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
|
package imap
import (
"fmt"
"net/url"
"strings"
imapClient "github.com/emersion/go-imap/client"
"github.com/Necoro/feed2imap-go/pkg/log"
)
func newImapClient(url *URL, forceTls bool) (*imapClient.Client, error) {
var (
c *imapClient.Client
err error
)
if forceTls {
if c, err = imapClient.DialTLS(url.Host, nil); err != nil {
return nil, fmt.Errorf("connecting (TLS) to %s: %w", url.Host, err)
}
log.Print("Connected to ", url.Host, " (TLS)")
} else {
if c, err = imapClient.Dial(url.Host); err != nil {
return nil, fmt.Errorf("connecting to %s: %w", url.Host, err)
}
}
return c, nil
}
func (cl *Client) connect(url *URL, forceTls bool) (*connection, error) {
c, err := newImapClient(url, forceTls)
if err != nil {
return nil, err
}
conn := cl.createConnection(c)
if !forceTls {
if err = conn.startTls(); err != nil {
return nil, err
}
}
pwd, _ := url.User.Password()
if err = c.Login(url.User.Username(), pwd); err != nil {
return nil, fmt.Errorf("login to %s: %w", url.Host, err)
}
return conn, nil
}
func Connect(_url *url.URL) (*Client, error) {
var err error
url := NewUrl(_url)
forceTls := url.ForceTLS()
client := NewClient()
client.host = url.Host
defer func() {
if err != nil {
client.Disconnect()
}
}()
var conn *connection // the main connection
if conn, err = client.connect(url, forceTls); err != nil {
return nil, err
}
delim, err := conn.fetchDelimiter()
if err != nil {
return nil, fmt.Errorf("fetching delimiter: %w", err)
}
client.delimiter = delim
toplevel := url.Path
if toplevel[0] == '/' {
toplevel = toplevel[1:]
}
client.toplevel = client.folderName(strings.Split(toplevel, "/"))
log.Printf("Determined '%s' as toplevel, with '%s' as delimiter", client.toplevel, client.delimiter)
if err = conn.ensureFolder(client.toplevel); err != nil {
return nil, err
}
// the other connections
for i := 1; i < len(client.connections); i++ {
if _, err := client.connect(url, forceTls); err != nil { // explicitly new var 'err', b/c these are now harmless
log.Warnf("connecting #%d: %s", i, err)
}
}
client.startCommander()
return client, nil
}
|
