package main import ( "net" "net/http" "sort" "strconv" "strings" ) // Helper to check if the IP is valid func isIP(s string) bool { return nil != net.ParseIP(s) } // Helper to check if the number is valid func isNumber(s string) bool { _, err := strconv.Atoi(s) return nil == err } // Print HTML header to the given http response func templateHeader(w http.ResponseWriter, r *http.Request, title string) { path := r.URL.Path[1:] split := strings.Split(path, "/") // Mark if the URL is for a whois query var isWhois bool = split[0] == "whois" var whoisTarget string = strings.Join(split[1:], "/") // Use a default URL if the request URL is too short // The URL is for return to IPv4 summary page if len(split) < 3 { path = "ipv4/summary/" + strings.Join(setting.servers, "+") + "/" } else if len(split) == 3 { path += "/" } split = strings.Split(path, "/") // Compose URLs for link in navbar ipv4URL := "/" + strings.Join([]string{"ipv4", split[1], split[2], strings.Join(split[3:], "/")}, "/") ipv6URL := "/" + strings.Join([]string{"ipv6", split[1], split[2], strings.Join(split[3:], "/")}, "/") allURL := "/" + strings.Join([]string{split[0], split[1], strings.Join(setting.servers, "+"), strings.Join(split[3:], "/")}, "/") // Check if the "All Server" link should be marked as active var serverAllActive bool = strings.ToLower(split[2]) == strings.ToLower(strings.Join(setting.servers, "+")) // Print the IPv4, IPv6, All Servers link in navbar var serverNavigation string = `
  • IPv4
  • IPv6
    • |
  • All Servers
    • ` // Add a link for each of the servers for _, server := range setting.servers { var serverActive string if split[2] == server { serverActive = " active" } serverURL := "/" + strings.Join([]string{split[0], split[1], server, strings.Join(split[3:], "/")}, "/") serverNavigation += `
  • ` + server + `
    • ` } // Add the options in navbar form, and check if they are active var optionKeys = []string{ "summary", "detail", "route", "route_all", "route_bgpmap", "route_where", "route_where_all", "route_where_bgpmap", "whois", "traceroute", } var optionDisplays = []string{ "show protocol", "show protocol all", "show route for ...", "show route for ... all", "show route for ... (bgpmap)", "show route where net ~ [ ... ]", "show route where net ~ [ ... ] all", "show route where net ~ [ ... ] (bgpmap)", "whois ...", "traceroute ...", } var options string for optionKeyID, optionKey := range optionKeys { options += "