1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
/*
* Copyright (C) 2023 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "NotificationJSONParser.h"
#if ENABLE(DECLARATIVE_WEB_PUSH)
#include "JSDOMConvertEnumeration.h"
#include <wtf/CheckedArithmetic.h>
#include <wtf/text/MakeString.h>
#include <wtf/text/StringParsingBuffer.h>
namespace WebCore {
static constexpr int expectedDeclarativeWebPushValue = 8030;
static constexpr ASCIILiteral declarativeWebPushKey { "web_push"_s };
static constexpr ASCIILiteral notificationKey { "notification"_s };
static constexpr ASCIILiteral titleKey { "title"_s };
static constexpr ASCIILiteral dirKey { "dir"_s };
static constexpr ASCIILiteral langKey { "lang"_s };
static constexpr ASCIILiteral bodyKey { "body"_s };
static constexpr ASCIILiteral navigationURLKey { "navigate"_s };
static constexpr ASCIILiteral tagKey { "tag"_s };
static constexpr ASCIILiteral iconKey { "icon"_s };
static constexpr ASCIILiteral silentKey { "silent"_s };
static constexpr ASCIILiteral dataKey { "data"_s };
static constexpr ASCIILiteral appBadgeKey { "app_badge"_s };
static constexpr ASCIILiteral mutableKey { "mutable"_s };
static std::optional<unsigned long long> parseAppBadgeString(const String& badgeString)
{
// A valid app badge string contains only ASCII digits and represents a value equal to or less than std::numeric_limits<uint64_t>::max()
return readCharactersForParsing(badgeString, [&](auto buffer) -> std::optional<unsigned long long> {
CheckedUint64 result;
while (buffer.hasCharactersRemaining()) {
result *= 10u;
if (!isASCIIDigit(*buffer))
return std::nullopt;
result += (unsigned)(*buffer - '0');
if (result.hasOverflowed())
return std::nullopt;
buffer.advance();
}
return result.value();
});
}
static bool hasDeclarativeMessageJSONValues(const JSON::Object& outerObject)
{
std::optional<int> declarativeWebPushValue;
if (auto value = outerObject.getValue(declarativeWebPushKey)) {
if (value->type() == JSON::Value::Type::Integer || value->type() == JSON::Value::Type::Double)
declarativeWebPushValue = value->asInteger();
}
if (!declarativeWebPushValue)
return false;
return *declarativeWebPushValue == expectedDeclarativeWebPushValue;
}
bool NotificationJSONParser::hasDeclarativeMessageHeader(const String& json)
{
auto value = JSON::Value::parseJSON(json);
if (!value)
return false;
auto object = value->asObject();
if (!object)
return false;
return hasDeclarativeMessageJSONValues(*object);
}
ExceptionOr<NotificationPayload> NotificationJSONParser::parseNotificationPayload(const JSON::Object& outerObject)
{
if (!hasDeclarativeMessageJSONValues(outerObject))
return Exception { ExceptionCode::SyntaxError, makeString("Push message doesn't have valid declarative web push JSON values"_s) };
auto notificationObject = outerObject.getValue(notificationKey);
if (!notificationObject)
return Exception { ExceptionCode::SyntaxError, makeString("Push message does not have '"_s, notificationKey, "' value"_s) };
if (notificationObject->type() != JSON::Value::Type::Object)
return Exception { ExceptionCode::SyntaxError, makeString("Push message '"_s, notificationKey, "' value is not the expected object type"_s) };
RefPtr protectedObject = notificationObject->asObject();
RELEASE_ASSERT(protectedObject);
URL navigationURL;
if (auto value = protectedObject->getValue(navigationURLKey)) {
if (value->type() != JSON::Value::Type::String)
return Exception { ExceptionCode::SyntaxError, makeString("Push message with Notification disposition: '"_s, navigationURLKey, "' member is specified but is not a string"_s) };
navigationURL = URL { value->asString() };
}
if (!navigationURL.isValid())
return Exception { ExceptionCode::SyntaxError, makeString("Push message with Notification disposition: '"_s, navigationURLKey, "' member is specified but does not represent a valid URL"_s) };
String title;
if (auto value = protectedObject->getValue(titleKey)) {
if (value->type() != JSON::Value::Type::String)
return Exception { ExceptionCode::SyntaxError, makeString("Push message with Notification disposition: '"_s, titleKey, "' member is specified but is not a string"_s) };
title = value->asString();
}
if (title.isEmpty())
return Exception { ExceptionCode::SyntaxError, makeString("Push message with Notification disposition: '"_s, titleKey, "' member is missing or is an empty string"_s) };
std::optional<unsigned long long> appBadge;
if (auto value = protectedObject->getValue(appBadgeKey)) {
if (value->type() == JSON::Value::Type::String) {
appBadge = parseAppBadgeString(value->asString());
if (!appBadge)
return Exception { ExceptionCode::SyntaxError, makeString("Push message with Notification disposition: '"_s, appBadgeKey, "' member is specified as a string that did not parse to a valid unsigned long long"_s) };
} else {
if (value->type() != JSON::Value::Type::Integer && value->type() != JSON::Value::Type::Double)
return Exception { ExceptionCode::SyntaxError, makeString("Push message with Notification disposition: '"_s, appBadgeKey, "' member is specified but is not a string or a number"_s) };
auto appBadgeInt = value->asInteger();
if (!appBadgeInt || *appBadgeInt < 0)
return Exception { ExceptionCode::SyntaxError, makeString("Push message with Notification disposition: '"_s, appBadgeKey, "' member is specified as an number but is not a valid unsigned long long"_s) };
appBadge = (unsigned long long)(*appBadgeInt);
}
}
auto optionsOrException = parseNotificationOptions(*protectedObject);
if (optionsOrException.hasException())
return Exception { ExceptionCode::SyntaxError, makeString("Push message with Notification disposition: '"_s, optionsOrException.exception().message()) };
std::optional<NotificationOptionsPayload> notificationOptions = optionsOrException.releaseReturnValue();
bool isMutable = false;
if (auto value = protectedObject->getValue(mutableKey)) {
if (value->type() != JSON::Value::Type::Boolean)
return Exception { ExceptionCode::SyntaxError, makeString("Push message with Notification disposition: '"_s, mutableKey, "' member is specified but is not a boolean"_s) };
isMutable = *(value->asBoolean());
}
return NotificationPayload { WTFMove(navigationURL), WTFMove(title), WTFMove(appBadge), WTFMove(notificationOptions), isMutable };
}
ExceptionOr<NotificationOptionsPayload> NotificationJSONParser::parseNotificationOptions(const JSON::Object& object)
{
NotificationDirection direction = NotificationDirection::Auto;
if (auto value = object.getValue(dirKey)) {
if (value->type() != JSON::Value::Type::String)
return Exception { ExceptionCode::SyntaxError, makeString('\'', dirKey, "' member is specified but is not a string"_s) };
auto directionString = object.getString(dirKey);
auto parsedDirection = parseEnumerationFromString<NotificationDirection>(directionString);
if (parsedDirection == std::nullopt)
return Exception { ExceptionCode::SyntaxError, makeString('\'', dirKey, "' member is specified but is not a valid NotificationDirection"_s) };
direction = *parsedDirection;
}
String lang;
if (auto value = object.getValue(langKey)) {
if (value->type() != JSON::Value::Type::String)
return Exception { ExceptionCode::SyntaxError, makeString('\'', langKey, "' member is specified but is not a string"_s) };
lang = value->asString();
}
String body;
if (auto value = object.getValue(bodyKey)) {
if (value->type() != JSON::Value::Type::String)
return Exception { ExceptionCode::SyntaxError, makeString('\'', bodyKey, "' member is specified but is not a string"_s) };
body = value->asString();
}
String tag;
if (auto value = object.getValue(tagKey)) {
if (value->type() != JSON::Value::Type::String)
return Exception { ExceptionCode::SyntaxError, makeString('\'', tagKey, "' member is specified but is not a string"_s) };
tag = value->asString();
}
URL iconURL;
if (auto value = object.getValue(iconKey)) {
if (value->type() != JSON::Value::Type::String)
return Exception { ExceptionCode::SyntaxError, makeString('\'', iconKey, "' member is specified but is not a string"_s) };
iconURL = URL { value->asString() };
if (!iconURL.isValid())
return Exception { ExceptionCode::SyntaxError, makeString('\'', iconKey, "' member is specified but does not represent a valid URL"_s) };
}
std::optional<bool> silent;
if (auto value = object.getValue(silentKey)) {
if (value->type() != JSON::Value::Type::Boolean)
return Exception { ExceptionCode::SyntaxError, makeString('\'', silentKey, "' member is specified but is not a boolean"_s) };
silent = value->asBoolean();
}
RefPtr<JSON::Value> dataValue = object.getValue(dataKey);
String dataString = dataValue ? dataValue->toJSONString() : nullString();
return NotificationOptionsPayload { direction, WTFMove(lang), WTFMove(body), WTFMove(tag), iconURL.string(), WTFMove(dataString), WTFMove(silent) };
}
} // namespace WebCore
#endif // ENABLE(DECLARATIVE_WEB_PUSH)
|
