30 lines
675 B
Go
30 lines
675 B
Go
package lnurl
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import (
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"crypto/rand"
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"encoding/hex"
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"regexp"
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"strings"
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)
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var lnurlregex = regexp.MustCompile(`.*?((lnurl)([0-9]{1,}[a-z0-9]+){1})`)
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// FindLNURLInText uses a Regular Expression to find a bech32-encoded lnurl string in a blob of text.
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func FindLNURLInText(text string) (lnurl string, ok bool) {
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text = strings.ToLower(text)
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results := lnurlregex.FindStringSubmatch(text)
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if len(results) == 0 {
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return
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}
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return results[1], true
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}
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// RandomK1 returns a 32-byte random hex-encoded string for usage as k1 in lnurl-auth and anywhere else.
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func RandomK1() string {
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random := make([]byte, 32)
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rand.Read(random)
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return hex.EncodeToString(random)
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}
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