84 lines
1.8 KiB
Go
84 lines
1.8 KiB
Go
package lnurl
|
|
|
|
import (
|
|
"errors"
|
|
"io/ioutil"
|
|
"net/http"
|
|
"net/url"
|
|
"strings"
|
|
|
|
"github.com/tidwall/gjson"
|
|
)
|
|
|
|
// HandleLNURL takes a bech32-encoded lnurl and either gets its parameters from the query-
|
|
// string or calls the URL to get the parameters.
|
|
// Returns a different struct for each of the lnurl subprotocols, the .LNURLKind() method of
|
|
// which should be checked next to see how the wallet is going to proceed.
|
|
func HandleLNURL(rawlnurl string) (string, LNURLParams, error) {
|
|
var err error
|
|
var rawurl string
|
|
|
|
if strings.HasPrefix(rawlnurl, "https:") {
|
|
rawurl = rawlnurl
|
|
} else {
|
|
lnurl, ok := FindLNURLInText(rawlnurl)
|
|
if !ok {
|
|
return "", nil, errors.New("invalid bech32-encoded lnurl: " + rawlnurl)
|
|
}
|
|
rawurl, err = LNURLDecode(lnurl)
|
|
if err != nil {
|
|
return "", nil, err
|
|
}
|
|
}
|
|
|
|
parsed, err := url.Parse(rawurl)
|
|
if err != nil {
|
|
return rawurl, nil, err
|
|
}
|
|
|
|
query := parsed.Query()
|
|
|
|
switch query.Get("tag") {
|
|
case "login":
|
|
value, err := HandleAuth(rawurl, parsed, query)
|
|
return rawurl, value, err
|
|
case "withdrawRequest":
|
|
if value, ok := HandleFastWithdraw(query); ok {
|
|
return rawurl, value, nil
|
|
}
|
|
}
|
|
|
|
resp, err := http.Get(rawurl)
|
|
if err != nil {
|
|
return rawurl, nil, err
|
|
}
|
|
|
|
b, err := ioutil.ReadAll(resp.Body)
|
|
if err != nil {
|
|
return rawurl, nil, err
|
|
}
|
|
|
|
j := gjson.ParseBytes(b)
|
|
if j.Get("status").String() == "ERROR" {
|
|
return rawurl, nil, LNURLErrorResponse{
|
|
URL: parsed,
|
|
Reason: j.Get("reason").String(),
|
|
Status: "ERROR",
|
|
}
|
|
}
|
|
|
|
switch j.Get("tag").String() {
|
|
case "withdrawRequest":
|
|
value, err := HandleWithdraw(j)
|
|
return rawurl, value, err
|
|
case "payRequest":
|
|
value, err := HandlePay(j)
|
|
return rawurl, value, err
|
|
case "channelRequest":
|
|
value, err := HandleChannel(j)
|
|
return rawurl, value, err
|
|
default:
|
|
return rawurl, nil, errors.New("unknown response tag " + j.String())
|
|
}
|
|
}
|