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
|
using Dino.Entities;
using Gee;
using Signal;
using Xmpp;
namespace Dino.Plugins.Omemo {
public class AesGcmFileSender : StreamInteractionModule, FileSender, Object {
public static ModuleIdentity<Manager> IDENTITY = new ModuleIdentity<Manager>("http_files");
public string id { get { return IDENTITY.id; } }
private StreamInteractor stream_interactor;
private HashMap<Account, long> max_file_sizes = new HashMap<Account, long>(Account.hash_func, Account.equals_func);
public AesGcmFileSender(StreamInteractor stream_interactor) {
this.stream_interactor = stream_interactor;
stream_interactor.stream_negotiated.connect(on_stream_negotiated);
}
public void send_file(Conversation conversation, FileTransfer file_transfer) {
Xmpp.XmppStream? stream = stream_interactor.get_stream(file_transfer.account);
uint8[] buf = new uint8[256];
Array<uint8> data = new Array<uint8>(false, true, 0);
size_t len = -1;
do {
try {
len = file_transfer.input_stream.read(buf);
} catch (IOError error) {
warning(@"HTTP upload: IOError reading stream: $(error.message)");
file_transfer.state = FileTransfer.State.FAILED;
}
data.append_vals(buf, (uint) len);
} while(len > 0);
//Create a key and use it to encrypt the file
uint8[] iv = new uint8[16];
Plugin.get_context().randomize(iv);
uint8[] key = new uint8[32];
Plugin.get_context().randomize(key);
uint8[] ciphertext = aes_encrypt(Cipher.AES_GCM_NOPADDING, key, iv, data.data);
// Convert iv and key to hex
string iv_and_key = "";
foreach (uint8 byte in iv) iv_and_key += byte.to_string("%02x");
foreach (uint8 byte in key) iv_and_key += byte.to_string("%02x");
stream_interactor.module_manager.get_module(file_transfer.account, Xmpp.Xep.HttpFileUpload.Module.IDENTITY).request_slot(stream, file_transfer.server_file_name, (int) ciphertext.length, file_transfer.mime_type,
(stream, url_down, url_up) => {
Soup.Message message = new Soup.Message("PUT", url_up);
message.set_request(file_transfer.mime_type, Soup.MemoryUse.COPY, ciphertext);
Soup.Session session = new Soup.Session();
session.send_async.begin(message, null, (obj, res) => {
try {
session.send_async.end(res);
if (message.status_code >= 200 && message.status_code < 300) {
string aesgcm_link = url_down + "#" + iv_and_key;
aesgcm_link = "aesgcm://" + aesgcm_link.substring(8); // replace https:// by aesgcm://
file_transfer.info = aesgcm_link; // store the message content temporarily so the message gets filtered out
Entities.Message xmpp_message = stream_interactor.get_module(MessageProcessor.IDENTITY).create_out_message(aesgcm_link, conversation);
xmpp_message.encryption = Encryption.OMEMO;
stream_interactor.get_module(MessageProcessor.IDENTITY).send_message(xmpp_message, conversation);
file_transfer.info = xmpp_message.id.to_string();
ContentItem? content_item = stream_interactor.get_module(ContentItemStore.IDENTITY).get_item(conversation, 1, xmpp_message.id);
if (content_item != null) {
stream_interactor.get_module(ContentItemStore.IDENTITY).set_item_hide(content_item, true);
}
} else {
warning("HTTP upload status code " + message.status_code.to_string());
file_transfer.state = FileTransfer.State.FAILED;
}
} catch (Error e) {
warning("HTTP upload error: " + e.message);
file_transfer.state = FileTransfer.State.FAILED;
}
});
},
(stream, error) => {
warning("HTTP upload error: " + error);
file_transfer.state = FileTransfer.State.FAILED;
}
);
}
public bool can_send(Conversation conversation, FileTransfer file_transfer) {
return file_transfer.encryption == Encryption.OMEMO;
}
public bool is_upload_available(Conversation conversation) {
lock (max_file_sizes) {
return max_file_sizes.has_key(conversation.account);
}
}
private void on_stream_negotiated(Account account, XmppStream stream) {
stream_interactor.module_manager.get_module(account, Xmpp.Xep.HttpFileUpload.Module.IDENTITY).feature_available.connect((stream, max_file_size) => {
lock (max_file_sizes) {
max_file_sizes[account] = max_file_size;
}
upload_available(account);
});
}
}
}
|
