feat(packet-sniffer): add CLI options for IP filtering and masking

src/cli/packet_sniffer_cli.cpp

@@ -0,0 +1,30 @@
+#include "packet_sniffer_cli.hpp"
+#include <boost/program_options/value_semantic.hpp>
+
+PacketSnifferCli::PacketSnifferCli()
+    : CliBase("Packet Sniffer Options")
+    , ip_("")
+{
+}
+
+void PacketSnifferCli::setupOptions()
+{
+    // clang-format off
+    desc_.add_options()
+        ("help,h",  "Show help")
+        ("ip,H",    withDefault(ip_, "<IP>"), "Local IPv4 to sniff (e.g. 192.168.1.42)")
+        ("mask,m",  boost::program_options::value<bool>()->default_value(false)->implicit_value(true),
+                    "Mask IP addresses in output (demo)");
+    // clang-format on
+}
+
+std::string PacketSnifferCli::getIp() const
+{
+    return vm_.at("ip").as<std::string>();
+}
+
+bool PacketSnifferCli::isMaskEnabled() const
+{
+    const auto it = vm_.find("mask");
+    return (it != vm_.end()) ? it->second.as<bool>() : false;
+}

src/cli/packet_sniffer_cli.hpp

@@ -0,0 +1,19 @@
+#pragma once
+#include "cli_base.hpp"
+#include "option_utils.hpp"
+#include <string>
+
+class PacketSnifferCli : public CliBase, protected OptionUtils
+{
+  public:
+    PacketSnifferCli();
+
+    std::string getIp() const;
+    bool isMaskEnabled() const;
+
+  protected:
+    void setupOptions() override;
+
+  private:
+    std::string ip_;
+};