/work/obj-fuzz/dist/include/ipc/ErrorIPCUtils.h
Line | Count | Source (jump to first uncovered line) |
1 | | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
2 | | /* vim: set ts=8 sts=2 et sw=2 tw=80: */ |
3 | | /* This Source Code Form is subject to the terms of the Mozilla Public |
4 | | * License, v. 2.0. If a copy of the MPL was not distributed with this file, |
5 | | * You can obtain one at http://mozilla.org/MPL/2.0/. */ |
6 | | |
7 | | #include "ipc/IPCMessageUtils.h" |
8 | | #include "mozilla/ErrorResult.h" |
9 | | #include "mozilla/Assertions.h" |
10 | | #include "mozilla/Move.h" |
11 | | |
12 | | #ifndef IPC_ErrorIPCUtils_h |
13 | | #define IPC_ErrorIPCUtils_h |
14 | | |
15 | | namespace IPC { |
16 | | |
17 | | template<> |
18 | | struct ParamTraits<mozilla::dom::ErrNum> : |
19 | | public ContiguousEnumSerializer<mozilla::dom::ErrNum, |
20 | | mozilla::dom::ErrNum(0), |
21 | | mozilla::dom::ErrNum(mozilla::dom::Err_Limit)> {}; |
22 | | |
23 | | template<> |
24 | | struct ParamTraits<mozilla::ErrorResult> |
25 | | { |
26 | | typedef mozilla::ErrorResult paramType; |
27 | | |
28 | | static void Write(Message* aMsg, const paramType& aParam) |
29 | 0 | { |
30 | 0 | // It should be the case that mMightHaveUnreportedJSException can only be |
31 | 0 | // true when we're expecting a JS exception. We cannot send such messages |
32 | 0 | // over the IPC channel since there is no sane way of transferring the JS |
33 | 0 | // value over to the other side. Callers should never do that. |
34 | 0 | MOZ_ASSERT_IF(aParam.IsJSException(), aParam.mMightHaveUnreportedJSException); |
35 | 0 | if (aParam.IsJSException() |
36 | | #ifdef DEBUG |
37 | | || aParam.mMightHaveUnreportedJSException |
38 | | #endif |
39 | 0 | ) { |
40 | 0 | MOZ_CRASH("Cannot encode an ErrorResult representing a Javascript exception"); |
41 | 0 | } |
42 | 0 |
|
43 | 0 | WriteParam(aMsg, aParam.mResult); |
44 | 0 | WriteParam(aMsg, aParam.IsErrorWithMessage()); |
45 | 0 | WriteParam(aMsg, aParam.IsDOMException()); |
46 | 0 | if (aParam.IsErrorWithMessage()) { |
47 | 0 | aParam.SerializeMessage(aMsg); |
48 | 0 | } else if (aParam.IsDOMException()) { |
49 | 0 | aParam.SerializeDOMExceptionInfo(aMsg); |
50 | 0 | } |
51 | 0 | } |
52 | | |
53 | | static bool Read(const Message* aMsg, PickleIterator* aIter, paramType* aResult) |
54 | 0 | { |
55 | 0 | paramType readValue; |
56 | 0 | if (!ReadParam(aMsg, aIter, &readValue.mResult)) { |
57 | 0 | return false; |
58 | 0 | } |
59 | 0 | bool hasMessage = false; |
60 | 0 | if (!ReadParam(aMsg, aIter, &hasMessage)) { |
61 | 0 | return false; |
62 | 0 | } |
63 | 0 | bool hasDOMExceptionInfo = false; |
64 | 0 | if (!ReadParam(aMsg, aIter, &hasDOMExceptionInfo)) { |
65 | 0 | return false; |
66 | 0 | } |
67 | 0 | if (hasMessage && hasDOMExceptionInfo) { |
68 | 0 | // Shouldn't have both! |
69 | 0 | return false; |
70 | 0 | } |
71 | 0 | if (hasMessage && !readValue.DeserializeMessage(aMsg, aIter)) { |
72 | 0 | return false; |
73 | 0 | } else if (hasDOMExceptionInfo && |
74 | 0 | !readValue.DeserializeDOMExceptionInfo(aMsg, aIter)) { |
75 | 0 | return false; |
76 | 0 | } |
77 | 0 | *aResult = std::move(readValue); |
78 | 0 | return true; |
79 | 0 | } |
80 | | }; |
81 | | |
82 | | template<> |
83 | | struct ParamTraits<mozilla::CopyableErrorResult> |
84 | | { |
85 | | typedef mozilla::CopyableErrorResult paramType; |
86 | | |
87 | | static void Write(Message* aMsg, const paramType& aParam) |
88 | 0 | { |
89 | 0 | ParamTraits<mozilla::ErrorResult>::Write(aMsg, aParam); |
90 | 0 | } |
91 | | |
92 | | static bool Read(const Message* aMsg, PickleIterator* aIter, paramType* aResult) |
93 | 0 | { |
94 | 0 | mozilla::ErrorResult& ref = static_cast<mozilla::ErrorResult&>(*aResult); |
95 | 0 | return ParamTraits<mozilla::ErrorResult>::Read(aMsg, aIter, &ref); |
96 | 0 | } |
97 | | }; |
98 | | |
99 | | } // namespace IPC |
100 | | |
101 | | #endif |