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
|
/* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* Copyright © 2017 Gabriel Ivascu <ivascu.gabriel59@gmail.com>
*
* This file is part of Epiphany.
*
* Epiphany is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Epiphany is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Epiphany. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "ephy-synchronizable.h"
G_DEFINE_INTERFACE (EphySynchronizable, ephy_synchronizable, JSON_TYPE_SERIALIZABLE);
static void
ephy_synchronizable_default_init (EphySynchronizableInterface *iface)
{
iface->get_id = ephy_synchronizable_get_id;
iface->get_server_time_modified = ephy_synchronizable_get_server_time_modified;
iface->set_server_time_modified = ephy_synchronizable_set_server_time_modified;
iface->to_bso = ephy_synchronizable_to_bso;
}
/**
* ephy_synchronizable_get_id:
* @synchronizable: an #EphySynchronizable
*
* Returns @synchronizable's id.
*
* Return value: (transfer none): @synchronizable's id
**/
const char *
ephy_synchronizable_get_id (EphySynchronizable *synchronizable)
{
EphySynchronizableInterface *iface;
g_return_val_if_fail (EPHY_IS_SYNCHRONIZABLE (synchronizable), NULL);
iface = EPHY_SYNCHRONIZABLE_GET_IFACE (synchronizable);
return iface->get_id (synchronizable);
}
/**
* ephy_synchronizable_get_server_time_modified:
* @synchronizable: an #EphySynchronizable
*
* Returns @synchronizable's last modification time on the storage server.
*
* Return value: @synchronizable's last modification time
**/
double
ephy_synchronizable_get_server_time_modified (EphySynchronizable *synchronizable)
{
EphySynchronizableInterface *iface;
g_return_val_if_fail (EPHY_IS_SYNCHRONIZABLE (synchronizable), 0);
iface = EPHY_SYNCHRONIZABLE_GET_IFACE (synchronizable);
return iface->get_server_time_modified (synchronizable);
}
/**
* ephy_synchronizable_set_server_time_modified:
* @synchronizable: an #EphySynchronizable
* @server_time_modified: the last modification time on the storage server
*
* Sets @server_time_modified as @synchronizable's last modification time.
**/
void
ephy_synchronizable_set_server_time_modified (EphySynchronizable *synchronizable,
double server_time_modified)
{
EphySynchronizableInterface *iface;
g_return_if_fail (EPHY_IS_SYNCHRONIZABLE (synchronizable));
iface = EPHY_SYNCHRONIZABLE_GET_IFACE (synchronizable);
iface->set_server_time_modified (synchronizable, server_time_modified);
}
/**
* ephy_synchronizable_to_bso:
* @synchronizable: an #EphySynchronizable
* @bundle: a %SyncCryptoKeyBundle holding the encryption key and the HMAC key
* used to validate and encrypt the Basic Storage Object
*
* Converts an #EphySynchronizable into its JSON string representation
* of a Basic Storage Object from the client's point of view
* (i.e. the %modified field is missing). Check the BSO format documentation
* (https://docs.services.mozilla.com/storage/apis-1.5.html#basic-storage-object)
* for more details.
*
* Return value: (transfer full): @synchronizable's BSO representation as a #JsonNode
**/
JsonNode *
ephy_synchronizable_to_bso (EphySynchronizable *synchronizable,
SyncCryptoKeyBundle *bundle)
{
EphySynchronizableInterface *iface;
g_return_val_if_fail (EPHY_IS_SYNCHRONIZABLE (synchronizable), NULL);
g_return_val_if_fail (bundle, NULL);
iface = EPHY_SYNCHRONIZABLE_GET_IFACE (synchronizable);
return iface->to_bso (synchronizable, bundle);
}
/**
* ephy_synchronizable_from_bso:
* @bso: a #JsonNode representing the Basic Storage Object
* @gtype: the #GType of object to construct
* @bundle: a %SyncCryptoKeyBundle holding the encryption key and the HMAC key
* used to validate and decrypt the Basic Storage Object
* @is_deleted: return value for a flag that says whether the object
* was marked as deleted
*
* Converts a JSON object representing the Basic Storage Object
* from the server's point of view (i.e. the %modified field is present)
* into an object of type @gtype. See the BSO format documentation
* (https://docs.services.mozilla.com/storage/apis-1.5.html#basic-storage-object)
* for more details.
*
* Note: The @gtype must be a sub-type of #EphySynchronizable (i.e. must
* implement the #EphySynchronizable interface). It is up to the caller to cast
* the returned #GObject to the type of @gtype.
*
* Return value: (transfer full): a #GObject or %NULL
**/
GObject *
ephy_synchronizable_from_bso (JsonNode *bso,
GType gtype,
SyncCryptoKeyBundle *bundle,
gboolean *is_deleted)
{
GObject *object = NULL;
GError *error = NULL;
JsonNode *node = NULL;
JsonObject *json;
char *serialized = NULL;
const char *payload = NULL;
double server_time_modified;
g_return_val_if_fail (bso, NULL);
g_return_val_if_fail (bundle, NULL);
g_return_val_if_fail (is_deleted, NULL);
json = json_node_get_object (bso);
if (!json) {
g_warning ("JSON node does not hold a JSON object");
goto out;
}
payload = json_object_get_string_member (json, "payload");
server_time_modified = json_object_get_double_member (json, "modified");
if (!payload || !server_time_modified) {
g_warning ("JSON object has missing or invalid members");
goto out;
}
serialized = ephy_sync_crypto_decrypt_record (payload, bundle);
if (!serialized) {
g_warning ("Failed to decrypt the BSO payload");
goto out;
}
node = json_from_string (serialized, &error);
if (error) {
g_warning ("Decrypted text is not a valid JSON: %s", error->message);
goto out;
}
json = json_node_get_object (node);
if (!json) {
g_warning ("Decrypted JSON node does not hold a JSON object");
goto out;
}
*is_deleted = json_object_has_member (json, "deleted");
object = json_gobject_from_data (gtype, serialized, -1, &error);
if (error) {
g_warning ("Failed to create GObject from BSO: %s", error->message);
goto out;
}
ephy_synchronizable_set_server_time_modified (EPHY_SYNCHRONIZABLE (object),
server_time_modified);
out:
if (node)
json_node_unref (node);
if (error)
g_error_free (error);
g_free (serialized);
return object;
}
/**
* ephy_synchronizable_default_to_bso:
* @synchronizable: an #EphySynchronizable
* @bundle: a %SyncCryptoKeyBundle holding the encryption key and the HMAC key
* used to validate and encrypt the Basic Storage Object
*
* Calls the default implementation of the #EphySynchronizable
* #EphySynchronizableInterface.to_bso() virtual function.
*
* This function can be used inside a custom implementation of the
* #EphySynchronizableInterface.to_bso() virtual function in lieu of
* calling the default implementation through g_type_default_interface_peek().
*
* Return value: (transfer full): @synchronizable's BSO representation as a #JsonNode
**/
JsonNode *
ephy_synchronizable_default_to_bso (EphySynchronizable *synchronizable,
SyncCryptoKeyBundle *bundle)
{
JsonNode *bso;
JsonObject *object;
char *serialized;
char *payload;
g_return_val_if_fail (EPHY_IS_SYNCHRONIZABLE (synchronizable), NULL);
g_return_val_if_fail (bundle, NULL);
serialized = json_gobject_to_data (G_OBJECT (synchronizable), NULL);
payload = ephy_sync_crypto_encrypt_record (serialized, bundle);
bso = json_node_new (JSON_NODE_OBJECT);
object = json_object_new ();
json_object_set_string_member (object, "id", ephy_synchronizable_get_id (synchronizable));
json_object_set_string_member (object, "payload", payload);
json_node_set_object (bso, object);
json_object_unref (object);
g_free (payload);
g_free (serialized);
return bso;
}
|
