GetRegistryLengthImpl(
-    const std::string& host,
-    bool allow_unknown_registries) {
-  DCHECK(!host.empty());
-
-  // Skip leading dots.
-  const size_t host_check_begin = host.find_first_not_of('.');
-  if (host_check_begin == std::string::npos)
-    return 0;  // Host is only dots.
-
-  // A single trailing dot isn't relevant in this determination, but does need
-  // to be included in the final returned length.
-  size_t host_check_len = host.length();
-  if (host[host_check_len - 1] == '.') {
-    --host_check_len;
-    DCHECK(host_check_len > 0);  // If this weren't true, the host would be ".",
-                                 // and we'd have already returned above.
-    if (host[host_check_len - 1] == '.')
-      return 0;  // Multiple trailing dots.
-  }
-
-  // Walk up the domain tree, most specific to least specific,
-  // looking for matches at each level.
-  size_t prev_start = std::string::npos;
-  size_t curr_start = host_check_begin;
-  size_t next_dot = host.find('.', curr_start);
-  if (next_dot >= host_check_len)  // Catches std::string::npos as well.
-    return 0;  // This can't have a registry + domain.
-  while (1) {
-    const char* domain_str = host.data() + curr_start;
-    int domain_length = host_check_len - curr_start;
-    const DomainRule* rule = find_domain_function_(domain_str, domain_length);
-
-    // We need to compare the string after finding a match because the
-    // no-collisions of perfect hashing only refers to items in the set.  Since
-    // we're searching for arbitrary domains, there could be collisions.
-    if (rule &&
-        base::strncasecmp(domain_str, rule->name, domain_length) == 0) {
-      // Exception rules override wildcard rules when the domain is an exact
-      // match, but wildcards take precedence when there's a subdomain.
-      if (rule->type == kWildcardRule && (prev_start != std::string::npos)) {
-        // If prev_start == host_check_begin, then the host is the registry
-        // itself, so return 0.
-        return (prev_start == host_check_begin) ?
-            0 : (host.length() - prev_start);
-      }
-
-      if (rule->type == kExceptionRule) {
-        if (next_dot == std::string::npos) {
-          // If we get here, we had an exception rule with no dots (e.g.
-          // "!foo").  This would only be valid if we had a corresponding
-          // wildcard rule, which would have to be "*".  But we explicitly
-          // disallow that case, so this kind of rule is invalid.
-          NOTREACHED() << "Invalid exception rule";
-          return 0;
-        }
-        return host.length() - next_dot - 1;
-      }
-
-      // If curr_start == host_check_begin, then the host is the registry
-      // itself, so return 0.
-      return (curr_start == host_check_begin) ?
-          0 : (host.length() - curr_start);
-    }
-
-    if (next_dot >= host_check_len)  // Catches std::string::npos as well.
-      break;
-
-    prev_start = curr_start;
-    curr_start = next_dot + 1;
-    next_dot = host.find('.', curr_start);
-  }
-
-  // No rule found in the registry.  curr_start now points to the first
-  // character of the last subcomponent of the host, so if we allow unknown
-  // registries, return the length of this subcomponent.
-  return allow_unknown_registries ? (host.length() - curr_start) : 0;
-}
-
-}  // namespace net