mirror of
https://github.com/1f349/violet.git
synced 2024-11-09 22:22:50 +00:00
107 lines
2.5 KiB
Go
107 lines
2.5 KiB
Go
package utils
|
|
|
|
import (
|
|
"golang.org/x/net/publicsuffix"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
// SplitDomainPort takes an input host and default port then outputs the domain,
|
|
// port and true or empty values and false if the split failed
|
|
func SplitDomainPort(host string, defaultPort int) (domain string, port int, ok bool) {
|
|
a := strings.SplitN(host, ":", 2)
|
|
switch len(a) {
|
|
case 2:
|
|
domain = a[0]
|
|
p, err := strconv.Atoi(a[1])
|
|
port = p
|
|
ok = err == nil
|
|
case 1:
|
|
domain = a[0]
|
|
port = defaultPort
|
|
ok = true
|
|
}
|
|
return
|
|
}
|
|
|
|
// GetDomainWithoutPort takes an input domain + port and outputs the domain
|
|
// without the port.
|
|
//
|
|
// example.com:443 => example.com
|
|
func GetDomainWithoutPort(domain string) string {
|
|
// if a valid index isn't found then return false
|
|
n := strings.LastIndexByte(domain, ':')
|
|
if n == -1 {
|
|
return domain
|
|
}
|
|
return domain[:n]
|
|
}
|
|
|
|
// ReplaceSubdomainWithWildcard returns the domain with the subdomain replaced
|
|
// with a wildcard '*' character.
|
|
//
|
|
// www.example.com => *.example.com
|
|
func ReplaceSubdomainWithWildcard(domain string) (string, bool) {
|
|
// if a valid index isn't found then return false
|
|
n := strings.IndexByte(domain, '.')
|
|
if n == -1 {
|
|
return "", false
|
|
}
|
|
return "*" + domain[n:], true
|
|
}
|
|
|
|
// GetParentDomain returns the parent domain stripping off the subdomain.
|
|
//
|
|
// www.example.com => example.com
|
|
func GetParentDomain(domain string) (string, bool) {
|
|
// if a valid index isn't found then return false
|
|
n := strings.IndexByte(domain, '.')
|
|
if n == -1 {
|
|
return "", false
|
|
}
|
|
return domain[n+1:], true
|
|
}
|
|
|
|
// GetTopFqdn returns the top domain stripping off multiple layers of subdomains.
|
|
//
|
|
// hello.world.example.com => example.com
|
|
func GetTopFqdn(domain string) (string, bool) {
|
|
out, err := publicsuffix.EffectiveTLDPlusOne(domain)
|
|
return out, err == nil
|
|
}
|
|
|
|
// SplitHostPath extracts the host/path from the input
|
|
func SplitHostPath(a string) (host, path string) {
|
|
// check if source has path
|
|
n := strings.IndexByte(a, '/')
|
|
if n == -1 {
|
|
// set host then path to /
|
|
host = a
|
|
path = "/"
|
|
} else {
|
|
// set host then custom path
|
|
host = a[:n]
|
|
path = a[n:] // this required to keep / at the start of the path
|
|
}
|
|
return
|
|
}
|
|
|
|
// SplitHostPathQuery extracts the host/path?query from the input
|
|
func SplitHostPathQuery(a string) (host, path, query string) {
|
|
host, path = SplitHostPath(a)
|
|
if path == "/" {
|
|
n := strings.IndexByte(host, '?')
|
|
if n != -1 {
|
|
query = host[n+1:]
|
|
host = host[:n]
|
|
}
|
|
return
|
|
}
|
|
n := strings.IndexByte(path, '?')
|
|
if n != -1 {
|
|
query = path[n+1:]
|
|
path = path[:n] // reassign happens after
|
|
}
|
|
return
|
|
}
|