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url_hostname_resolver.go
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/
url_hostname_resolver.go
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package agents
import (
"fmt"
"net"
"github.com/shelld3v/aquatone/core"
)
type URLHostnameResolver struct {
session *core.Session
}
func NewURLHostnameResolver() *URLHostnameResolver {
return &URLHostnameResolver{}
}
func (a *URLHostnameResolver) ID() string {
return "agent:url_hostname_resolver"
}
func (a *URLHostnameResolver) Register(s *core.Session) error {
s.EventBus.SubscribeAsync(core.URLResponsive, a.OnURLResponsive, false)
a.session = s
return nil
}
func (a *URLHostnameResolver) OnURLResponsive(url string) {
a.session.Out.Debug("[%s] Received new responsive URL %s\n", a.ID(), url)
page := a.session.GetPage(url)
if page == nil {
a.session.Out.Error("Unable to find page for URL: %s\n", url)
return
}
if page.IsIPHost() {
a.session.Out.Debug("[%s] Skipping hostname resolving on IP host: %s\n", a.ID(), url)
page.Addrs = []string{page.ParsedURL().Hostname()}
return
}
a.session.WaitGroup.Add()
go func(page *core.Page) {
defer a.session.WaitGroup.Done()
addrs, err := net.LookupHost(fmt.Sprintf("%s.", page.ParsedURL().Hostname()))
if err != nil {
a.session.Out.Debug("[%s] Failed to resolve hostname for %s: %v\n", a.ID(), page.URL, err)
return
}
page.Addrs = addrs
}(page)
}