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
|
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "extensions/browser/api/messaging/native_message_host.h"
#include <memory>
#include <string>
#include <utility>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/json/json_reader.h"
#include "base/json/json_writer.h"
#include "base/location.h"
#include "base/macros.h"
#include "base/threading/thread_task_runner_handle.h"
#include "base/values.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/chromeos/arc/extensions/arc_support_message_host.h"
#include "components/policy/core/common/policy_service.h"
#include "content/public/browser/browser_thread.h"
#include "extensions/common/constants.h"
#include "extensions/common/url_pattern.h"
#include "net/url_request/url_request_context_getter.h"
#include "remoting/host/chromoting_host_context.h"
#include "remoting/host/it2me/it2me_native_messaging_host.h"
#include "ui/gfx/native_widget_types.h"
#include "url/gurl.h"
namespace extensions {
namespace {
// A simple NativeMessageHost that mimics the implementation of
// chrome/test/data/native_messaging/native_hosts/echo.py. It is currently
// used for testing by ExtensionApiTest::NativeMessagingBasic.
const char* const kEchoHostOrigins[] = {
// ScopedTestNativeMessagingHost::kExtensionId
"chrome-extension://knldjmfmopnpolahpmmgbagdohdnhkik/"};
class EchoHost : public NativeMessageHost {
public:
static std::unique_ptr<NativeMessageHost> Create() {
return std::unique_ptr<NativeMessageHost>(new EchoHost());
}
EchoHost() : message_number_(0), client_(NULL) {}
void Start(Client* client) override { client_ = client; }
void OnMessage(const std::string& request_string) override {
std::unique_ptr<base::Value> request_value =
base::JSONReader::Read(request_string);
std::unique_ptr<base::DictionaryValue> request(
static_cast<base::DictionaryValue*>(request_value.release()));
if (request_string.find("stopHostTest") != std::string::npos) {
client_->CloseChannel(kNativeHostExited);
} else if (request_string.find("bigMessageTest") != std::string::npos) {
client_->CloseChannel(kHostInputOuputError);
} else {
ProcessEcho(*request);
}
};
scoped_refptr<base::SingleThreadTaskRunner> task_runner() const override {
return base::ThreadTaskRunnerHandle::Get();
};
private:
void ProcessEcho(const base::DictionaryValue& request) {
base::DictionaryValue response;
response.SetInteger("id", ++message_number_);
response.Set("echo", request.CreateDeepCopy());
response.SetString("caller_url", kEchoHostOrigins[0]);
std::string response_string;
base::JSONWriter::Write(response, &response_string);
client_->PostMessageFromNativeHost(response_string);
}
int message_number_;
Client* client_;
DISALLOW_COPY_AND_ASSIGN(EchoHost);
};
struct BuiltInHost {
const char* const name;
const char* const* const allowed_origins;
int allowed_origins_count;
std::unique_ptr<NativeMessageHost> (*create_function)();
};
std::unique_ptr<NativeMessageHost> CreateIt2MeHost() {
std::unique_ptr<remoting::It2MeHostFactory> host_factory(
new remoting::It2MeHostFactory());
std::unique_ptr<remoting::ChromotingHostContext> context =
remoting::ChromotingHostContext::CreateForChromeOS(
make_scoped_refptr(g_browser_process->system_request_context()),
content::BrowserThread::GetTaskRunnerForThread(
content::BrowserThread::IO),
content::BrowserThread::GetTaskRunnerForThread(
content::BrowserThread::UI),
content::BrowserThread::GetTaskRunnerForThread(
content::BrowserThread::FILE));
std::unique_ptr<NativeMessageHost> host(
new remoting::It2MeNativeMessagingHost(
/*needs_elevation=*/false, g_browser_process->policy_service(),
std::move(context), std::move(host_factory)));
return host;
}
// If you modify the list of allowed_origins, don't forget to update
// remoting/host/it2me/com.google.chrome.remote_assistance.json.jinja2
// to keep the two lists in sync.
// TODO(kelvinp): Load the native messaging manifest as a resource file into
// chrome and fetch the list of allowed_origins from the manifest (see
// crbug/424743).
const char* const kRemotingIt2MeOrigins[] = {
"chrome-extension://ljacajndfccfgnfohlgkdphmbnpkjflk/",
"chrome-extension://gbchcmhmhahfdphkhkmpfmihenigjmpp/",
"chrome-extension://kgngmbheleoaphbjbaiobfdepmghbfah/",
"chrome-extension://odkaodonbgfohohmklejpjiejmcipmib/",
"chrome-extension://dokpleeekgeeiehdhmdkeimnkmoifgdd/",
"chrome-extension://ajoainacpilcemgiakehflpbkbfipojk/",
"chrome-extension://hmboipgjngjoiaeicfdifdoeacilalgc/",
"chrome-extension://inomeogfingihgjfjlpeplalcfajhgai/",
"chrome-extension://hpodccmdligbeohchckkeajbfohibipg/"};
static const BuiltInHost kBuiltInHost[] = {
{"com.google.chrome.test.echo", // ScopedTestNativeMessagingHost::kHostName
kEchoHostOrigins, arraysize(kEchoHostOrigins), &EchoHost::Create},
{"com.google.chrome.remote_assistance", kRemotingIt2MeOrigins,
arraysize(kRemotingIt2MeOrigins), &CreateIt2MeHost},
{arc::ArcSupportMessageHost::kHostName,
arc::ArcSupportMessageHost::kHostOrigin, 1,
&arc::ArcSupportMessageHost::Create},
};
bool MatchesSecurityOrigin(const BuiltInHost& host,
const std::string& extension_id) {
GURL origin(std::string(kExtensionScheme) + "://" + extension_id);
for (int i = 0; i < host.allowed_origins_count; i++) {
URLPattern allowed_origin(URLPattern::SCHEME_ALL, host.allowed_origins[i]);
if (allowed_origin.MatchesSecurityOrigin(origin)) {
return true;
}
}
return false;
}
} // namespace
std::unique_ptr<NativeMessageHost> NativeMessageHost::Create(
gfx::NativeView native_view,
const std::string& source_extension_id,
const std::string& native_host_name,
bool allow_user_level,
std::string* error) {
for (unsigned int i = 0; i < arraysize(kBuiltInHost); i++) {
const BuiltInHost& host = kBuiltInHost[i];
std::string name(host.name);
if (name == native_host_name) {
if (MatchesSecurityOrigin(host, source_extension_id)) {
return (*host.create_function)();
}
*error = kForbiddenError;
return nullptr;
}
}
*error = kNotFoundError;
return nullptr;
}
} // namespace extensions
|
