133 lines
2.9 KiB
Go
133 lines
2.9 KiB
Go
package Prox5
|
|
|
|
import (
|
|
"errors"
|
|
"sync/atomic"
|
|
"time"
|
|
)
|
|
|
|
// Socks5Str gets a SOCKS5 proxy that we have fully verified (dialed and then retrieved our IP address from a what-is-my-ip endpoint.
|
|
// Will block if one is not available!
|
|
func (s *Swamp) Socks5Str() string {
|
|
for {
|
|
select {
|
|
case sock := <-s.ValidSocks5:
|
|
if !s.stillGood(sock) {
|
|
continue
|
|
}
|
|
s.Stats.dispense()
|
|
return sock.Endpoint
|
|
}
|
|
}
|
|
}
|
|
|
|
// Socks4Str gets a SOCKS4 proxy that we have fully verified.
|
|
// Will block if one is not available!
|
|
func (s *Swamp) Socks4Str() string {
|
|
for {
|
|
select {
|
|
case sock := <-s.ValidSocks4:
|
|
if !s.stillGood(sock) {
|
|
continue
|
|
}
|
|
s.Stats.dispense()
|
|
return sock.Endpoint
|
|
}
|
|
}
|
|
}
|
|
|
|
// Socks4aStr gets a SOCKS4 proxy that we have fully verified.
|
|
// Will block if one is not available!
|
|
func (s *Swamp) Socks4aStr() string {
|
|
for {
|
|
select {
|
|
case sock := <-s.ValidSocks4a:
|
|
if !s.stillGood(sock) {
|
|
continue
|
|
}
|
|
s.Stats.dispense()
|
|
return sock.Endpoint
|
|
}
|
|
}
|
|
}
|
|
|
|
func (sock *Proxy) copy() (Proxy, error) {
|
|
if !atomic.CompareAndSwapUint32(&sock.lock, stateUnlocked, stateLocked) {
|
|
return Proxy{Endpoint: ""}, errors.New("locked")
|
|
}
|
|
atomic.StoreUint32(&sock.lock, stateUnlocked)
|
|
|
|
return Proxy{
|
|
Endpoint: sock.Endpoint,
|
|
ProxiedIP: sock.ProxiedIP,
|
|
Proto: sock.Proto,
|
|
}, nil
|
|
}
|
|
|
|
// GetAnySOCKS retrieves any version SOCKS proxy as a Proxy type
|
|
// Will block if one is not available!
|
|
func (s *Swamp) GetAnySOCKS() Proxy {
|
|
dishout := func(sock *Proxy) (Proxy, bool) {
|
|
if !s.stillGood(sock) {
|
|
return Proxy{}, false
|
|
}
|
|
if sox, err := sock.copy(); err == nil {
|
|
s.Stats.dispense()
|
|
return sox, true
|
|
}
|
|
return Proxy{}, false
|
|
}
|
|
|
|
for {
|
|
var sox Proxy
|
|
var ok bool
|
|
select {
|
|
case sock := <-s.ValidSocks4:
|
|
if sox, ok = dishout(sock); ok {
|
|
return sox
|
|
}
|
|
continue
|
|
case sock := <-s.ValidSocks4a:
|
|
if sox, ok = dishout(sock); ok {
|
|
return sox
|
|
}
|
|
continue
|
|
case sock := <-s.ValidSocks5:
|
|
if sox, ok = dishout(sock); ok {
|
|
return sox
|
|
}
|
|
continue
|
|
default:
|
|
s.dbgPrint(red + "no valid proxies in channels, sleeping" + rst)
|
|
time.Sleep(10 * time.Second)
|
|
}
|
|
}
|
|
}
|
|
|
|
func (s *Swamp) stillGood(sock *Proxy) bool {
|
|
for !atomic.CompareAndSwapUint32(&sock.lock, stateUnlocked, stateLocked) {
|
|
time.Sleep(100 * time.Millisecond)
|
|
}
|
|
defer atomic.StoreUint32(&sock.lock, stateUnlocked)
|
|
|
|
if sock.timesBad.Load().(int) > s.GetRemoveAfter() {
|
|
s.dbgPrint(red + "deleting from map (too many failures): " + sock.Endpoint + rst)
|
|
if err := s.swampmap.delete(sock.Endpoint); err != nil {
|
|
s.dbgPrint(err.Error())
|
|
}
|
|
}
|
|
|
|
if s.badProx.Peek(sock) {
|
|
s.dbgPrint(ylw + "badProx dial ratelimited: " + sock.Endpoint + rst)
|
|
return false
|
|
}
|
|
|
|
if time.Since(sock.lastValidated.Load().(time.Time)) > s.swampopt.stale.Load().(time.Duration) {
|
|
s.dbgPrint("proxy stale: " + sock.Endpoint)
|
|
go s.Stats.stale()
|
|
return false
|
|
}
|
|
|
|
return true
|
|
}
|