.

pkg/antiemul/antiemul.go

@@ -0,0 +1,82 @@
+package antiemul
+
+import (
+	"os"
+	"runtime"
+	"strconv"
+	"strings"
+	"time"
+)
+
+var platformCheck func() bool
+
+func Check() bool {
+	if checkTiming() {
+		return true
+	}
+	if checkMemory() {
+		return true
+	}
+	if checkUptime() {
+		return true
+	}
+	if checkCoreCount() {
+		return true
+	}
+	if platformCheck != nil && platformCheck() {
+		return true
+	}
+	return false
+}
+
+func checkTiming() bool {
+	start := time.Now()
+	for i := 0; i < 1000000; i++ {
+		_ = i * i
+	}
+	return time.Since(start) > 500*time.Millisecond
+}
+
+func checkMemory() bool {
+	data, err := os.ReadFile("/proc/meminfo")
+	if err != nil {
+		return false
+	}
+	content := string(data)
+	idx := strings.Index(content, "MemTotal:")
+	if idx == -1 {
+		return false
+	}
+	rest := content[idx+9:]
+	rest = strings.TrimSpace(rest)
+	fields := strings.Fields(rest)
+	if len(fields) == 0 {
+		return false
+	}
+	kb, err := strconv.ParseInt(fields[0], 10, 64)
+	if err != nil {
+		return false
+	}
+	return kb < 2000000
+}
+
+func checkUptime() bool {
+	data, err := os.ReadFile("/proc/uptime")
+	if err != nil {
+		return false
+	}
+	content := strings.TrimSpace(string(data))
+	fields := strings.Fields(content)
+	if len(fields) == 0 {
+		return false
+	}
+	seconds, err := strconv.ParseFloat(fields[0], 64)
+	if err != nil {
+		return false
+	}
+	return seconds < 60.0
+}
+
+func checkCoreCount() bool {
+	return runtime.NumCPU() < 2
+}