initial version of the basic x11 proxy

main.go

@@ -0,0 +1,72 @@
+package main
+
+import (
+    "flag"
+    "fmt"
+    "log"
+    "os"
+    "strings"
+)
+
+func main() {
+    display := os.Getenv("DISPLAY")
+    proxySocket := "/tmp/.X11-unix/X5"
+
+    overrideDisplay := flag.String("display", "", "Override DISPLAY")
+    overrideSocket := flag.String("proxy-socket", proxySocket, "Proxy socket path")
+    flag.Parse()
+
+    if *overrideDisplay != "" {
+        display = *overrideDisplay
+    }
+
+    connType, target := resolveDisplay(display)
+    fmt.Printf("Proxying to %s (%s)\n", target, connTypeString(connType))
+
+    err := StartProxy(*overrideSocket, target, connType, display)
+    if err != nil {
+        log.Fatalf("Proxy error: %v", err)
+    }
+}
+
+func connTypeString(t ConnType) string {
+    if t == Unix {
+        return "Unix socket"
+    }
+    return "TCP"
+}
+
+func hexDump(buf []byte) string {
+    var out strings.Builder
+    for i := 0; i < len(buf); i += 16 {
+        line := fmt.Sprintf("%08x  ", i)
+
+        // Hex section
+        for j := 0; j < 16; j++ {
+            if i+j < len(buf) {
+                line += fmt.Sprintf("%02x ", buf[i+j])
+            } else {
+                line += "   "
+            }
+            if j == 7 {
+                line += " " // extra space in middle
+            }
+        }
+
+        line += " |"
+
+        // ASCII section
+        for j := 0; j < 16 && i+j < len(buf); j++ {
+            b := buf[i+j]
+            if b >= 32 && b <= 126 {
+                line += string(b)
+            } else {
+                line += "."
+            }
+        }
+
+        line += "|\n"
+        out.WriteString(line)
+    }
+    return out.String()
+}