feat: implement SSRF protection settings and update related references

common/ip.go

@@ -0,0 +1,22 @@
+package common
+
+import "net"
+
+func IsPrivateIP(ip net.IP) bool {
+	if ip.IsLoopback() || ip.IsLinkLocalUnicast() || ip.IsLinkLocalMulticast() {
+		return true
+	}
+
+	private := []net.IPNet{
+		{IP: net.IPv4(10, 0, 0, 0), Mask: net.CIDRMask(8, 32)},
+		{IP: net.IPv4(172, 16, 0, 0), Mask: net.CIDRMask(12, 32)},
+		{IP: net.IPv4(192, 168, 0, 0), Mask: net.CIDRMask(16, 32)},
+	}
+
+	for _, privateNet := range private {
+		if privateNet.Contains(ip) {
+			return true
+		}
+	}
+	return false
+}