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net_lookup.go
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/
net_lookup.go
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package main
import (
"fmt"
"net"
"os"
"strings"
"github.com/fatih/color"
)
const (
stagingEdgeKeySuffix = ".edgekey-staging.net"
productionEdgeKeySuffix = ".edgekey.net"
)
func validDomain(domain string) bool {
hostNames, err := net.LookupHost(domain)
if err != nil || len(hostNames) == 0 {
return false
}
return true
}
func netLookup(domain string) ([]net.IP, error) {
domainEdgeIPs, err := net.LookupIP(domain)
return domainEdgeIPs, err
}
func stagLookup(domain, domainCNAME string) ([]net.IP, error) {
if strings.Contains(domainCNAME, productionEdgeKeySuffix) {
domainStagingCNAME := strings.Replace(domainCNAME, productionEdgeKeySuffix, stagingEdgeKeySuffix, 1)
return netLookup(domainStagingCNAME)
} else {
domainEdgeIPs, err := netLookup(domain + stagingEdgeKeySuffix)
if err != nil {
parts := strings.Split(domain, ".")
rootDomain := strings.Join(parts[len(parts)-2:], ".")
domainEdgeIPs, err := net.LookupIP(rootDomain + stagingEdgeKeySuffix)
if err != nil {
return nil, err
}
return domainEdgeIPs, nil
}
return domainEdgeIPs, nil
}
}
func prodLookup(domain, domainCNAME string) ([]net.IP, error) {
if strings.Contains(domainCNAME, productionEdgeKeySuffix) {
return netLookup(domainCNAME)
} else {
domainEdgeIPs, err := netLookup(domain + productionEdgeKeySuffix)
if err != nil {
parts := strings.Split(domain, ".")
rootDomain := strings.Join(parts[len(parts)-2:], ".")
domainEdgeIPs, err := net.LookupIP(rootDomain + productionEdgeKeySuffix)
if err != nil {
return nil, err
}
return domainEdgeIPs, nil
}
return domainEdgeIPs, nil
}
}
func lookup(args args) []net.IP {
var edgeIPs []net.IP
domainCNAME, err := net.LookupCNAME(args.domain)
if err != nil {
fmt.Fprintf(color.Output, "%s %s %v\n", color.RedString("[Error]"), "Invalid domain provided! Malformed input domain or list provided. ", err)
os.Exit(1)
}
switch args.environment {
case "staging":
edgeIPs, _ = stagLookup(args.domain, domainCNAME)
case "production":
edgeIPs, _ = prodLookup(args.domain, domainCNAME)
default:
edgeIPs, _ = stagLookup(args.domain, domainCNAME)
}
return edgeIPs
}