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
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/widget/filedialog/WinFileDialogParent.h"
#include "mozilla/Logging.h"
#include "mozilla/Result.h"
#include "mozilla/SpinEventLoopUntil.h"
#include "mozilla/StaticString.h"
#include "mozilla/ipc/UtilityProcessManager.h"
#include "nsISupports.h"
namespace mozilla::widget::filedialog {
// Count of currently-open file dialogs (not just open-file dialogs).
static size_t sOpenDialogActors = 0;
WinFileDialogParent::WinFileDialogParent() {
MOZ_LOG(sLogFileDialog, LogLevel::Debug,
("%s %p", __PRETTY_FUNCTION__, this));
}
WinFileDialogParent::~WinFileDialogParent() {
MOZ_LOG(sLogFileDialog, LogLevel::Debug,
("%s %p", __PRETTY_FUNCTION__, this));
}
PWinFileDialogParent::nsresult WinFileDialogParent::BindToUtilityProcess(
mozilla::ipc::UtilityProcessParent* aUtilityParent) {
Endpoint<PWinFileDialogParent> parentEnd;
Endpoint<PWinFileDialogChild> childEnd;
nsresult rv = PWinFileDialog::CreateEndpoints(
mozilla::ipc::EndpointProcInfo::Current(),
aUtilityParent->OtherEndpointProcInfo(), &parentEnd, &childEnd);
if (NS_FAILED(rv)) {
MOZ_ASSERT(false, "Protocol endpoints failure");
return NS_ERROR_FAILURE;
}
if (!aUtilityParent->SendStartWinFileDialogService(std::move(childEnd))) {
MOZ_ASSERT(false, "SendStartWinFileDialogService failed");
return NS_ERROR_FAILURE;
}
if (!parentEnd.Bind(this)) {
MOZ_ASSERT(false, "parentEnd.Bind failed");
return NS_ERROR_FAILURE;
}
sOpenDialogActors++;
return NS_OK;
}
// Convert the raw IPC promise-type to a filedialog::Promise.
template <typename T, typename Ex>
static auto ConvertToFDPromise(
StaticString aMethod, // __func__
Ex&& extractor,
RefPtr<MozPromise<T, mozilla::ipc::ResponseRejectReason, true>>
aSrcPromise) {
// The extractor must produce a `mozilla::Result<..., Error>` from `T`.
using SrcResultInfo = detail::DestructureResult<std::invoke_result_t<Ex, T>>;
using ResolveT = typename SrcResultInfo::OkT;
static_assert(std::is_same_v<typename SrcResultInfo::ErrorT, Error>,
"expected T to be a Result<..., Error>");
using SrcPromiseT = MozPromise<T, mozilla::ipc::ResponseRejectReason, true>;
using DstPromiseT = MozPromise<ResolveT, Error, true>;
RefPtr<DstPromiseT> ret = aSrcPromise->Then(
mozilla::GetCurrentSerialEventTarget(), aMethod,
[extractor, aMethod](T&& val) {
mozilla::Result<ResolveT, Error> result = extractor(std::move(val));
if (result.isOk()) {
return DstPromiseT::CreateAndResolve(result.unwrap(), aMethod);
}
return DstPromiseT::CreateAndReject(result.unwrapErr(), aMethod);
},
[aMethod](typename mozilla::ipc::ResponseRejectReason&& val) {
return DstPromiseT::CreateAndReject(
MOZ_FD_ERROR(IPCError, "IPC", (uint32_t)val), aMethod);
});
return ret;
}
template <typename Input, typename Output>
struct Extractor {
template <typename Input::Type tag_, Output const& (Input::*getter_)() const>
static auto get() {
return [](Input&& res) -> Result<Output, Error> {
if (res.type() == tag_) {
return (res.*getter_)();
}
if (res.type() == Input::TRemoteError) {
RemoteError err = res.get_RemoteError();
return Err(Error{.kind = Error::RemoteError,
.where = Error::Location::Deserialize(err.where()),
.why = err.why()});
}
MOZ_ASSERT_UNREACHABLE("internal IPC failure?");
return Err(MOZ_FD_ERROR(IPCError, "internal IPC failure?", E_FAIL));
};
}
};
[[nodiscard]] RefPtr<WinFileDialogParent::ShowFileDialogPromise>
WinFileDialogParent::ShowFileDialogImpl(HWND parent, const FileDialogType& type,
mozilla::Span<Command const> commands) {
auto inner_promise = PWinFileDialogParent::SendShowFileDialog(
reinterpret_cast<WindowsHandle>(parent), type, std::move(commands));
return ConvertToFDPromise(
__func__,
Extractor<FileResult, Maybe<Results>>::get<
FileResult::TMaybeResults, &FileResult::get_MaybeResults>(),
std::move(inner_promise));
}
[[nodiscard]] RefPtr<WinFileDialogParent::ShowFolderDialogPromise>
WinFileDialogParent::ShowFolderDialogImpl(
HWND parent, mozilla::Span<Command const> commands) {
auto inner_promise = PWinFileDialogParent::SendShowFolderDialog(
reinterpret_cast<WindowsHandle>(parent), std::move(commands));
return ConvertToFDPromise(
__func__,
Extractor<FolderResult, Maybe<nsString>>::get<
FolderResult::TMaybensString, &FolderResult::get_MaybensString>(),
std::move(inner_promise));
}
void WinFileDialogParent::ProcessingError(Result aCode, const char* aReason) {
detail::LogProcessingError(sLogFileDialog, this, aCode, aReason);
}
ProcessProxy::ProcessProxy(RefPtr<WFDP>&& obj)
: data(MakeRefPtr<Contents>(std::move(obj))) {}
ProcessProxy::Contents::Contents(RefPtr<WFDP>&& obj) : ptr(std::move(obj)) {}
ProcessProxy::Contents::~Contents() {
AssertIsOnMainThread();
// destroy the actor...
ptr->Close();
// ... and possibly the process
if (!--sOpenDialogActors) {
StopProcess();
}
}
void ProcessProxy::Contents::StopProcess() {
auto const upm = ipc::UtilityProcessManager::GetSingleton();
if (!upm) {
// This is only possible when the UtilityProcessManager has shut down -- in
// which case the file-dialog process has also already been directed to shut
// down, and there's nothing we need to do here.
return;
}
MOZ_LOG(sLogFileDialog, LogLevel::Debug,
("%s: killing the WINDOWS_FILE_DIALOG process (no more live "
"actors)",
__PRETTY_FUNCTION__));
upm->CleanShutdown(ipc::SandboxingKind::WINDOWS_FILE_DIALOG);
}
} // namespace mozilla::widget::filedialog
|
