211 lines
4.8 KiB
Go
211 lines
4.8 KiB
Go
package prox5
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import (
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"fmt"
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"strings"
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"sync"
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"sync/atomic"
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"git.tcp.direct/kayos/prox5/internal/pools"
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)
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var (
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debugStatus *uint32
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debugHardLock = &sync.RWMutex{}
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)
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func init() {
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dd := debugDisabled
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debugStatus = &dd
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}
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const (
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debugEnabled uint32 = iota
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debugDisabled
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)
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type SocksLogger struct {
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parent *Swamp
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}
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// Printf is used to handle socks server logging.
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func (s SocksLogger) Printf(format string, a ...interface{}) {
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buf := pools.CopABuffer.Get().(*strings.Builder)
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buf.WriteString(fmt.Sprintf(format, a...))
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s.parent.dbgPrint(buf)
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}
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type basicPrinter struct{}
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func (b *basicPrinter) Print(str string) {
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if !useDebugChannel {
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println("[prox5] " + str)
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} else {
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debugChan <- str
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}
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}
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func (b *basicPrinter) Printf(format string, items ...any) {
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str := fmt.Sprintf("[prox5] "+format, items)
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if !useDebugChannel {
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println(str)
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} else {
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debugChan <- str
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}
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}
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// DebugEnabled returns the current state of our debug switch.
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func (p5 *Swamp) DebugEnabled() bool {
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debugHardLock.RLock()
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defer debugHardLock.RUnlock()
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return atomic.CompareAndSwapUint32(debugStatus, debugEnabled, debugEnabled)
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}
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// EnableDebug enables printing of verbose messages during operation
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func (p5 *Swamp) EnableDebug() {
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atomic.StoreUint32(debugStatus, debugEnabled)
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}
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// DisableDebug enables printing of verbose messages during operation.
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// WARNING: if you are using a DebugChannel, you must read all of the messages in the channel's cache or this will block.
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func (p5 *Swamp) DisableDebug() {
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atomic.StoreUint32(debugStatus, debugDisabled)
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}
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func simpleString(s string) *strings.Builder {
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buf := pools.CopABuffer.Get().(*strings.Builder)
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buf.WriteString(s)
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return buf
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}
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func (p5 *Swamp) dbgPrint(builder *strings.Builder) {
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defer pools.DiscardBuffer(builder)
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if !p5.DebugEnabled() {
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return
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}
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p5.DebugLogger.Print(builder.String())
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return
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}
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func (p5 *Swamp) msgUnableToReach(socksString, target string, err error) {
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if !p5.DebugEnabled() {
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return
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}
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buf := pools.CopABuffer.Get().(*strings.Builder)
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buf.WriteString("unable to reach ")
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if p5.swampopt.redact {
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buf.WriteString("[redacted]")
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} else {
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buf.WriteString(target)
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}
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buf.WriteString(" with ")
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buf.WriteString(socksString)
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if !p5.swampopt.redact {
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buf.WriteString(": ")
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buf.WriteString(err.Error())
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}
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buf.WriteString(", cycling...")
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p5.dbgPrint(buf)
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}
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func (p5 *Swamp) msgUsingProxy(socksString string) {
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if !p5.DebugEnabled() {
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return
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}
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buf := pools.CopABuffer.Get().(*strings.Builder)
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buf.WriteString("MysteryDialer using socks: ")
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buf.WriteString(socksString)
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p5.dbgPrint(buf)
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}
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func (p5 *Swamp) msgFailedMiddleware(socksString string) {
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if !p5.DebugEnabled() {
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return
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}
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buf := pools.CopABuffer.Get().(*strings.Builder)
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buf.WriteString("failed middleware check, ")
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buf.WriteString(socksString)
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buf.WriteString(", cycling...")
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p5.dbgPrint(buf)
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}
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func (p5 *Swamp) msgTry(socksString string) {
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if !p5.DebugEnabled() {
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return
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}
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buf := pools.CopABuffer.Get().(*strings.Builder)
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buf.WriteString("try dial with: ")
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buf.WriteString(socksString)
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p5.dbgPrint(buf)
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}
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func (p5 *Swamp) msgCantGetLock(socksString string, putback bool) {
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if !p5.DebugEnabled() {
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return
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}
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buf := pools.CopABuffer.Get().(*strings.Builder)
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buf.WriteString("can't get lock for ")
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buf.WriteString(socksString)
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if putback {
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buf.WriteString(", putting back in queue")
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}
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p5.dbgPrint(buf)
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}
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func (p5 *Swamp) msgGotLock(socksString string) {
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if !p5.DebugEnabled() {
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return
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}
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buf := pools.CopABuffer.Get().(*strings.Builder)
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buf.WriteString("got lock for ")
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buf.WriteString(socksString)
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p5.dbgPrint(buf)
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}
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func (p5 *Swamp) msgChecked(sock *Proxy, success bool) {
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if !p5.DebugEnabled() {
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return
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}
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buf := pools.CopABuffer.Get().(*strings.Builder)
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if !success {
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buf.WriteString("failed to verify: ")
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buf.WriteString(sock.Endpoint)
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p5.dbgPrint(buf)
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return
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}
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buf.WriteString("verified ")
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buf.WriteString(sock.Endpoint)
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buf.WriteString(" as ")
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buf.WriteString(sock.protocol.Get().String())
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buf.WriteString(" proxy")
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p5.dbgPrint(buf)
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}
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func (p5 *Swamp) msgBadProxRate(sock *Proxy) {
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if !p5.DebugEnabled() {
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return
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}
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buf := pools.CopABuffer.Get().(*strings.Builder)
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buf.WriteString("badProx ratelimited: ")
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buf.WriteString(sock.Endpoint)
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p5.dbgPrint(buf)
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}
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// ------------
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var (
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debugChan chan string
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useDebugChannel bool
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)
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// DebugChannel will return a channel which will receive debug messages once debug is enabled.
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// This will alter the flow of debug messages, they will no longer print to console, they will be pushed into this channel.
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// Make sure you pull from the channel eventually to avoid build up of blocked goroutines.
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//
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// Deprecated: use DebugLogger instead. This will be removed in a future version.
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func (p5 *Swamp) DebugChannel() chan string {
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debugChan = make(chan string, 100)
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useDebugChannel = true
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return debugChan
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}
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