150 lines
3.4 KiB
Go
150 lines
3.4 KiB
Go
package pxndscvm
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import (
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"net"
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"time"
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)
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// Socks5Str gets a SOCKS5 proxy that we have fully verified (dialed and then retrieved our IP address from a what-is-my-ip endpoint.
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// Will block if one is not available!
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func (s *Swamp) Socks5Str() string {
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for {
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select {
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case sock := <-s.Socks5:
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if !s.stillGood(sock) {
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continue
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}
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s.Stats.dispense()
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return sock.Endpoint
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}
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}
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}
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// Socks4Str gets a SOCKS4 proxy that we have fully verified.
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// Will block if one is not available!
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func (s *Swamp) Socks4Str() string {
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for {
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select {
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case sock := <-s.Socks4:
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if !s.stillGood(sock) {
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continue
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}
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s.Stats.dispense()
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return sock.Endpoint
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}
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}
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}
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// Socks4aStr gets a SOCKS4 proxy that we have fully verified.
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// Will block if one is not available!
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func (s *Swamp) Socks4aStr() string {
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for {
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select {
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case sock := <-s.Socks4a:
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if !s.stillGood(sock) {
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continue
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}
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s.Stats.dispense()
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return sock.Endpoint
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}
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}
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}
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// GetAnySOCKS retrieves any version SOCKS proxy as a Proxy type
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// Will block if one is not available!
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func (s *Swamp) GetAnySOCKS() Proxy {
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for {
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select {
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case sock := <-s.Socks4:
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if !s.stillGood(sock) {
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continue
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}
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s.Stats.dispense()
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return sock
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case sock := <-s.Socks4a:
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if !s.stillGood(sock) {
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continue
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}
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s.Stats.dispense()
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return sock
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case sock := <-s.Socks5:
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if !s.stillGood(sock) {
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continue
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}
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s.Stats.dispense()
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return sock
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default:
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time.Sleep(25 * time.Millisecond)
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}
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}
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}
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func (s *Swamp) stillGood(candidate Proxy) bool {
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if s.badProx.Peek(candidate) {
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s.dbgPrint(ylw + "badProx dial ratelimited: " + candidate.Endpoint + rst)
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return false
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}
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if _, err := net.DialTimeout("tcp", candidate.Endpoint, time.Duration(s.GetValidationTimeout())*time.Second); err != nil {
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s.dbgPrint(ylw + candidate.Endpoint + " failed dialing out during stillGood check: " + err.Error() + rst)
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return false
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}
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if time.Since(candidate.Verified) > s.swampopt.stale {
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s.dbgPrint("proxy stale: " + candidate.Endpoint)
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go s.Stats.stale()
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return false
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}
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return true
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}
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// RandomUserAgent retrieves a random user agent from our list in string form
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func (s *Swamp) RandomUserAgent() string {
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s.mu.RLock()
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defer s.mu.RUnlock()
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return randStrChoice(s.swampopt.userAgents)
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}
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// GetRandomEndpoint returns a random whatismyip style endpoint from our Swamp's options
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func (s *Swamp) GetRandomEndpoint() string {
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s.mu.RLock()
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defer s.mu.RUnlock()
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return randStrChoice(s.swampopt.CheckEndpoints)
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}
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// GetStaleTime returns the duration of time after which a proxy will be considered "stale".
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func (s *Swamp) GetStaleTime() time.Duration {
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s.mu.RLock()
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defer s.mu.RUnlock()
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return s.swampopt.stale
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}
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// GetValidationTimeout returns the current value of validationTimeout (in seconds).
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func (s *Swamp) GetValidationTimeout() int {
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s.mu.RLock()
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defer s.mu.RUnlock()
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return s.swampopt.validationTimeout
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}
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// GetMaxWorkers returns maximum amount of workers that validate proxies concurrently. Note this is read-only during runtime.
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func (s *Swamp) GetMaxWorkers() int {
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s.mu.RLock()
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defer s.mu.RUnlock()
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return s.swampopt.maxWorkers
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}
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// IsRunning returns true if our background goroutines defined in daemons.go are currently operational
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func (s *Swamp) IsRunning() bool {
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if s.runningdaemons == 2 {
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return true
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}
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return false
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}
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// TODO: Implement ways to access worker pool (pond) statistics
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