[rac] Use stale libaddressinput data if download fails

third_party/libaddressinput/chromium/cpp/src/validating_util.cc

Index: third_party/libaddressinput/chromium/cpp/src/validating_util.cc
diff --git a/third_party/libaddressinput/chromium/cpp/src/validating_util.cc b/third_party/libaddressinput/chromium/cpp/src/validating_util.cc
deleted file mode 100644
index 7f225c6500e3a6c9263522b4b04e2d647a03078e..0000000000000000000000000000000000000000
--- a/third_party/libaddressinput/chromium/cpp/src/validating_util.cc
+++ /dev/null
@@ -1,145 +0,0 @@
-// Copyright (C) 2013 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-//
-// ValidatingUtil wraps data with checksum and timestamp. Format:
-//
-//    timestamp=<timestamp>
-//    checksum=<checksum>
-//    <data>
-//
-// The timestamp is the time_t that was returned from time() function. The
-// timestamp does not need to be portable because it is written and read only by
-// ValidatingUtil. The value is somewhat human-readable: it is the number of
-// seconds since the epoch.
-//
-// The checksum is the 32-character hexadecimal MD5 checksum of <data>. It is
-// meant to protect from random file changes on disk.
-
-#include "validating_util.h"
-
-#include <cassert>
-#include <cstddef>
-#include <cstdio>
-#include <cstdlib>
-#include <ctime>
-#include <string>
-
-#include "util/md5.h"
-
-#ifdef _MSC_VER
-// http://msdn.microsoft.com/en-us/library/2ts7cx93%28v=vs.110%29.aspx
-#define snprintf _snprintf
-#endif  // _MSC_VER
-
-namespace i18n {
-namespace addressinput {
-
-namespace {
-
-const char kTimestampPrefix[] = "timestamp=";
-const size_t kTimestampPrefixLength = sizeof kTimestampPrefix - 1;
-
-const char kChecksumPrefix[] = "checksum=";
-const size_t kChecksumPrefixLength = sizeof kChecksumPrefix - 1;
-
-const char kSeparator = '\n';
-
-// Places the header value into |header_value| parameter and erases the header
-// from |data|. Returns |true| if the header format is valid.
-bool UnwrapHeader(const char* header_prefix,
-                  size_t header_prefix_length,
-                  std::string* data,
-                  std::string* header_value) {
-  assert(header_prefix != NULL);
-  assert(data != NULL);
-  assert(header_value != NULL);
-
-  if (data->compare(
-          0, header_prefix_length, header_prefix, header_prefix_length) != 0) {
-    return false;
-  }
-
-  std::string::size_type separator_position =
-      data->find(kSeparator, header_prefix_length);
-  if (separator_position == std::string::npos) {
-    return false;
-  }
-
-  header_value->assign(
-      *data, header_prefix_length, separator_position - header_prefix_length);
-  data->erase(0, separator_position + 1);
-
-  return true;
-}
-
-}  // namespace
-
-// static
-std::string ValidatingUtil::Wrap(const std::string& data, time_t timestamp) {
-  char timestamp_string[2 + 3 * sizeof timestamp];
-  snprintf(timestamp_string, sizeof timestamp_string, "%ld", timestamp);
-
-  std::string wrapped;
-  wrapped.append(kTimestampPrefix, kTimestampPrefixLength);
-  wrapped.append(timestamp_string);
-  wrapped.push_back(kSeparator);
-
-  wrapped.append(kChecksumPrefix, kChecksumPrefixLength);
-  wrapped.append(MD5String(data));
-  wrapped.push_back(kSeparator);
-  wrapped.append(data);
-
-  return wrapped;
-}
-
-// static
-bool ValidatingUtil::UnwrapTimestamp(std::string* data, time_t now) {
-  assert(data != NULL);
-  if (now < 0) {
-    return false;
-  }
-
-  std::string timestamp_string;
-  if (!UnwrapHeader(
-           kTimestampPrefix, kTimestampPrefixLength, data, &timestamp_string)) {
-    return false;
-  }
-
-  time_t timestamp = atol(timestamp_string.c_str());
-  if (timestamp < 0) {
-    return false;
-  }
-
-  // One month contains:
-  //    30 days *
-  //    24 hours per day *
-  //    60 minutes per hour *
-  //    60 seconds per minute.
-  static const double kOneMonthInSeconds = 30.0 * 24.0 * 60.0 * 60.0;
-  double age_in_seconds = difftime(now, timestamp);
-  return !(age_in_seconds < 0.0) && age_in_seconds < kOneMonthInSeconds;
-}
-
-// static
-bool ValidatingUtil::UnwrapChecksum(std::string* data) {
-  assert(data != NULL);
-  std::string checksum;
-  if (!UnwrapHeader(kChecksumPrefix, kChecksumPrefixLength, data, &checksum)) {
-    return false;
-  }
-  return checksum == MD5String(*data);
-}
-
-}  // namespace addressinput
-}  // namespace i18n