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binwiederhier-ntfy/server/server_twilio.go
2023-05-06 14:23:48 -04:00

113 lines
3.4 KiB
Go

package server
import (
"bytes"
"encoding/xml"
"fmt"
"github.com/prometheus/client_golang/prometheus"
"heckel.io/ntfy/log"
"heckel.io/ntfy/util"
"io"
"net/http"
"net/url"
"strings"
)
const (
twilioMessageEndpoint = "Messages.json"
twilioMessageFooterFormat = "This message was sent by %s via %s"
twilioCallEndpoint = "Calls.json"
twilioCallFormat = `
<Response>
<Pause length="1"/>
<Say>You have a message from notify on topic %s. Message:</Say>
<Pause length="1"/>
<Say>%s</Say>
<Pause length="1"/>
<Say>End message.</Say>
<Pause length="1"/>
<Say>%s</Say>
<Pause length="1"/>
</Response>`
)
func (s *Server) sendSMS(v *visitor, r *http.Request, m *message, to string) {
body := fmt.Sprintf("%s\n\n--\n%s", m.Message, s.messageFooter(m))
data := url.Values{}
data.Set("From", s.config.TwilioFromNumber)
data.Set("To", to)
data.Set("Body", body)
s.performTwilioRequest(v, r, m, metricSMSSentSuccess, metricSMSSentFailure, twilioMessageEndpoint, to, body, data)
}
func (s *Server) callPhone(v *visitor, r *http.Request, m *message, to string) {
body := fmt.Sprintf(twilioCallFormat, xmlEscapeText(m.Topic), xmlEscapeText(m.Message), xmlEscapeText(s.messageFooter(m)))
data := url.Values{}
data.Set("From", s.config.TwilioFromNumber)
data.Set("To", to)
data.Set("Twiml", body)
s.performTwilioRequest(v, r, m, metricCallsMadeSuccess, metricCallsMadeFailure, twilioCallEndpoint, to, body, data)
}
func (s *Server) performTwilioRequest(v *visitor, r *http.Request, m *message, msuccess, mfailure prometheus.Counter, endpoint, to, body string, data url.Values) {
logContext := log.Context{
"twilio_from": s.config.TwilioFromNumber,
"twilio_to": to,
}
ev := logvrm(v, r, m).Tag(tagTwilio).Fields(logContext)
if ev.IsTrace() {
ev.Field("twilio_body", body).Trace("Sending Twilio request")
} else if ev.IsDebug() {
ev.Debug("Sending Twilio request")
}
response, err := s.performTwilioRequestInternal(endpoint, data)
if err != nil {
ev.
Field("twilio_body", body).
Field("twilio_response", response).
Err(err).
Warn("Error sending Twilio request")
minc(mfailure)
return
}
if ev.IsTrace() {
ev.Field("twilio_response", response).Trace("Received successful Twilio response")
} else if ev.IsDebug() {
ev.Debug("Received successful Twilio response")
}
minc(msuccess)
}
func (s *Server) performTwilioRequestInternal(endpoint string, data url.Values) (string, error) {
requestURL := fmt.Sprintf("%s/2010-04-01/Accounts/%s/%s", s.config.TwilioBaseURL, s.config.TwilioAccount, endpoint)
req, err := http.NewRequest(http.MethodPost, requestURL, strings.NewReader(data.Encode()))
if err != nil {
return "", err
}
req.Header.Set("Authorization", util.BasicAuth(s.config.TwilioAccount, s.config.TwilioAuthToken))
req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
resp, err := http.DefaultClient.Do(req)
if err != nil {
return "", err
}
response, err := io.ReadAll(resp.Body)
if err != nil {
return "", err
}
return string(response), nil
}
func (s *Server) messageFooter(m *message) string {
topicURL := s.config.BaseURL + "/" + m.Topic
sender := m.Sender.String()
if m.User != "" {
sender = fmt.Sprintf("%s (%s)", m.User, m.Sender)
}
return fmt.Sprintf(twilioMessageFooterFormat, sender, util.ShortTopicURL(topicURL))
}
func xmlEscapeText(text string) string {
var buf bytes.Buffer
_ = xml.EscapeText(&buf, []byte(text))
return buf.String()
}