49 lines
1.1 KiB
Go
Executable file
49 lines
1.1 KiB
Go
Executable file
package main
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import (
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"crypto/rand"
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"encoding/base64"
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"html/template"
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"strings"
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)
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var (
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funcs = template.FuncMap{
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"sub": func(a, b int) int {
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return a - b
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},
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"add": func(a, b int) int {
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return a + b
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},
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}
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)
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func generateStrongRandomString(length int) string {
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bytes := make([]byte, length)
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_, err := rand.Read(bytes)
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if err != nil {
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printErr("Error generating random string: %v", err)
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}
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return base64.URLEncoding.EncodeToString(bytes)[:length]
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}
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// Checks if the URL already includes a protocol
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func hasProtocol(url string) bool {
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return strings.HasPrefix(url, "http://") || strings.HasPrefix(url, "https://")
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}
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// Checks if the domain is a local address
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func isLocalAddress(domain string) bool {
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return domain == "localhost" || strings.HasPrefix(domain, "127.") || strings.HasPrefix(domain, "192.168.") || strings.HasPrefix(domain, "10.")
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}
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// Ensures that HTTP or HTTPS is befor the adress if needed
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func addProtocol(domain string) string {
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if hasProtocol(domain) {
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return domain
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}
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if isLocalAddress(domain) {
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return "http://" + domain
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}
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return "https://" + domain
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}
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