e2d5c456dc
This adds the ability for per-account signatures in the accounts.conf config file. The signature is added to emails in the editor at the bottom of the email. This includes when forwarding, replying to, and composing emails. There are two config options: signature-file and signature-cmd. The former allows a signature to be read from a file and the latter allows an arbitrary command to be executed to return the signature. The config options have been documented in aerc-config
113 lines
2.8 KiB
Go
113 lines
2.8 KiB
Go
package msg
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import (
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"bufio"
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"errors"
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"net/url"
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"strings"
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"git.sr.ht/~sircmpwn/aerc/lib"
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"git.sr.ht/~sircmpwn/aerc/widgets"
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)
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// Unsubscribe helps people unsubscribe from mailing lists by way of the
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// List-Unsubscribe header.
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type Unsubscribe struct{}
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func init() {
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register(Unsubscribe{})
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}
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// Aliases returns a list of aliases for the :unsubscribe command
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func (Unsubscribe) Aliases() []string {
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return []string{"unsubscribe"}
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}
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// Complete returns a list of completions
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func (Unsubscribe) Complete(aerc *widgets.Aerc, args []string) []string {
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return nil
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}
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// Execute runs the Unsubscribe command
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func (Unsubscribe) Execute(aerc *widgets.Aerc, args []string) error {
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if len(args) != 1 {
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return errors.New("Usage: unsubscribe")
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}
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widget := aerc.SelectedTab().(widgets.ProvidesMessage)
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msg, err := widget.SelectedMessage()
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if err != nil {
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return err
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}
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headers := msg.RFC822Headers
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if !headers.Has("list-unsubscribe") {
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return errors.New("No List-Unsubscribe header found")
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}
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methods := parseUnsubscribeMethods(headers.Get("list-unsubscribe"))
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aerc.Logger().Printf("found %d unsubscribe methods", len(methods))
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for _, method := range methods {
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aerc.Logger().Printf("trying to unsubscribe using %v", method)
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switch method.Scheme {
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case "mailto":
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return unsubscribeMailto(aerc, method)
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case "http", "https":
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return unsubscribeHTTP(method)
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default:
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aerc.Logger().Printf("skipping unrecognized scheme: %s", method.Scheme)
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}
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}
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return errors.New("no supported unsubscribe methods found")
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}
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// parseUnsubscribeMethods reads the list-unsubscribe header and parses it as a
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// list of angle-bracket <> deliminated URLs. See RFC 2369.
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func parseUnsubscribeMethods(header string) (methods []*url.URL) {
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r := bufio.NewReader(strings.NewReader(header))
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for {
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// discard until <
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_, err := r.ReadSlice('<')
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if err != nil {
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return
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}
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// read until <
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m, err := r.ReadSlice('>')
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if err != nil {
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return
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}
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m = m[:len(m)-1]
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if u, err := url.Parse(string(m)); err == nil {
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methods = append(methods, u)
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}
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}
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}
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func unsubscribeMailto(aerc *widgets.Aerc, u *url.URL) error {
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widget := aerc.SelectedTab().(widgets.ProvidesMessage)
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acct := widget.SelectedAccount()
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defaults := map[string]string{
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"To": u.Opaque,
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"Subject": u.Query().Get("subject"),
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}
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composer := widgets.NewComposer(
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aerc,
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aerc.Config(),
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acct.AccountConfig(),
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acct.Worker(),
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defaults,
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)
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composer.SetContents(strings.NewReader(u.Query().Get("body")))
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tab := aerc.NewTab(composer, "unsubscribe")
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composer.OnHeaderChange("Subject", func(subject string) {
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if subject == "" {
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tab.Name = "unsubscribe"
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} else {
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tab.Name = subject
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}
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tab.Content.Invalidate()
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})
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return nil
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}
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func unsubscribeHTTP(u *url.URL) error {
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return lib.OpenFile(u.String())
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}
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