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
|
// 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 "chrome/browser/extensions/shared_module_service.h"
#include <vector>
#include "base/version.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/extensions/pending_extension_manager.h"
#include "chrome/common/extensions/extension_constants.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/extension_system.h"
#include "extensions/common/extension.h"
namespace extensions {
namespace {
typedef std::vector<SharedModuleInfo::ImportInfo> ImportInfoVector;
typedef std::list<SharedModuleInfo::ImportInfo> ImportInfoList;
} // namespace
SharedModuleService::SharedModuleService(content::BrowserContext* context)
: extension_registry_observer_(this), browser_context_(context) {
extension_registry_observer_.Add(ExtensionRegistry::Get(browser_context_));
}
SharedModuleService::~SharedModuleService() {
}
SharedModuleService::ImportStatus SharedModuleService::CheckImports(
const Extension* extension,
ImportInfoList* missing_modules,
ImportInfoList* outdated_modules) {
DCHECK(extension);
DCHECK(missing_modules && missing_modules->empty());
DCHECK(outdated_modules && outdated_modules->empty());
ImportStatus status = IMPORT_STATUS_OK;
ExtensionRegistry* registry = ExtensionRegistry::Get(browser_context_);
const ImportInfoVector& imports = SharedModuleInfo::GetImports(extension);
for (ImportInfoVector::const_iterator iter = imports.begin();
iter != imports.end();
++iter) {
base::Version version_required(iter->minimum_version);
const Extension* imported_module =
registry->GetExtensionById(iter->extension_id,
ExtensionRegistry::EVERYTHING);
if (!imported_module) {
if (extension->from_webstore()) {
status = IMPORT_STATUS_UNSATISFIED;
missing_modules->push_back(*iter);
} else {
return IMPORT_STATUS_UNRECOVERABLE;
}
} else if (!SharedModuleInfo::IsSharedModule(imported_module)) {
return IMPORT_STATUS_UNRECOVERABLE;
} else if (!SharedModuleInfo::IsExportAllowedByWhitelist(imported_module,
extension->id())) {
return IMPORT_STATUS_UNRECOVERABLE;
} else if (version_required.IsValid() &&
imported_module->version()->CompareTo(version_required) < 0) {
if (imported_module->from_webstore()) {
outdated_modules->push_back(*iter);
status = IMPORT_STATUS_UNSATISFIED;
} else {
return IMPORT_STATUS_UNRECOVERABLE;
}
}
}
return status;
}
SharedModuleService::ImportStatus SharedModuleService::SatisfyImports(
const Extension* extension) {
ImportInfoList missing_modules;
ImportInfoList outdated_modules;
ImportStatus status =
CheckImports(extension, &missing_modules, &outdated_modules);
ExtensionService* service =
ExtensionSystem::Get(browser_context_)->extension_service();
PendingExtensionManager* pending_extension_manager =
service->pending_extension_manager();
DCHECK(pending_extension_manager);
if (status == IMPORT_STATUS_UNSATISFIED) {
for (ImportInfoList::const_iterator iter = missing_modules.begin();
iter != missing_modules.end();
++iter) {
pending_extension_manager->AddFromExtensionImport(
iter->extension_id,
extension_urls::GetWebstoreUpdateUrl(),
SharedModuleInfo::IsSharedModule);
}
service->CheckForUpdatesSoon();
}
return status;
}
scoped_ptr<ExtensionSet> SharedModuleService::GetDependentExtensions(
const Extension* extension) {
scoped_ptr<ExtensionSet> dependents(new ExtensionSet());
if (SharedModuleInfo::IsSharedModule(extension)) {
ExtensionRegistry* registry = ExtensionRegistry::Get(browser_context_);
ExtensionService* service =
ExtensionSystem::Get(browser_context_)->extension_service();
ExtensionSet set_to_check;
set_to_check.InsertAll(registry->enabled_extensions());
set_to_check.InsertAll(registry->disabled_extensions());
set_to_check.InsertAll(*service->delayed_installs());
for (ExtensionSet::const_iterator iter = set_to_check.begin();
iter != set_to_check.end();
++iter) {
if (SharedModuleInfo::ImportsExtensionById(iter->get(),
extension->id())) {
dependents->Insert(*iter);
}
}
}
return dependents.PassAs<ExtensionSet>();
}
void SharedModuleService::OnExtensionUninstalled(
content::BrowserContext* browser_context,
const Extension* extension) {
// Uninstalls shared modules that were only referenced by |extension|.
if (!SharedModuleInfo::ImportsModules(extension))
return;
ExtensionRegistry* registry = ExtensionRegistry::Get(browser_context_);
ExtensionService* service =
ExtensionSystem::Get(browser_context_)->extension_service();
const ImportInfoVector& imports = SharedModuleInfo::GetImports(extension);
for (ImportInfoVector::const_iterator iter = imports.begin();
iter != imports.end();
++iter) {
const Extension* imported_module =
registry->GetExtensionById(iter->extension_id,
ExtensionRegistry::EVERYTHING);
if (imported_module && imported_module->from_webstore()) {
scoped_ptr<ExtensionSet> dependents =
GetDependentExtensions(imported_module);
if (dependents->is_empty()) {
service->UninstallExtension(iter->extension_id,
true, // External uninstall.
NULL); // Ignore error.
}
}
}
}
} // namespace extensions
|
