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Userland: Add arp utility (#1962)

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bcoles 2020-04-26 20:54:22 +10:00 committed by GitHub
parent 0f3990cfa3
commit 03f68a51af
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Notes: sideshowbarker 2024-07-19 07:17:21 +09:00 
Author: https://github.com/bcoles
Commit: https://github.com/SerenityOS/serenity/commit/03f68a51af9
Pull-request: https://github.com/SerenityOS/serenity/pull/1962
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Userland/arp.cpp Normal file
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/*
* 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 <AK/JsonObject.h>
#include <AK/String.h>
#include <LibCore/File.h>
#include <stdio.h>
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;
}