aboutsummaryrefslogtreecommitdiff
path: root/commands/compose/send.go
blob: e1d6b1e49be384c79babbd88f6e6da119ef80929 (plain)
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
package compose

import (
	"crypto/tls"
	"errors"
	"fmt"
	"io"
	"net/mail"
	"net/url"
	"strings"
	"time"

	"github.com/emersion/go-sasl"
	"github.com/emersion/go-smtp"
	"github.com/gdamore/tcell"
	"github.com/miolini/datacounter"

	"git.sr.ht/~sircmpwn/aerc2/widgets"
	"git.sr.ht/~sircmpwn/aerc2/worker/types"
)

func init() {
	register("send", SendMessage)
}

func SendMessage(aerc *widgets.Aerc, args []string) error {
	if len(args) > 1 {
		return errors.New("Usage: send-message")
	}
	composer, _ := aerc.SelectedTab().(*widgets.Composer)
	config := composer.Config()

	if config.Outgoing == "" {
		return errors.New(
			"No outgoing mail transport configured for this account")
	}

	uri, err := url.Parse(config.Outgoing)
	if err != nil {
		return err
	}
	var (
		scheme string
		auth   string = "plain"
	)
	parts := strings.Split(uri.Scheme, "+")
	if len(parts) == 1 {
		scheme = parts[0]
	} else if len(parts) == 2 {
		scheme = parts[0]
		auth = parts[1]
	} else {
		return fmt.Errorf("Unknown transfer protocol %s", uri.Scheme)
	}

	header, rcpts, err := composer.PrepareHeader()
	if err != nil {
		return err
	}

	if config.From == "" {
		return errors.New("No 'From' configured for this account")
	}
	from, err := mail.ParseAddress(config.From)
	if err != nil {
		return err
	}

	var (
		saslClient sasl.Client
		conn       *smtp.Client
	)
	switch auth {
	case "":
		fallthrough
	case "none":
		saslClient = nil
	case "plain":
		password, _ := uri.User.Password()
		saslClient = sasl.NewPlainClient("", uri.User.Username(), password)
	default:
		return fmt.Errorf("Unsupported auth mechanism %s", auth)
	}

	aerc.RemoveTab(composer)

	sendAsync := func() (int, error) {
		tlsConfig := &tls.Config{
			// TODO: ask user first
			InsecureSkipVerify: true,
		}
		switch scheme {
		case "smtp":
			host := uri.Host
			if !strings.ContainsRune(host, ':') {
				host = host + ":587" // Default to submission port
			}
			conn, err = smtp.Dial(host)
			if err != nil {
				aerc.PushStatus(" "+err.Error(), 10*time.Second).
					Color(tcell.ColorDefault, tcell.ColorRed)
				return 0, nil
			}
			defer conn.Close()
			if sup, _ := conn.Extension("STARTTLS"); sup {
				// TODO: let user configure tls?
				if err = conn.StartTLS(tlsConfig); err != nil {
					aerc.PushStatus(" "+err.Error(), 10*time.Second).
						Color(tcell.ColorDefault, tcell.ColorRed)
					return 0, nil
				}
			}
		case "smtps":
			host := uri.Host
			if !strings.ContainsRune(host, ':') {
				host = host + ":465" // Default to smtps port
			}
			conn, err = smtp.DialTLS(host, tlsConfig)
			if err != nil {
				aerc.PushStatus(" "+err.Error(), 10*time.Second).
					Color(tcell.ColorDefault, tcell.ColorRed)
				return 0, nil
			}
			defer conn.Close()
		}

		// TODO: sendmail
		if saslClient != nil {
			if err = conn.Auth(saslClient); err != nil {
				aerc.PushStatus(" "+err.Error(), 10*time.Second).
					Color(tcell.ColorDefault, tcell.ColorRed)
				return 0, nil
			}
		}
		// TODO: the user could conceivably want to use a different From and sender
		if err = conn.Mail(from.Address); err != nil {
			aerc.PushStatus(" "+err.Error(), 10*time.Second).
				Color(tcell.ColorDefault, tcell.ColorRed)
			return 0, nil
		}
		for _, rcpt := range rcpts {
			if err = conn.Rcpt(rcpt); err != nil {
				aerc.PushStatus(" "+err.Error(), 10*time.Second).
					Color(tcell.ColorDefault, tcell.ColorRed)
				return 0, nil
			}
		}
		wc, err := conn.Data()
		if err != nil {
			aerc.PushStatus(" "+err.Error(), 10*time.Second).
				Color(tcell.ColorDefault, tcell.ColorRed)
			return 0, nil
		}
		defer wc.Close()
		ctr := datacounter.NewWriterCounter(wc)
		composer.WriteMessage(header, ctr)
		return int(ctr.Count()), nil
	}

	go func() {
		aerc.SetStatus("Sending...")
		nbytes, err := sendAsync()
		if err != nil {
			aerc.PushStatus(" "+err.Error(), 10*time.Second).
				Color(tcell.ColorDefault, tcell.ColorRed)
			return
		}
		if config.CopyTo != "" {
			aerc.SetStatus("Copying to " + config.CopyTo)
			worker := composer.Worker()
			r, w := io.Pipe()
			worker.PostAction(&types.AppendMessage{
				Destination: config.CopyTo,
				Flags: []string{},
				Date: time.Now(),
				Reader: r,
				Length: nbytes,
			}, func(msg types.WorkerMessage) {
				switch msg := msg.(type) {
				case *types.Done:
					aerc.SetStatus("Sent.")
					r.Close()
					composer.Close()
				case *types.Error:
					aerc.PushStatus(" "+msg.Error.Error(), 10*time.Second).
						Color(tcell.ColorDefault, tcell.ColorRed)
					r.Close()
					composer.Close()
				}
			})
			header, _, _ := composer.PrepareHeader()
			composer.WriteMessage(header, w)
			w.Close()
		} else {
			aerc.SetStatus("Sent.")
			composer.Close()
		}
	}()
	return nil
}