ntfy/server/server_twilio.go
2023-05-16 14:15:58 -04:00

170 lines
5.5 KiB
Go

package server
import (
"bytes"
"encoding/xml"
"fmt"
"heckel.io/ntfy/log"
"heckel.io/ntfy/user"
"heckel.io/ntfy/util"
"io"
"net/http"
"net/url"
"strings"
)
const (
twilioCallFormat = `
<Response>
<Pause length="1"/>
<Say loop="3">
You have a notification from notify on topic %s. Message:
<break time="1s"/>
%s
<break time="1s"/>
End message.
<break time="1s"/>
This message was sent by user %s. It will be repeated up to three times.
<break time="3s"/>
</Say>
<Say>Goodbye.</Say>
</Response>`
)
// convertPhoneNumber checks if the given phone number is verified for the given user, and if so, returns the verified
// phone number. It also converts a boolean string ("yes", "1", "true") to the first verified phone number.
// If the user is anonymous, it will return an error.
func (s *Server) convertPhoneNumber(u *user.User, phoneNumber string) (string, *errHTTP) {
if u == nil {
return "", errHTTPBadRequestAnonymousCallsNotAllowed
}
phoneNumbers, err := s.userManager.PhoneNumbers(u.ID)
if err != nil {
return "", errHTTPInternalError
} else if len(phoneNumbers) == 0 {
return "", errHTTPBadRequestPhoneNumberNotVerified
}
if toBool(phoneNumber) {
return phoneNumbers[0], nil
} else if util.Contains(phoneNumbers, phoneNumber) {
return phoneNumber, nil
}
for _, p := range phoneNumbers {
if p == phoneNumber {
return phoneNumber, nil
}
}
return "", errHTTPBadRequestPhoneNumberNotVerified
}
func (s *Server) callPhone(v *visitor, r *http.Request, m *message, to string) {
u, sender := v.User(), m.Sender.String()
if u != nil {
sender = u.Name
}
body := fmt.Sprintf(twilioCallFormat, xmlEscapeText(m.Topic), xmlEscapeText(m.Message), xmlEscapeText(sender))
data := url.Values{}
data.Set("From", s.config.TwilioFromNumber)
data.Set("To", to)
data.Set("Twiml", body)
ev := logvrm(v, r, m).Tag(tagTwilio).Field("twilio_to", to).FieldIf("twilio_body", body, log.TraceLevel).Debug("Sending Twilio request")
response, err := s.callPhoneInternal(data)
if err != nil {
ev.Field("twilio_response", response).Err(err).Warn("Error sending Twilio request")
minc(metricCallsMadeFailure)
return
}
ev.FieldIf("twilio_response", response, log.TraceLevel).Debug("Received successful Twilio response")
minc(metricCallsMadeSuccess)
}
func (s *Server) callPhoneInternal(data url.Values) (string, error) {
requestURL := fmt.Sprintf("%s/2010-04-01/Accounts/%s/Calls.json", s.config.TwilioCallsBaseURL, s.config.TwilioAccount)
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) verifyPhoneNumber(v *visitor, r *http.Request, phoneNumber string) error {
ev := logvr(v, r).Tag(tagTwilio).Field("twilio_to", phoneNumber).Debug("Sending phone verification")
data := url.Values{}
data.Set("To", phoneNumber)
data.Set("Channel", "sms")
requestURL := fmt.Sprintf("%s/v2/Services/%s/Verifications", s.config.TwilioVerifyBaseURL, s.config.TwilioVerifyService)
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 {
ev.Err(err).Warn("Error sending Twilio phone verification request")
return err
}
ev.FieldIf("twilio_response", string(response), log.TraceLevel).Debug("Received Twilio phone verification response")
return nil
}
func (s *Server) verifyPhoneNumberCheck(v *visitor, r *http.Request, phoneNumber, code string) error {
ev := logvr(v, r).Tag(tagTwilio).Field("twilio_to", phoneNumber).Debug("Checking phone verification")
data := url.Values{}
data.Set("To", phoneNumber)
data.Set("Code", code)
requestURL := fmt.Sprintf("%s/v2/Services/%s/VerificationCheck", s.config.TwilioVerifyBaseURL, s.config.TwilioVerifyService)
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
} else if resp.StatusCode != http.StatusOK {
if ev.IsTrace() {
response, err := io.ReadAll(resp.Body)
if err != nil {
return err
}
ev.Field("twilio_response", string(response))
}
ev.Warn("Twilio phone verification failed with status code %d", resp.StatusCode)
if resp.StatusCode == http.StatusNotFound {
return errHTTPGonePhoneVerificationExpired
}
return errHTTPInternalError
}
response, err := io.ReadAll(resp.Body)
if err != nil {
return err
}
if ev.IsTrace() {
ev.Field("twilio_response", string(response)).Trace("Received successful Twilio phone verification response")
} else if ev.IsDebug() {
ev.Debug("Received successful Twilio phone verification response")
}
return nil
}
func xmlEscapeText(text string) string {
var buf bytes.Buffer
_ = xml.EscapeText(&buf, []byte(text))
return buf.String()
}