1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "base/value_conversions.h"
13 #include "base/files/file_path.h"
14 #include "base/memory/ptr_util.h"
15 #include "base/strings/string_number_conversions.h"
16 #include "base/time/time.h"
17 #include "base/unguessable_token.h"
18 #include "base/values.h"
22 // Helper for serialize/deserialize UnguessableToken.
23 union UnguessableTokenRepresentation {
29 uint8_t buffer[sizeof(Field)];
33 // |Value| internally stores strings in UTF-8, so we have to convert from the
34 // system native code to UTF-8 and back.
35 Value CreateFilePathValue(const FilePath& in_value) {
36 return Value(in_value.AsUTF8Unsafe());
39 bool GetValueAsFilePath(const Value& value, FilePath* file_path) {
41 if (!value.GetAsString(&str))
44 *file_path = FilePath::FromUTF8Unsafe(str);
48 // |Value| does not support 64-bit integers, and doubles do not have enough
49 // precision, so we store the 64-bit time value as a string instead.
50 Value CreateTimeDeltaValue(const TimeDelta& time) {
51 std::string string_value = base::Int64ToString(time.ToInternalValue());
52 return Value(string_value);
55 bool GetValueAsTimeDelta(const Value& value, TimeDelta* time) {
58 if (!value.GetAsString(&str) || !base::StringToInt64(str, &int_value))
61 *time = TimeDelta::FromInternalValue(int_value);
65 Value CreateUnguessableTokenValue(const UnguessableToken& token) {
66 UnguessableTokenRepresentation representation;
67 representation.field.high = token.GetHighForSerialization();
68 representation.field.low = token.GetLowForSerialization();
70 return Value(HexEncode(representation.buffer, sizeof(representation.buffer)));
73 bool GetValueAsUnguessableToken(const Value& value, UnguessableToken* token) {
74 if (!value.is_string()) {
78 // TODO(dcheng|yucliu): Make a function that accepts non vector variant and
79 // reads a fixed number of bytes.
80 std::vector<uint8_t> high_low_bytes;
81 if (!HexStringToBytes(value.GetString(), &high_low_bytes)) {
85 UnguessableTokenRepresentation representation;
86 if (high_low_bytes.size() != sizeof(representation.buffer)) {
90 std::copy(high_low_bytes.begin(), high_low_bytes.end(),
91 std::begin(representation.buffer));
92 *token = UnguessableToken::Deserialize(representation.field.high,
93 representation.field.low);