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
|
// Copyright 2013 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 "chromeos/network/policy_applicator.h"
#include <utility>
#include "base/bind.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/stl_util.h"
#include "base/values.h"
#include "chromeos/dbus/dbus_thread_manager.h"
#include "chromeos/dbus/shill_profile_client.h"
#include "chromeos/network/network_ui_data.h"
#include "chromeos/network/onc/onc_constants.h"
#include "chromeos/network/onc/onc_signature.h"
#include "chromeos/network/onc/onc_translator.h"
#include "chromeos/network/policy_util.h"
#include "chromeos/network/shill_property_util.h"
#include "dbus/object_path.h"
#include "third_party/cros_system_api/dbus/service_constants.h"
namespace chromeos {
namespace {
void LogErrorMessage(const tracked_objects::Location& from_where,
const std::string& error_name,
const std::string& error_message) {
LOG(ERROR) << from_where.ToString() << ": " << error_message;
}
const base::DictionaryValue* GetByGUID(
const PolicyApplicator::GuidToPolicyMap& policies,
const std::string& guid) {
PolicyApplicator::GuidToPolicyMap::const_iterator it = policies.find(guid);
if (it == policies.end())
return NULL;
return it->second;
}
} // namespace
PolicyApplicator::PolicyApplicator(base::WeakPtr<ConfigurationHandler> handler,
const NetworkProfile& profile,
const GuidToPolicyMap& all_policies,
std::set<std::string>* modified_policies)
: handler_(handler), profile_(profile) {
remaining_policies_.swap(*modified_policies);
for (GuidToPolicyMap::const_iterator it = all_policies.begin();
it != all_policies.end(); ++it) {
all_policies_.insert(std::make_pair(it->first, it->second->DeepCopy()));
}
}
void PolicyApplicator::Run() {
DBusThreadManager::Get()->GetShillProfileClient()->GetProperties(
dbus::ObjectPath(profile_.path),
base::Bind(&PolicyApplicator::GetProfilePropertiesCallback, this),
base::Bind(&LogErrorMessage, FROM_HERE));
}
void PolicyApplicator::GetProfilePropertiesCallback(
const base::DictionaryValue& profile_properties) {
if (!handler_) {
LOG(WARNING) << "Handler destructed during policy application to profile "
<< profile_.ToDebugString();
return;
}
VLOG(2) << "Received properties for profile " << profile_.ToDebugString();
const base::ListValue* entries = NULL;
if (!profile_properties.GetListWithoutPathExpansion(
flimflam::kEntriesProperty, &entries)) {
LOG(ERROR) << "Profile " << profile_.ToDebugString()
<< " doesn't contain the property "
<< flimflam::kEntriesProperty;
return;
}
for (base::ListValue::const_iterator it = entries->begin();
it != entries->end(); ++it) {
std::string entry;
(*it)->GetAsString(&entry);
DBusThreadManager::Get()->GetShillProfileClient()->GetEntry(
dbus::ObjectPath(profile_.path),
entry,
base::Bind(&PolicyApplicator::GetEntryCallback, this, entry),
base::Bind(&LogErrorMessage, FROM_HERE));
}
}
void PolicyApplicator::GetEntryCallback(
const std::string& entry,
const base::DictionaryValue& entry_properties) {
if (!handler_) {
LOG(WARNING) << "Handler destructed during policy application to profile "
<< profile_.ToDebugString();
return;
}
VLOG(2) << "Received properties for entry " << entry << " of profile "
<< profile_.ToDebugString();
scoped_ptr<base::DictionaryValue> onc_part(
onc::TranslateShillServiceToONCPart(entry_properties,
&onc::kNetworkWithStateSignature));
std::string old_guid;
if (!onc_part->GetStringWithoutPathExpansion(onc::network_config::kGUID,
&old_guid)) {
VLOG(1) << "Entry " << entry << " of profile " << profile_.ToDebugString()
<< " doesn't contain a GUID.";
// This might be an entry of an older ChromeOS version. Assume it to be
// unmanaged.
}
scoped_ptr<NetworkUIData> ui_data =
shill_property_util::GetUIDataFromProperties(entry_properties);
if (!ui_data) {
VLOG(1) << "Entry " << entry << " of profile " << profile_.ToDebugString()
<< " contains no or no valid UIData.";
// This might be an entry of an older ChromeOS version. Assume it to be
// unmanaged. It's an inconsistency if there is a GUID but no UIData, thus
// clear the GUID just in case.
old_guid.clear();
}
bool was_managed = !old_guid.empty() && ui_data &&
(ui_data->onc_source() == onc::ONC_SOURCE_DEVICE_POLICY ||
ui_data->onc_source() == onc::ONC_SOURCE_USER_POLICY);
const base::DictionaryValue* new_policy = NULL;
if (was_managed) {
// If we have a GUID that might match a current policy, do a lookup using
// that GUID at first. In particular this is necessary, as some networks
// can't be matched to policies by properties (e.g. VPN).
new_policy = GetByGUID(all_policies_, old_guid);
}
if (!new_policy) {
// If we didn't find a policy by GUID, still a new policy might match.
new_policy = policy_util::FindMatchingPolicy(all_policies_, *onc_part);
}
if (new_policy) {
std::string new_guid;
new_policy->GetStringWithoutPathExpansion(onc::network_config::kGUID,
&new_guid);
VLOG_IF(1, was_managed && old_guid != new_guid)
<< "Updating configuration previously managed by policy " << old_guid
<< " with new policy " << new_guid << ".";
VLOG_IF(1, !was_managed) << "Applying policy " << new_guid
<< " to previously unmanaged "
<< "configuration.";
if (old_guid == new_guid &&
remaining_policies_.find(new_guid) == remaining_policies_.end()) {
VLOG(1) << "Not updating existing managed configuration with guid "
<< new_guid << " because the policy didn't change.";
} else {
// Delete the entry to ensure that no old configuration remains.
// Don't do this if a policy is reapplied (e.g. after reboot) or updated
// (i.e. the GUID didn't change), in order to keep implicit state of
// Shill like "connected successfully before".
if (old_guid == new_guid) {
VLOG(1) << "Updating previously managed configuration with the "
<< "updated policy " << new_guid << ".";
} else {
DeleteEntry(entry);
}
const base::DictionaryValue* user_settings =
ui_data ? ui_data->user_settings() : NULL;
// Write the new configuration.
CreateAndWriteNewShillConfiguration(new_guid, *new_policy, user_settings);
remaining_policies_.erase(new_guid);
}
} else if (was_managed) {
VLOG(1) << "Removing configuration previously managed by policy "
<< old_guid << ", because the policy was removed.";
// Remove the entry, because the network was managed but isn't anymore.
// Note: An alternative might be to preserve the user settings, but it's
// unclear which values originating the policy should be removed.
DeleteEntry(entry);
} else {
VLOG(2) << "Ignore unmanaged entry.";
// The entry wasn't managed and doesn't match any current policy. Thus
// leave it as it is.
}
}
void PolicyApplicator::DeleteEntry(const std::string& entry) {
DBusThreadManager::Get()->GetShillProfileClient()->DeleteEntry(
dbus::ObjectPath(profile_.path),
entry,
base::Bind(&base::DoNothing),
base::Bind(&LogErrorMessage, FROM_HERE));
}
void PolicyApplicator::CreateAndWriteNewShillConfiguration(
const std::string& guid,
const base::DictionaryValue& policy,
const base::DictionaryValue* user_settings) {
scoped_ptr<base::DictionaryValue> shill_dictionary =
policy_util::CreateShillConfiguration(
profile_, guid, &policy, user_settings);
handler_->CreateConfigurationFromPolicy(*shill_dictionary);
}
PolicyApplicator::~PolicyApplicator() {
ApplyRemainingPolicies();
STLDeleteValues(&all_policies_);
}
void PolicyApplicator::ApplyRemainingPolicies() {
if (!handler_) {
LOG(WARNING) << "Handler destructed during policy application to profile "
<< profile_.ToDebugString();
return;
}
if (remaining_policies_.empty())
return;
VLOG(2) << "Create new managed network configurations in profile"
<< profile_.ToDebugString() << ".";
// All profile entries were compared to policies. |remaining_policies_|
// contains all modified policies that didn't match any entry. For these
// remaining policies, new configurations have to be created.
for (std::set<std::string>::iterator it = remaining_policies_.begin();
it != remaining_policies_.end(); ++it) {
const base::DictionaryValue* policy = GetByGUID(all_policies_, *it);
DCHECK(policy);
VLOG(1) << "Creating new configuration managed by policy " << *it
<< " in profile " << profile_.ToDebugString() << ".";
CreateAndWriteNewShillConfiguration(
*it, *policy, NULL /* no user settings */);
}
}
} // namespace chromeos
|
