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
|
// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ASH_DBUS_VM_VM_PERMISSION_SERVICE_PROVIDER_H_
#define CHROME_BROWSER_ASH_DBUS_VM_VM_PERMISSION_SERVICE_PROVIDER_H_
#include <memory>
#include <string>
#include <unordered_map>
#include <utility>
#include "base/containers/flat_map.h"
#include "base/memory/weak_ptr.h"
#include "base/unguessable_token.h"
#include "chromeos/ash/components/dbus/services/cros_dbus_service.h"
#include "dbus/exported_object.h"
namespace dbus {
class MethodCall;
} // namespace dbus
namespace ash {
// This class exports D-Bus methods for querying VM permissions and
// registering and unregistering VMs with the permission service.
//
// RegisterVm:
// % dbus-send --system --type=method_call --print-reply
// --dest=org.chromium.VmPermissionService
// /org/chromium/VmPermissionService
// org.chromium.VmPermissionServiceInterface.RegisterVm
// array:byte:0x0a,0x0a,0x50,0x76,0x6d,0x44,0x65,0x66,0x61,0x75,0x6c,0x74,
// 0x12,0x28,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x30,0x61,0x62,
// 0x63,0x64,0x65,0x66,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x30,
// 0x61,0x62,0x63,0x64,0x65,0x66,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,
// 0x18,0x01
//
// (name: "PvmDefault",
// owner_id: "1234567890abcdef1234567890abcdef12345678"
// type: PLUGIN_VM)
//
// % (returns message RegisterVmResponse {
// string token = 1; // Access token for GetPermissions call
//
// UnregisterVm:
// % dbus-send --system --type=method_call --print-reply
// --dest=org.chromium.VmPermissionService
// /org/chromium/VmPermissionService
// org.chromium.VmPermissionServiceInterface.UnegisterVm
// array:byte:0x0a,0x0a,0x50,0x76,0x6d,0x44,0x65,0x66,0x61,0x75,0x6c,0x74,
// 0x12,0x28,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x30,0x61,0x62,
// 0x63,0x64,0x65,0x66,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x30,
// 0x61,0x62,0x63,0x64,0x65,0x66,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38
//
// (name: "PvmDefault",
// owner_id: "1234567890abcdef1234567890abcdef12345678"
//
// % (returns empty message on success)
//
// SetPermissions:
// % dbus-send --system --type=method_call --print-reply
// --dest=org.chromium.VmPermissionService
// /org/chromium/VmPermissionService
// org.chromium.VmPermissionServiceInterface.SetPermissions
// array:byte:0x0a,0x0a,0x50,0x76,0x6d,0x44,0x65,0x66,0x61,0x75,0x6c,0x74,
// 0x12,0x28,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x30,0x61,0x62,
// 0x63,0x64,0x65,0x66,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x30,
// 0x61,0x62,0x63,0x64,0x65,0x66,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,
// 0x1a,0x04,0x08,0x01,0x10,0x01
//
// (name: "PvmDefault"
// owner_id: "1234567890abcdef1234567890abcdef12345678"
// permissions {
// kind: MICROPHONE
// allowed: true
// })
//
// % (returns empty message on success)
//
// GetPermissions:
// % dbus-send --system --type=method_call --print-reply
// --dest=org.chromium.VmPermissionService
// /org/chromium/VmPermissionService
// org.chromium.VmPermissionServiceInterface.GetPermissions
// array:byte:0x0a,0x24,0x36,0x36,0x62,0x32,0x65,0x32,0x37,0x33,0x2d,0x66,
// 0x36,0x63,0x62,0x2d,0x34,0x63,0x37,0x37,0x2d,0x39,0x34,0x30,0x32,0x2d,
// 0x61,0x61,0x34,0x66,0x36,0x62,0x66,0x39,0x37,0x64,0x35,0x33
//
// (token: "66b2e273-f6cb-4c77-9402-aa4f6bf97d53")
//
// % (returns message GetPermssionsResponse {
// repeated Permission permissions = 1; // Current set of permissions
// // for the VM.
class VmPermissionServiceProvider
: public CrosDBusService::ServiceProviderInterface {
public:
VmPermissionServiceProvider();
VmPermissionServiceProvider(const VmPermissionServiceProvider&) = delete;
VmPermissionServiceProvider& operator=(const VmPermissionServiceProvider&) =
delete;
~VmPermissionServiceProvider() override;
// CrosDBusService::ServiceProviderInterface overrides:
void Start(scoped_refptr<dbus::ExportedObject> exported_object) override;
private:
struct VmInfo {
enum VmType { CrostiniVm = 0, PluginVm = 1, Borealis = 2, Bruschetta = 3 };
enum PermissionType { PermissionCamera = 0, PermissionMicrophone = 1 };
const std::string owner_id;
const std::string name;
const VmType type;
base::flat_map<PermissionType, bool> permission_to_enabled_map;
VmInfo(std::string owner_id, std::string name, VmType type);
~VmInfo();
};
using VmMap = std::unordered_map<base::UnguessableToken,
std::unique_ptr<VmInfo>,
base::UnguessableTokenHash>;
// Called from ExportedObject when GetLicenseDataResponse() is exported as a
// D-Bus method or failed to be exported.
void OnExported(const std::string& interface_name,
const std::string& method_name,
bool success);
void RegisterVm(dbus::MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender);
void UnregisterVm(dbus::MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender);
void SetPermissions(dbus::MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender);
void GetPermissions(dbus::MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender);
void UpdateVmPermissions(VmInfo* vm);
void UpdatePluginVmPermissions(VmInfo* vm);
void UpdateBorealisPermissions(VmInfo* vm);
void UpdateBruschettaPermissions(VmInfo* vm);
void SetCameraPermission(base::UnguessableToken token, bool enabled);
// Returns an iterator to a vm with given |owner_id| and |name|).
VmMap::iterator FindVm(const std::string& owner_id, const std::string& name);
// VMs currently registered with the permission service, keyed by their
// access token.
VmMap vms_;
// Keep this last so that all weak pointers will be invalidated at the
// beginning of destruction.
base::WeakPtrFactory<VmPermissionServiceProvider> weak_ptr_factory_{this};
};
} // namespace ash
#endif // CHROME_BROWSER_ASH_DBUS_VM_VM_PERMISSION_SERVICE_PROVIDER_H_
|
