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
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
content / renderer / pepper / pepper_webplugin_impl.cc [blame]
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/renderer/pepper/pepper_webplugin_impl.h"
#include <stddef.h>
#include <cmath>
#include <utility>
#include "base/debug/crash_logging.h"
#include "base/location.h"
#include "base/memory/raw_ptr.h"
#include "base/strings/utf_string_conversions.h"
#include "base/task/single_thread_task_runner.h"
#include "content/public/renderer/content_renderer_client.h"
#include "content/renderer/pepper/message_channel.h"
#include "content/renderer/pepper/pepper_plugin_instance_impl.h"
#include "content/renderer/pepper/plugin_module.h"
#include "content/renderer/pepper/v8object_var.h"
#include "content/renderer/render_frame_impl.h"
#include "content/renderer/renderer_blink_platform_impl.h"
#include "ppapi/shared_impl/ppapi_globals.h"
#include "ppapi/shared_impl/var_tracker.h"
#include "third_party/blink/public/common/input/web_coalesced_input_event.h"
#include "third_party/blink/public/common/input/web_input_event.h"
#include "third_party/blink/public/common/input/web_keyboard_event.h"
#include "third_party/blink/public/common/thread_safe_browser_interface_broker_proxy.h"
#include "third_party/blink/public/mojom/input/focus_type.mojom.h"
#include "third_party/blink/public/platform/platform.h"
#include "third_party/blink/public/web/web_associated_url_loader_client.h"
#include "third_party/blink/public/web/web_document.h"
#include "third_party/blink/public/web/web_element.h"
#include "third_party/blink/public/web/web_frame.h"
#include "third_party/blink/public/web/web_plugin_container.h"
#include "third_party/blink/public/web/web_plugin_params.h"
#include "third_party/blink/public/web/web_print_params.h"
#include "ui/base/cursor/cursor.h"
#include "ui/events/keycodes/keyboard_codes.h"
#include "url/gurl.h"
using ppapi::V8ObjectVar;
using blink::WebPlugin;
using blink::WebPluginContainer;
using blink::WebPluginParams;
using blink::WebPrintParams;
using blink::WebString;
using blink::WebURL;
using blink::WebVector;
namespace content {
blink::WebTextInputType ConvertTextInputType(ui::TextInputType type) {
// Check the type is in the range representable by ui::TextInputType.
DCHECK_LE(type, static_cast<int>(ui::TEXT_INPUT_TYPE_MAX))
<< "blink::WebTextInputType and ui::TextInputType not synchronized";
return static_cast<blink::WebTextInputType>(type);
}
struct PepperWebPluginImpl::InitData {
scoped_refptr<PluginModule> module;
raw_ptr<RenderFrameImpl> render_frame;
std::vector<std::string> arg_names;
std::vector<std::string> arg_values;
GURL url;
};
PepperWebPluginImpl::PepperWebPluginImpl(PluginModule* plugin_module,
const WebPluginParams& params,
RenderFrameImpl* render_frame)
: init_data_(new InitData()),
full_frame_(params.load_manually),
instance_object_(PP_MakeUndefined()),
container_(nullptr) {
DCHECK(plugin_module);
init_data_->module = plugin_module;
init_data_->render_frame = render_frame;
for (size_t i = 0; i < params.attribute_names.size(); ++i) {
init_data_->arg_names.push_back(params.attribute_names[i].Utf8());
init_data_->arg_values.push_back(params.attribute_values[i].Utf8());
}
init_data_->url = params.url;
// Set subresource URL for crash reporting.
static auto* const subresource_url = base::debug::AllocateCrashKeyString(
"subresource_url", base::debug::CrashKeySize::Size256);
base::debug::SetCrashKeyString(subresource_url, init_data_->url.possibly_invalid_spec());
}
PepperWebPluginImpl::~PepperWebPluginImpl() {}
blink::WebPluginContainer* PepperWebPluginImpl::Container() const {
return container_;
}
bool PepperWebPluginImpl::Initialize(WebPluginContainer* container) {
DCHECK(container);
DCHECK_EQ(this, container->Plugin());
container_ = container;
// The plugin delegate may have gone away.
instance_ = init_data_->module->CreateInstance(
init_data_->render_frame, container, init_data_->url);
if (!instance_)
return false;
if (!instance_->Initialize(init_data_->arg_names, init_data_->arg_values,
full_frame_)) {
// If |container_| is nullptr, this object has already been synchronously
// destroy()-ed during |instance_|'s Initialize call. In that case, we early
// exit. We neither create a replacement plugin nor destroy() ourselves.
if (!container_)
return false;
DCHECK(instance_);
ppapi::PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(instance_object_);
instance_object_ = PP_MakeUndefined();
instance_->Delete();
instance_ = nullptr;
blink::WebPlugin* replacement_plugin =
GetContentClient()->renderer()->CreatePluginReplacement(
init_data_->render_frame, init_data_->module->path());
if (!replacement_plugin)
return false;
// The replacement plugin, if it exists, must never fail to initialize.
container->SetPlugin(replacement_plugin);
CHECK(replacement_plugin->Initialize(container));
DCHECK(container->Plugin() == replacement_plugin);
DCHECK(replacement_plugin->Container() == container);
// Since the container now owns the replacement plugin instead of this
// object, we must schedule ourselves for deletion.
Destroy();
return true;
}
init_data_.reset();
return true;
}
void PepperWebPluginImpl::Destroy() {
container_ = nullptr;
if (instance_) {
ppapi::PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(instance_object_);
instance_object_ = PP_MakeUndefined();
instance_->Delete();
instance_ = nullptr;
}
base::SingleThreadTaskRunner::GetCurrentDefault()->DeleteSoon(FROM_HERE,
this);
}
v8::Local<v8::Object> PepperWebPluginImpl::V8ScriptableObject(
v8::Isolate* isolate) {
// Re-entrancy may cause JS to try to execute script on the plugin before it
// is fully initialized. See e.g. crbug.com/503401.
if (!instance_)
return v8::Local<v8::Object>();
// Call through the plugin to get its instance object. The plugin should pass
// us a reference which we release in destroy().
if (instance_object_.type == PP_VARTYPE_UNDEFINED)
instance_object_ = instance_->GetInstanceObject(isolate);
// GetInstanceObject talked to the plugin which may have removed the instance
// from the DOM, in which case instance_ would be nullptr now.
if (!instance_)
return v8::Local<v8::Object>();
scoped_refptr<V8ObjectVar> object_var(
V8ObjectVar::FromPPVar(instance_object_));
// If there's an InstanceObject, tell the Instance's MessageChannel to pass
// any non-postMessage calls to it.
if (object_var) {
MessageChannel* message_channel = instance_->message_channel();
if (message_channel)
message_channel->SetPassthroughObject(object_var->GetHandle());
}
v8::Local<v8::Object> result = instance_->GetMessageChannelObject();
return result;
}
void PepperWebPluginImpl::Paint(cc::PaintCanvas* canvas,
const gfx::Rect& rect) {
// Re-entrancy may cause JS to try to execute script on the plugin before it
// is fully initialized. See: crbug.com/715747.
if (instance_)
instance_->Paint(canvas, plugin_rect_, rect);
}
void PepperWebPluginImpl::UpdateGeometry(const gfx::Rect& window_rect,
const gfx::Rect& clip_rect,
const gfx::Rect& unobscured_rect,
bool is_visible) {
plugin_rect_ = window_rect;
if (instance_)
instance_->ViewChanged(plugin_rect_, clip_rect, unobscured_rect);
}
void PepperWebPluginImpl::UpdateFocus(bool focused,
blink::mojom::FocusType focus_type) {
// Re-entrancy may cause JS to try to execute script on the plugin before it
// is fully initialized. See: crbug.com/715747.
if (instance_) {
instance_->SetWebKitFocus(focused);
}
}
void PepperWebPluginImpl::UpdateVisibility(bool visible) {}
blink::WebInputEventResult PepperWebPluginImpl::HandleInputEvent(
const blink::WebCoalescedInputEvent& coalesced_event,
ui::Cursor* cursor) {
// Re-entrancy may cause JS to try to execute script on the plugin before it
// is fully initialized. See: crbug.com/715747.
if (!instance_)
return blink::WebInputEventResult::kNotHandled;
return instance_->HandleCoalescedInputEvent(coalesced_event, cursor)
? blink::WebInputEventResult::kHandledApplication
: blink::WebInputEventResult::kNotHandled;
}
void PepperWebPluginImpl::DidReceiveResponse(
const blink::WebURLResponse& response) {
// Re-entrancy may cause JS to try to execute script on the plugin before it
// is fully initialized. See: crbug.com/715747.
if (!instance_)
return;
DCHECK(!instance_->document_loader());
instance_->HandleDocumentLoad(response);
}
void PepperWebPluginImpl::DidReceiveData(base::span<const char> data) {
// Re-entrancy may cause JS to try to execute script on the plugin before it
// is fully initialized. See: crbug.com/715747.
if (!instance_)
return;
blink::WebAssociatedURLLoaderClient* document_loader =
instance_->document_loader();
if (document_loader)
document_loader->DidReceiveData(data);
}
void PepperWebPluginImpl::DidFinishLoading() {
// Re-entrancy may cause JS to try to execute script on the plugin before it
// is fully initialized. See: crbug.com/715747.
if (!instance_)
return;
blink::WebAssociatedURLLoaderClient* document_loader =
instance_->document_loader();
if (document_loader)
document_loader->DidFinishLoading();
}
void PepperWebPluginImpl::DidFailLoading(const blink::WebURLError& error) {
// Re-entrancy may cause JS to try to execute script on the plugin before it
// is fully initialized. See: crbug.com/715747.
if (!instance_)
return;
blink::WebAssociatedURLLoaderClient* document_loader =
instance_->document_loader();
if (document_loader)
document_loader->DidFail(error);
}
bool PepperWebPluginImpl::HasSelection() const {
return !SelectionAsText().IsEmpty();
}
WebString PepperWebPluginImpl::SelectionAsText() const {
// Re-entrancy may cause JS to try to execute script on the plugin before it
// is fully initialized. See: crbug.com/715747.
if (!instance_)
return WebString();
return WebString::FromUTF16(instance_->GetSelectedText(false));
}
WebString PepperWebPluginImpl::SelectionAsMarkup() const {
// Re-entrancy may cause JS to try to execute script on the plugin before it
// is fully initialized. See: crbug.com/715747.
if (!instance_)
return WebString();
return WebString::FromUTF16(instance_->GetSelectedText(true));
}
bool PepperWebPluginImpl::SupportsPaginatedPrint() {
// Re-entrancy may cause JS to try to execute script on the plugin before it
// is fully initialized. See: crbug.com/715747.
if (!instance_)
return false;
return instance_->SupportsPrintInterface();
}
int PepperWebPluginImpl::PrintBegin(const WebPrintParams& print_params) {
// Re-entrancy may cause JS to try to execute script on the plugin before it
// is fully initialized. See: crbug.com/715747.
if (!instance_)
return 0;
return instance_->PrintBegin(print_params);
}
void PepperWebPluginImpl::PrintPage(int page_number, cc::PaintCanvas* canvas) {
// Re-entrancy may cause JS to try to execute script on the plugin before it
// is fully initialized. See: crbug.com/715747.
if (instance_)
instance_->PrintPage(page_number, canvas);
}
void PepperWebPluginImpl::PrintEnd() {
// Re-entrancy may cause JS to try to execute script on the plugin before it
// is fully initialized. See: crbug.com/715747.
if (instance_)
instance_->PrintEnd();
}
void PepperWebPluginImpl::DidLoseMouseLock() {
if (instance_)
instance_->OnMouseLockLost();
}
void PepperWebPluginImpl::DidReceiveMouseLockResult(bool success) {
if (instance_)
instance_->OnLockMouseACK(success);
}
bool PepperWebPluginImpl::CanComposeInline() {
if (!instance_)
return false;
return instance_->IsPluginAcceptingCompositionEvents();
}
void PepperWebPluginImpl::ImeCommitTextForPlugin(
const blink::WebString& text,
const std::vector<ui::ImeTextSpan>& ime_text_spans,
const gfx::Range& replacement_range,
int relative_cursor_pos) {
if (!instance_)
return;
instance_->OnImeCommitText(text.Utf16(), replacement_range,
relative_cursor_pos);
}
void PepperWebPluginImpl::ImeSetCompositionForPlugin(
const blink::WebString& text,
const std::vector<ui::ImeTextSpan>& ime_text_spans,
const gfx::Range& replacement_range,
int selection_start,
int selection_end) {
if (!instance_)
return;
instance_->OnImeSetComposition(text.Utf16(), ime_text_spans, selection_start,
selection_end);
}
void PepperWebPluginImpl::ImeFinishComposingTextForPlugin(bool keep_selection) {
if (!instance_)
return;
instance_->OnImeFinishComposingText(keep_selection);
}
bool PepperWebPluginImpl::ShouldDispatchImeEventsToPlugin() {
return true;
}
blink::WebTextInputType PepperWebPluginImpl::GetPluginTextInputType() {
if (!instance_)
return blink::WebTextInputType::kWebTextInputTypeNone;
return ConvertTextInputType(instance_->text_input_type());
}
gfx::Rect PepperWebPluginImpl::GetPluginCaretBounds() {
if (!instance_)
return gfx::Rect();
return instance_->GetCaretBounds();
}
} // namespace content