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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 "sync/internal_api/public/base_node.h" | |
6 | |
7 #include <stdint.h> | |
8 | |
9 #include <stack> | |
10 | |
11 #include "base/strings/string_number_conversions.h" | |
12 #include "base/strings/utf_string_conversions.h" | |
13 #include "sync/internal_api/public/base_transaction.h" | |
14 #include "sync/internal_api/syncapi_internal.h" | |
15 #include "sync/protocol/app_specifics.pb.h" | |
16 #include "sync/protocol/autofill_specifics.pb.h" | |
17 #include "sync/protocol/bookmark_specifics.pb.h" | |
18 #include "sync/protocol/extension_specifics.pb.h" | |
19 #include "sync/protocol/nigori_specifics.pb.h" | |
20 #include "sync/protocol/password_specifics.pb.h" | |
21 #include "sync/protocol/session_specifics.pb.h" | |
22 #include "sync/protocol/theme_specifics.pb.h" | |
23 #include "sync/protocol/typed_url_specifics.pb.h" | |
24 #include "sync/syncable/directory.h" | |
25 #include "sync/syncable/entry.h" | |
26 #include "sync/syncable/syncable_base_transaction.h" | |
27 #include "sync/syncable/syncable_id.h" | |
28 #include "sync/util/time.h" | |
29 | |
30 using sync_pb::AutofillProfileSpecifics; | |
31 | |
32 namespace syncer { | |
33 | |
34 using syncable::SPECIFICS; | |
35 | |
36 // Helper function to look up the int64_t metahandle of an object given the ID | |
37 // string. | |
38 static int64_t IdToMetahandle(syncable::BaseTransaction* trans, | |
39 const syncable::Id& id) { | |
40 if (id.IsNull()) | |
41 return kInvalidId; | |
42 syncable::Entry entry(trans, syncable::GET_BY_ID, id); | |
43 if (!entry.good()) | |
44 return kInvalidId; | |
45 return entry.GetMetahandle(); | |
46 } | |
47 | |
48 BaseNode::BaseNode() : password_data_(new sync_pb::PasswordSpecificsData) {} | |
49 | |
50 BaseNode::~BaseNode() {} | |
51 | |
52 bool BaseNode::DecryptIfNecessary() { | |
53 if (GetIsPermanentFolder()) | |
54 return true; // Ignore unique folders. | |
55 const sync_pb::EntitySpecifics& specifics = | |
56 GetEntry()->GetSpecifics(); | |
57 if (specifics.has_password()) { | |
58 // Passwords have their own legacy encryption structure. | |
59 std::unique_ptr<sync_pb::PasswordSpecificsData> data( | |
60 DecryptPasswordSpecifics(specifics, | |
61 GetTransaction()->GetCryptographer())); | |
62 if (!data) { | |
63 GetTransaction()->GetWrappedTrans()->OnUnrecoverableError( | |
64 FROM_HERE, std::string("Failed to decrypt encrypted node of type ") + | |
65 ModelTypeToString(GetModelType())); | |
66 return false; | |
67 } | |
68 password_data_.swap(data); | |
69 return true; | |
70 } | |
71 | |
72 // We assume any node with the encrypted field set has encrypted data and if | |
73 // not we have no work to do, with the exception of bookmarks. For bookmarks | |
74 // we must make sure the bookmarks data has the title field supplied. If not, | |
75 // we fill the unencrypted_data_ with a copy of the bookmark specifics that | |
76 // follows the new bookmarks format. | |
77 if (!specifics.has_encrypted()) { | |
78 if (GetModelType() == BOOKMARKS && | |
79 !specifics.bookmark().has_title() && | |
80 !GetTitle().empty()) { // Last check ensures this isn't a new node. | |
81 // We need to fill in the title. | |
82 std::string title = GetTitle(); | |
83 std::string server_legal_title; | |
84 SyncAPINameToServerName(title, &server_legal_title); | |
85 DVLOG(1) << "Reading from legacy bookmark, manually returning title " | |
86 << title; | |
87 unencrypted_data_.CopyFrom(specifics); | |
88 unencrypted_data_.mutable_bookmark()->set_title( | |
89 server_legal_title); | |
90 } | |
91 return true; | |
92 } | |
93 | |
94 const sync_pb::EncryptedData& encrypted = specifics.encrypted(); | |
95 std::string plaintext_data = GetTransaction()->GetCryptographer()-> | |
96 DecryptToString(encrypted); | |
97 if (plaintext_data.length() == 0) { | |
98 GetTransaction()->GetWrappedTrans()->OnUnrecoverableError( | |
99 FROM_HERE, std::string("Failed to decrypt encrypted node of type ") + | |
100 ModelTypeToString(GetModelType())); | |
101 return false; | |
102 } else if (!unencrypted_data_.ParseFromString(plaintext_data)) { | |
103 GetTransaction()->GetWrappedTrans()->OnUnrecoverableError( | |
104 FROM_HERE, std::string("Failed to parse encrypted node of type ") + | |
105 ModelTypeToString(GetModelType())); | |
106 return false; | |
107 } | |
108 DVLOG(2) << "Decrypted specifics of type " | |
109 << ModelTypeToString(GetModelType()) | |
110 << " with content: " << plaintext_data; | |
111 return true; | |
112 } | |
113 | |
114 const sync_pb::EntitySpecifics& BaseNode::GetUnencryptedSpecifics( | |
115 const syncable::Entry* entry) const { | |
116 const sync_pb::EntitySpecifics& specifics = entry->GetSpecifics(); | |
117 if (specifics.has_encrypted()) { | |
118 DCHECK_NE(GetModelTypeFromSpecifics(unencrypted_data_), UNSPECIFIED); | |
119 return unencrypted_data_; | |
120 } else { | |
121 // Due to the change in bookmarks format, we need to check to see if this is | |
122 // a legacy bookmarks (and has no title field in the proto). If it is, we | |
123 // return the unencrypted_data_, which was filled in with the title by | |
124 // DecryptIfNecessary(). | |
125 if (GetModelType() == BOOKMARKS) { | |
126 const sync_pb::BookmarkSpecifics& bookmark_specifics = | |
127 specifics.bookmark(); | |
128 if (bookmark_specifics.has_title() || | |
129 GetTitle().empty() || // For the empty node case | |
130 GetIsPermanentFolder()) { | |
131 // It's possible we previously had to convert and set | |
132 // |unencrypted_data_| but then wrote our own data, so we allow | |
133 // |unencrypted_data_| to be non-empty. | |
134 return specifics; | |
135 } else { | |
136 DCHECK_EQ(GetModelTypeFromSpecifics(unencrypted_data_), BOOKMARKS); | |
137 return unencrypted_data_; | |
138 } | |
139 } else { | |
140 DCHECK_EQ(GetModelTypeFromSpecifics(unencrypted_data_), UNSPECIFIED); | |
141 return specifics; | |
142 } | |
143 } | |
144 } | |
145 | |
146 int64_t BaseNode::GetParentId() const { | |
147 return IdToMetahandle(GetTransaction()->GetWrappedTrans(), | |
148 GetEntry()->GetParentId()); | |
149 } | |
150 | |
151 int64_t BaseNode::GetId() const { | |
152 return GetEntry()->GetMetahandle(); | |
153 } | |
154 | |
155 base::Time BaseNode::GetModificationTime() const { | |
156 return GetEntry()->GetMtime(); | |
157 } | |
158 | |
159 bool BaseNode::GetIsFolder() const { | |
160 return GetEntry()->GetIsDir(); | |
161 } | |
162 | |
163 bool BaseNode::GetIsPermanentFolder() const { | |
164 bool is_permanent_folder = !GetEntry()->GetUniqueServerTag().empty(); | |
165 if (is_permanent_folder) { | |
166 // If the node is a permanent folder it must also have IS_DIR bit set, | |
167 // except some nigori nodes on old accounts. | |
168 DCHECK(GetIsFolder() || GetModelType() == NIGORI); | |
169 } | |
170 return is_permanent_folder; | |
171 } | |
172 | |
173 std::string BaseNode::GetTitle() const { | |
174 std::string result; | |
175 // TODO(zea): refactor bookmarks to not need this functionality. | |
176 if (BOOKMARKS == GetModelType() && | |
177 GetEntry()->GetSpecifics().has_encrypted()) { | |
178 // Special case for legacy bookmarks dealing with encryption. | |
179 ServerNameToSyncAPIName(GetBookmarkSpecifics().title(), &result); | |
180 } else { | |
181 ServerNameToSyncAPIName(GetEntry()->GetNonUniqueName(), | |
182 &result); | |
183 } | |
184 return result; | |
185 } | |
186 | |
187 bool BaseNode::HasChildren() const { | |
188 syncable::Directory* dir = GetTransaction()->GetDirectory(); | |
189 syncable::BaseTransaction* trans = GetTransaction()->GetWrappedTrans(); | |
190 return dir->HasChildren(trans, GetEntry()->GetId()); | |
191 } | |
192 | |
193 int64_t BaseNode::GetPredecessorId() const { | |
194 syncable::Id id_string = GetEntry()->GetPredecessorId(); | |
195 if (id_string.IsNull()) | |
196 return kInvalidId; | |
197 return IdToMetahandle(GetTransaction()->GetWrappedTrans(), id_string); | |
198 } | |
199 | |
200 int64_t BaseNode::GetSuccessorId() const { | |
201 syncable::Id id_string = GetEntry()->GetSuccessorId(); | |
202 if (id_string.IsNull()) | |
203 return kInvalidId; | |
204 return IdToMetahandle(GetTransaction()->GetWrappedTrans(), id_string); | |
205 } | |
206 | |
207 int64_t BaseNode::GetFirstChildId() const { | |
208 syncable::Id id_string = GetEntry()->GetFirstChildId(); | |
209 if (id_string.IsNull()) | |
210 return kInvalidId; | |
211 return IdToMetahandle(GetTransaction()->GetWrappedTrans(), id_string); | |
212 } | |
213 | |
214 void BaseNode::GetChildIds(std::vector<int64_t>* result) const { | |
215 GetEntry()->GetChildHandles(result); | |
216 } | |
217 | |
218 int BaseNode::GetTotalNodeCount() const { | |
219 return GetEntry()->GetTotalNodeCount(); | |
220 } | |
221 | |
222 int BaseNode::GetPositionIndex() const { | |
223 return GetEntry()->GetPositionIndex(); | |
224 } | |
225 | |
226 base::DictionaryValue* BaseNode::ToValue() const { | |
227 return GetEntry()->ToValue(GetTransaction()->GetCryptographer()); | |
228 } | |
229 | |
230 int64_t BaseNode::GetExternalId() const { | |
231 return GetEntry()->GetLocalExternalId(); | |
232 } | |
233 | |
234 const syncable::Id& BaseNode::GetSyncId() const { | |
235 return GetEntry()->GetId(); | |
236 } | |
237 | |
238 const sync_pb::BookmarkSpecifics& BaseNode::GetBookmarkSpecifics() const { | |
239 DCHECK_EQ(GetModelType(), BOOKMARKS); | |
240 return GetEntitySpecifics().bookmark(); | |
241 } | |
242 | |
243 const sync_pb::NigoriSpecifics& BaseNode::GetNigoriSpecifics() const { | |
244 DCHECK_EQ(GetModelType(), NIGORI); | |
245 return GetEntitySpecifics().nigori(); | |
246 } | |
247 | |
248 const sync_pb::PasswordSpecificsData& BaseNode::GetPasswordSpecifics() const { | |
249 DCHECK_EQ(GetModelType(), PASSWORDS); | |
250 return *password_data_; | |
251 } | |
252 | |
253 const sync_pb::TypedUrlSpecifics& BaseNode::GetTypedUrlSpecifics() const { | |
254 DCHECK_EQ(GetModelType(), TYPED_URLS); | |
255 return GetEntitySpecifics().typed_url(); | |
256 } | |
257 | |
258 const sync_pb::ExperimentsSpecifics& BaseNode::GetExperimentsSpecifics() const { | |
259 DCHECK_EQ(GetModelType(), EXPERIMENTS); | |
260 return GetEntitySpecifics().experiments(); | |
261 } | |
262 | |
263 const sync_pb::EntitySpecifics& BaseNode::GetEntitySpecifics() const { | |
264 return GetUnencryptedSpecifics(GetEntry()); | |
265 } | |
266 | |
267 ModelType BaseNode::GetModelType() const { | |
268 return GetEntry()->GetModelType(); | |
269 } | |
270 | |
271 const syncer::AttachmentIdList BaseNode::GetAttachmentIds() const { | |
272 AttachmentIdList result; | |
273 const sync_pb::AttachmentMetadata& metadata = | |
274 GetEntry()->GetAttachmentMetadata(); | |
275 for (int i = 0; i < metadata.record_size(); ++i) { | |
276 result.push_back(AttachmentId::CreateFromProto(metadata.record(i).id())); | |
277 } | |
278 return result; | |
279 } | |
280 | |
281 void BaseNode::SetUnencryptedSpecifics( | |
282 const sync_pb::EntitySpecifics& specifics) { | |
283 ModelType type = GetModelTypeFromSpecifics(specifics); | |
284 DCHECK_NE(UNSPECIFIED, type); | |
285 if (GetModelType() != UNSPECIFIED) { | |
286 DCHECK_EQ(GetModelType(), type); | |
287 } | |
288 unencrypted_data_.CopyFrom(specifics); | |
289 } | |
290 | |
291 } // namespace syncer | |
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