From 03f68a51af9c9cf7bbdffbc2ab7a29ee29dd8464 Mon Sep 17 00:00:00 2001 From: bcoles Date: Sun, 26 Apr 2020 20:54:22 +1000 Subject: [PATCH] Userland: Add arp utility (#1962) --- Userland/arp.cpp | 55 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 Userland/arp.cpp diff --git a/Userland/arp.cpp b/Userland/arp.cpp new file mode 100644 index 00000000000..700302f73e8 --- /dev/null +++ b/Userland/arp.cpp @@ -0,0 +1,55 @@ +/* + * Copyright (c) 2020, the SerenityOS developers. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include +#include + +int main() +{ + auto file = Core::File::construct("/proc/net/arp"); + if (!file->open(Core::IODevice::ReadOnly)) { + fprintf(stderr, "Error: %s\n", file->error_string()); + return 1; + } + + printf("Address HWaddress\n"); + auto file_contents = file->read_all(); + auto json = JsonValue::from_string(file_contents).as_array(); + json.for_each([](auto& value) { + auto if_object = value.as_object(); + + auto ip_address = if_object.get("ip_address").to_string(); + auto mac_address = if_object.get("mac_address").to_string(); + + printf("%-15s ", ip_address.characters()); + printf("%-17s ", mac_address.characters()); + printf("\n"); + }); + + return 0; +}