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
|
// Copyright 2015 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/browser/devtools/protocol/io_handler.h"
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include "base/files/file.h"
#include "base/files/file_util.h"
#include "base/functional/bind.h"
#include "base/memory/ref_counted_memory.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "content/browser/blob_storage/chrome_blob_storage_context.h"
#include "content/browser/devtools/devtools_io_context.h"
#include "content/browser/devtools/devtools_stream_blob.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/render_process_host.h"
namespace content {
namespace protocol {
IOHandler::IOHandler(DevToolsIOContext* io_context)
: DevToolsDomainHandler(IO::Metainfo::domainName),
io_context_(io_context),
browser_context_(nullptr),
storage_partition_(nullptr) {}
IOHandler::~IOHandler() = default;
void IOHandler::Wire(UberDispatcher* dispatcher) {
frontend_ = std::make_unique<IO::Frontend>(dispatcher->channel());
IO::Dispatcher::wire(dispatcher, this);
}
void IOHandler::SetRenderer(int process_host_id,
RenderFrameHostImpl* frame_host) {
RenderProcessHost* process_host = RenderProcessHost::FromID(process_host_id);
if (process_host) {
browser_context_ = process_host->GetBrowserContext();
storage_partition_ = process_host->GetStoragePartition();
} else {
browser_context_ = nullptr;
storage_partition_ = nullptr;
}
}
void IOHandler::Read(const std::string& handle,
std::optional<int> offset,
std::optional<int> max_size,
std::unique_ptr<ReadCallback> callback) {
static const size_t kDefaultChunkSize = 10 * 1024 * 1024;
static const char kBlobPrefix[] = "blob:";
scoped_refptr<DevToolsIOContext::Stream> stream =
io_context_->GetByHandle(handle);
if (!stream && browser_context_ &&
StartsWith(handle, kBlobPrefix, base::CompareCase::SENSITIVE)) {
ChromeBlobStorageContext* blob_context =
ChromeBlobStorageContext::GetFor(browser_context_);
std::string uuid = handle.substr(strlen(kBlobPrefix));
stream = DevToolsStreamBlob::Create(io_context_, blob_context,
storage_partition_, handle, uuid);
}
if (!stream) {
callback->sendFailure(Response::InvalidParams("Invalid stream handle"));
return;
}
if (offset.has_value() && !stream->SupportsSeek()) {
callback->sendFailure(
Response::InvalidParams("Read offset is specificed for a stream that "
"does not support random access"));
return;
}
int size = max_size.value_or(kDefaultChunkSize);
if (size <= 0) {
callback->sendFailure(Response::InvalidParams("Invalid max read size"));
return;
}
stream->Read(offset.value_or(-1), size,
base::BindOnce(&IOHandler::ReadComplete,
weak_factory_.GetWeakPtr(), std::move(callback)));
}
void IOHandler::ReadComplete(std::unique_ptr<ReadCallback> callback,
std::unique_ptr<std::string> data,
bool base64_encoded,
int status) {
if (status == DevToolsIOContext::Stream::StatusFailure) {
callback->sendFailure(Response::ServerError("Read failed"));
return;
}
bool eof = status == DevToolsIOContext::Stream::StatusEOF;
callback->sendSuccess(base64_encoded, std::move(*data), eof);
}
Response IOHandler::Close(const std::string& handle) {
return io_context_->Close(handle)
? Response::Success()
: Response::InvalidParams("Invalid stream handle");
}
} // namespace protocol
} // namespace content
|
