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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2022, Alex Major
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Assertions.h>
#include <AK/IPv4Address.h>
#include <AK/JsonArray.h>
#include <AK/JsonObject.h>
#include <AK/NumberFormat.h>
#include <AK/String.h>
#include <AK/Types.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/File.h>
#include <LibMain/Main.h>
#include <net/if.h>
#include <net/route.h>
#include <netinet/in.h>
#include <stdio.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
StringView value_ipv4 {};
StringView value_adapter {};
StringView value_mask {};
Core::ArgsParser args_parser;
args_parser.set_general_help("Display or modify the configuration of each network interface.");
args_parser.add_option(value_ipv4, "Set the IP address of the selected network", "ipv4", 'i', "ip");
args_parser.add_option(value_adapter, "Select a specific network adapter to configure", "adapter", 'a', "adapter");
args_parser.add_option(value_mask, "Set the network mask of the selected network", "mask", 'm', "mask");
args_parser.parse(arguments);
if (value_ipv4.is_empty() && value_adapter.is_empty() && value_mask.is_empty()) {
auto file = TRY(Core::File::open("/proc/net/adapters", Core::OpenMode::ReadOnly));
auto json = TRY(JsonValue::from_string(file->read_all()));
json.as_array().for_each([](auto& value) {
auto& if_object = value.as_object();
auto name = if_object.get("name"sv).to_string();
auto class_name = if_object.get("class_name"sv).to_string();
auto mac_address = if_object.get("mac_address"sv).to_string();
auto ipv4_address = if_object.get("ipv4_address"sv).to_string();
auto netmask = if_object.get("ipv4_netmask"sv).to_string();
auto packets_in = if_object.get("packets_in"sv).to_u32();
auto bytes_in = if_object.get("bytes_in"sv).to_u32();
auto packets_out = if_object.get("packets_out"sv).to_u32();
auto bytes_out = if_object.get("bytes_out"sv).to_u32();
auto mtu = if_object.get("mtu"sv).to_u32();
outln("{}:", name);
outln("\tmac: {}", mac_address);
outln("\tipv4: {}", ipv4_address);
outln("\tnetmask: {}", netmask);
outln("\tclass: {}", class_name);
outln("\tRX: {} packets {} bytes ({})", packets_in, bytes_in, human_readable_size(bytes_in));
outln("\tTX: {} packets {} bytes ({})", packets_out, bytes_out, human_readable_size(bytes_out));
outln("\tMTU: {}", mtu);
outln();
});
} else {
if (value_adapter.is_empty()) {
warnln("No network adapter was specified.");
return 1;
}
String ifname = value_adapter;
if (!value_ipv4.is_empty()) {
auto address = IPv4Address::from_string(value_ipv4);
if (!address.has_value()) {
warnln("Invalid IPv4 address: '{}'", value_ipv4);
return 1;
}
int fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
if (fd < 0) {
perror("socket");
return 1;
}
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
bool fits = ifname.copy_characters_to_buffer(ifr.ifr_name, IFNAMSIZ);
if (!fits) {
warnln("Interface name '{}' is too long", ifname);
return 1;
}
ifr.ifr_addr.sa_family = AF_INET;
((sockaddr_in&)ifr.ifr_addr).sin_addr.s_addr = address.value().to_in_addr_t();
int rc = ioctl(fd, SIOCSIFADDR, &ifr);
if (rc < 0) {
perror("ioctl(SIOCSIFADDR)");
return 1;
}
}
if (!value_mask.is_empty()) {
auto address = IPv4Address::from_string(value_mask);
if (!address.has_value()) {
warnln("Invalid IPv4 mask: '{}'", value_mask);
return 1;
}
int fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
if (fd < 0) {
perror("socket");
return 1;
}
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
bool fits = ifname.copy_characters_to_buffer(ifr.ifr_name, IFNAMSIZ);
if (!fits) {
warnln("Interface name '{}' is too long", ifname);
return 1;
}
ifr.ifr_netmask.sa_family = AF_INET;
((sockaddr_in&)ifr.ifr_netmask).sin_addr.s_addr = address.value().to_in_addr_t();
int rc = ioctl(fd, SIOCSIFNETMASK, &ifr);
if (rc < 0) {
perror("ioctl(SIOCSIFNETMASK)");
return 1;
}
}
}
return 0;
}
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