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
|
package federation
import "net/url"
func (f *federator) Handshaking(username string, remoteAccountID *url.URL) bool {
f.handshakeSync.Lock()
defer f.handshakeSync.Unlock()
if f.handshakes == nil {
// handshakes isn't even initialized yet so we can't be handshaking with anyone
return false
}
remoteIDs, ok := f.handshakes[username]
if !ok {
// user isn't handshaking with anyone, bail
return false
}
for _, id := range remoteIDs {
if id.String() == remoteAccountID.String() {
// we are currently handshaking with the remote account, yep
return true
}
}
// didn't find it which means we're not handshaking
return false
}
func (f *federator) startHandshake(username string, remoteAccountID *url.URL) {
f.handshakeSync.Lock()
defer f.handshakeSync.Unlock()
// lazily initialize handshakes
if f.handshakes == nil {
f.handshakes = make(map[string][]*url.URL)
}
remoteIDs, ok := f.handshakes[username]
if !ok {
// there was nothing in there yet, so just add this entry and return
f.handshakes[username] = []*url.URL{remoteAccountID}
return
}
// add the remote ID to the slice
remoteIDs = append(remoteIDs, remoteAccountID)
f.handshakes[username] = remoteIDs
}
func (f *federator) stopHandshake(username string, remoteAccountID *url.URL) {
f.handshakeSync.Lock()
defer f.handshakeSync.Unlock()
if f.handshakes == nil {
return
}
remoteIDs, ok := f.handshakes[username]
if !ok {
// there was nothing in there yet anyway so just bail
return
}
newRemoteIDs := []*url.URL{}
for _, id := range remoteIDs {
if id.String() != remoteAccountID.String() {
newRemoteIDs = append(newRemoteIDs, id)
}
}
if len(newRemoteIDs) == 0 {
// there are no handshakes so just remove this user entry from the map and save a few bytes
delete(f.handshakes, username)
} else {
// there are still other handshakes ongoing
f.handshakes[username] = newRemoteIDs
}
}
|
