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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "components/sync/core/base_node.h" | |
6 | |
7 #include <stack> | |
8 | |
9 #include "base/strings/string_number_conversions.h" | |
10 #include "base/strings/utf_string_conversions.h" | |
11 #include "components/sync/base/time.h" | |
12 #include "components/sync/core/base_transaction.h" | |
13 #include "components/sync/core_impl/syncapi_internal.h" | |
14 #include "components/sync/protocol/app_specifics.pb.h" | |
15 #include "components/sync/protocol/autofill_specifics.pb.h" | |
16 #include "components/sync/protocol/bookmark_specifics.pb.h" | |
17 #include "components/sync/protocol/extension_specifics.pb.h" | |
18 #include "components/sync/protocol/nigori_specifics.pb.h" | |
19 #include "components/sync/protocol/password_specifics.pb.h" | |
20 #include "components/sync/protocol/session_specifics.pb.h" | |
21 #include "components/sync/protocol/theme_specifics.pb.h" | |
22 #include "components/sync/protocol/typed_url_specifics.pb.h" | |
23 #include "components/sync/syncable/directory.h" | |
24 #include "components/sync/syncable/entry.h" | |
25 #include "components/sync/syncable/syncable_base_transaction.h" | |
26 #include "components/sync/syncable/syncable_id.h" | |
27 | |
28 using sync_pb::AutofillProfileSpecifics; | |
29 | |
30 namespace syncer { | |
31 | |
32 using syncable::SPECIFICS; | |
33 | |
34 // Helper function to look up the int64_t metahandle of an object given the ID | |
35 // string. | |
36 static int64_t IdToMetahandle(syncable::BaseTransaction* trans, | |
37 const syncable::Id& id) { | |
38 if (id.IsNull()) | |
39 return kInvalidId; | |
40 syncable::Entry entry(trans, syncable::GET_BY_ID, id); | |
41 if (!entry.good()) | |
42 return kInvalidId; | |
43 return entry.GetMetahandle(); | |
44 } | |
45 | |
46 BaseNode::BaseNode() : password_data_(new sync_pb::PasswordSpecificsData) {} | |
47 | |
48 BaseNode::~BaseNode() {} | |
49 | |
50 bool BaseNode::DecryptIfNecessary() { | |
51 if (GetIsPermanentFolder()) | |
52 return true; // Ignore unique folders. | |
53 const sync_pb::EntitySpecifics& specifics = GetEntry()->GetSpecifics(); | |
54 if (specifics.has_password()) { | |
55 // Passwords have their own legacy encryption structure. | |
56 std::unique_ptr<sync_pb::PasswordSpecificsData> data( | |
57 DecryptPasswordSpecifics(specifics, | |
58 GetTransaction()->GetCryptographer())); | |
59 if (!data) { | |
60 GetTransaction()->GetWrappedTrans()->OnUnrecoverableError( | |
61 FROM_HERE, std::string("Failed to decrypt encrypted node of type ") + | |
62 ModelTypeToString(GetModelType())); | |
63 return false; | |
64 } | |
65 password_data_.swap(data); | |
66 return true; | |
67 } | |
68 | |
69 // We assume any node with the encrypted field set has encrypted data and if | |
70 // not we have no work to do, with the exception of bookmarks. For bookmarks | |
71 // we must make sure the bookmarks data has the title field supplied. If not, | |
72 // we fill the unencrypted_data_ with a copy of the bookmark specifics that | |
73 // follows the new bookmarks format. | |
74 if (!specifics.has_encrypted()) { | |
75 if (GetModelType() == BOOKMARKS && !specifics.bookmark().has_title() && | |
76 !GetTitle().empty()) { // Last check ensures this isn't a new node. | |
77 // We need to fill in the title. | |
78 std::string title = GetTitle(); | |
79 std::string server_legal_title; | |
80 SyncAPINameToServerName(title, &server_legal_title); | |
81 DVLOG(1) << "Reading from legacy bookmark, manually returning title " | |
82 << title; | |
83 unencrypted_data_.CopyFrom(specifics); | |
84 unencrypted_data_.mutable_bookmark()->set_title(server_legal_title); | |
85 } | |
86 return true; | |
87 } | |
88 | |
89 const sync_pb::EncryptedData& encrypted = specifics.encrypted(); | |
90 std::string plaintext_data = | |
91 GetTransaction()->GetCryptographer()->DecryptToString(encrypted); | |
92 if (plaintext_data.length() == 0) { | |
93 GetTransaction()->GetWrappedTrans()->OnUnrecoverableError( | |
94 FROM_HERE, std::string("Failed to decrypt encrypted node of type ") + | |
95 ModelTypeToString(GetModelType())); | |
96 return false; | |
97 } else if (!unencrypted_data_.ParseFromString(plaintext_data)) { | |
98 GetTransaction()->GetWrappedTrans()->OnUnrecoverableError( | |
99 FROM_HERE, std::string("Failed to parse encrypted node of type ") + | |
100 ModelTypeToString(GetModelType())); | |
101 return false; | |
102 } | |
103 DVLOG(2) << "Decrypted specifics of type " | |
104 << ModelTypeToString(GetModelType()) | |
105 << " with content: " << plaintext_data; | |
106 return true; | |
107 } | |
108 | |
109 const sync_pb::EntitySpecifics& BaseNode::GetUnencryptedSpecifics( | |
110 const syncable::Entry* entry) const { | |
111 const sync_pb::EntitySpecifics& specifics = entry->GetSpecifics(); | |
112 if (specifics.has_encrypted()) { | |
113 DCHECK_NE(GetModelTypeFromSpecifics(unencrypted_data_), UNSPECIFIED); | |
114 return unencrypted_data_; | |
115 } else { | |
116 // Due to the change in bookmarks format, we need to check to see if this is | |
117 // a legacy bookmarks (and has no title field in the proto). If it is, we | |
118 // return the unencrypted_data_, which was filled in with the title by | |
119 // DecryptIfNecessary(). | |
120 if (GetModelType() == BOOKMARKS) { | |
121 const sync_pb::BookmarkSpecifics& bookmark_specifics = | |
122 specifics.bookmark(); | |
123 if (bookmark_specifics.has_title() || | |
124 GetTitle().empty() || // For the empty node case | |
125 GetIsPermanentFolder()) { | |
126 // It's possible we previously had to convert and set | |
127 // |unencrypted_data_| but then wrote our own data, so we allow | |
128 // |unencrypted_data_| to be non-empty. | |
129 return specifics; | |
130 } else { | |
131 DCHECK_EQ(GetModelTypeFromSpecifics(unencrypted_data_), BOOKMARKS); | |
132 return unencrypted_data_; | |
133 } | |
134 } else { | |
135 DCHECK_EQ(GetModelTypeFromSpecifics(unencrypted_data_), UNSPECIFIED); | |
136 return specifics; | |
137 } | |
138 } | |
139 } | |
140 | |
141 int64_t BaseNode::GetParentId() const { | |
142 return IdToMetahandle(GetTransaction()->GetWrappedTrans(), | |
143 GetEntry()->GetParentId()); | |
144 } | |
145 | |
146 int64_t BaseNode::GetId() const { | |
147 return GetEntry()->GetMetahandle(); | |
148 } | |
149 | |
150 base::Time BaseNode::GetModificationTime() const { | |
151 return GetEntry()->GetMtime(); | |
152 } | |
153 | |
154 bool BaseNode::GetIsFolder() const { | |
155 return GetEntry()->GetIsDir(); | |
156 } | |
157 | |
158 bool BaseNode::GetIsPermanentFolder() const { | |
159 bool is_permanent_folder = !GetEntry()->GetUniqueServerTag().empty(); | |
160 if (is_permanent_folder) { | |
161 // If the node is a permanent folder it must also have IS_DIR bit set, | |
162 // except some nigori nodes on old accounts. | |
163 DCHECK(GetIsFolder() || GetModelType() == NIGORI); | |
164 } | |
165 return is_permanent_folder; | |
166 } | |
167 | |
168 std::string BaseNode::GetTitle() const { | |
169 std::string result; | |
170 // TODO(zea): refactor bookmarks to not need this functionality. | |
171 if (BOOKMARKS == GetModelType() && | |
172 GetEntry()->GetSpecifics().has_encrypted()) { | |
173 // Special case for legacy bookmarks dealing with encryption. | |
174 ServerNameToSyncAPIName(GetBookmarkSpecifics().title(), &result); | |
175 } else { | |
176 ServerNameToSyncAPIName(GetEntry()->GetNonUniqueName(), &result); | |
177 } | |
178 return result; | |
179 } | |
180 | |
181 bool BaseNode::HasChildren() const { | |
182 syncable::Directory* dir = GetTransaction()->GetDirectory(); | |
183 syncable::BaseTransaction* trans = GetTransaction()->GetWrappedTrans(); | |
184 return dir->HasChildren(trans, GetEntry()->GetId()); | |
185 } | |
186 | |
187 int64_t BaseNode::GetPredecessorId() const { | |
188 syncable::Id id_string = GetEntry()->GetPredecessorId(); | |
189 if (id_string.IsNull()) | |
190 return kInvalidId; | |
191 return IdToMetahandle(GetTransaction()->GetWrappedTrans(), id_string); | |
192 } | |
193 | |
194 int64_t BaseNode::GetSuccessorId() const { | |
195 syncable::Id id_string = GetEntry()->GetSuccessorId(); | |
196 if (id_string.IsNull()) | |
197 return kInvalidId; | |
198 return IdToMetahandle(GetTransaction()->GetWrappedTrans(), id_string); | |
199 } | |
200 | |
201 int64_t BaseNode::GetFirstChildId() const { | |
202 syncable::Id id_string = GetEntry()->GetFirstChildId(); | |
203 if (id_string.IsNull()) | |
204 return kInvalidId; | |
205 return IdToMetahandle(GetTransaction()->GetWrappedTrans(), id_string); | |
206 } | |
207 | |
208 void BaseNode::GetChildIds(std::vector<int64_t>* result) const { | |
209 GetEntry()->GetChildHandles(result); | |
210 } | |
211 | |
212 int BaseNode::GetTotalNodeCount() const { | |
213 return GetEntry()->GetTotalNodeCount(); | |
214 } | |
215 | |
216 int BaseNode::GetPositionIndex() const { | |
217 return GetEntry()->GetPositionIndex(); | |
218 } | |
219 | |
220 base::DictionaryValue* BaseNode::ToValue() const { | |
221 return GetEntry()->ToValue(GetTransaction()->GetCryptographer()); | |
222 } | |
223 | |
224 int64_t BaseNode::GetExternalId() const { | |
225 return GetEntry()->GetLocalExternalId(); | |
226 } | |
227 | |
228 const syncable::Id& BaseNode::GetSyncId() const { | |
229 return GetEntry()->GetId(); | |
230 } | |
231 | |
232 const sync_pb::BookmarkSpecifics& BaseNode::GetBookmarkSpecifics() const { | |
233 DCHECK_EQ(GetModelType(), BOOKMARKS); | |
234 return GetEntitySpecifics().bookmark(); | |
235 } | |
236 | |
237 const sync_pb::NigoriSpecifics& BaseNode::GetNigoriSpecifics() const { | |
238 DCHECK_EQ(GetModelType(), NIGORI); | |
239 return GetEntitySpecifics().nigori(); | |
240 } | |
241 | |
242 const sync_pb::PasswordSpecificsData& BaseNode::GetPasswordSpecifics() const { | |
243 DCHECK_EQ(GetModelType(), PASSWORDS); | |
244 return *password_data_; | |
245 } | |
246 | |
247 const sync_pb::TypedUrlSpecifics& BaseNode::GetTypedUrlSpecifics() const { | |
248 DCHECK_EQ(GetModelType(), TYPED_URLS); | |
249 return GetEntitySpecifics().typed_url(); | |
250 } | |
251 | |
252 const sync_pb::ExperimentsSpecifics& BaseNode::GetExperimentsSpecifics() const { | |
253 DCHECK_EQ(GetModelType(), EXPERIMENTS); | |
254 return GetEntitySpecifics().experiments(); | |
255 } | |
256 | |
257 const sync_pb::EntitySpecifics& BaseNode::GetEntitySpecifics() const { | |
258 return GetUnencryptedSpecifics(GetEntry()); | |
259 } | |
260 | |
261 ModelType BaseNode::GetModelType() const { | |
262 return GetEntry()->GetModelType(); | |
263 } | |
264 | |
265 const AttachmentIdList BaseNode::GetAttachmentIds() const { | |
266 AttachmentIdList result; | |
267 const sync_pb::AttachmentMetadata& metadata = | |
268 GetEntry()->GetAttachmentMetadata(); | |
269 for (int i = 0; i < metadata.record_size(); ++i) { | |
270 result.push_back(AttachmentId::CreateFromProto(metadata.record(i).id())); | |
271 } | |
272 return result; | |
273 } | |
274 | |
275 void BaseNode::SetUnencryptedSpecifics( | |
276 const sync_pb::EntitySpecifics& specifics) { | |
277 ModelType type = GetModelTypeFromSpecifics(specifics); | |
278 DCHECK_NE(UNSPECIFIED, type); | |
279 if (GetModelType() != UNSPECIFIED) { | |
280 DCHECK_EQ(GetModelType(), type); | |
281 } | |
282 unencrypted_data_.CopyFrom(specifics); | |
283 } | |
284 | |
285 } // namespace syncer | |
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