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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <AK/JsonArray.h>
28#include <AK/JsonObject.h>
29#include <AK/String.h>
30#include <AK/Types.h>
31#include <LibCore/File.h>
32#include <net/if.h>
33#include <netinet/in.h>
34#include <stdio.h>
35#include <sys/ioctl.h>
36#include <sys/socket.h>
37
38String si_bytes(unsigned bytes)
39{
40 if (bytes >= GB)
41 return String::format("%fGiB", (double)bytes / (double)GB);
42 if (bytes >= MB)
43 return String::format("%fMiB", (double)bytes / (double)MB);
44 if (bytes >= KB)
45 return String::format("%fKiB", (double)bytes / (double)KB);
46 return String::format("%dB", bytes);
47}
48
49int main(int argc, char** argv)
50{
51 if (argc == 3) {
52 String ifname = argv[1];
53 auto address = IPv4Address::from_string(argv[2]);
54
55 if (!address.has_value()) {
56 fprintf(stderr, "Invalid IPv4 address: '%s'\n", argv[2]);
57 return 1;
58 }
59
60 int fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
61 if (fd < 0) {
62 perror("socket");
63 return 1;
64 }
65
66 struct ifreq ifr;
67 memset(&ifr, 0, sizeof(ifr));
68
69 strncpy(ifr.ifr_name, ifname.characters(), IFNAMSIZ);
70 ifr.ifr_addr.sa_family = AF_INET;
71 ((sockaddr_in&)ifr.ifr_addr).sin_addr.s_addr = address.value().to_in_addr_t();
72
73 int rc = ioctl(fd, SIOCSIFADDR, &ifr);
74 if (rc < 0) {
75 perror("ioctl(SIOCSIFADDR)");
76 return 1;
77 }
78 return 0;
79 }
80
81 auto file = Core::File::construct("/proc/net/adapters");
82 if (!file->open(Core::IODevice::ReadOnly)) {
83 fprintf(stderr, "Error: %s\n", file->error_string());
84 return 1;
85 }
86
87 auto file_contents = file->read_all();
88 auto json = JsonValue::from_string(file_contents).as_array();
89 json.for_each([](auto& value) {
90 auto if_object = value.as_object();
91
92 auto name = if_object.get("name").to_string();
93 auto class_name = if_object.get("class_name").to_string();
94 auto mac_address = if_object.get("mac_address").to_string();
95 auto ipv4_address = if_object.get("ipv4_address").to_string();
96 auto packets_in = if_object.get("packets_in").to_u32();
97 auto bytes_in = if_object.get("bytes_in").to_u32();
98 auto packets_out = if_object.get("packets_out").to_u32();
99 auto bytes_out = if_object.get("bytes_out").to_u32();
100 auto mtu = if_object.get("mtu").to_u32();
101
102 printf("%s:\n", name.characters());
103 printf(" mac: %s\n", mac_address.characters());
104 printf(" ipv4: %s\n", ipv4_address.characters());
105 printf(" class: %s\n", class_name.characters());
106 printf(" RX: %u packets %u bytes (%s)\n", packets_in, bytes_in, si_bytes(bytes_in).characters());
107 printf(" TX: %u packets %u bytes (%s)\n", packets_out, bytes_out, si_bytes(bytes_out).characters());
108 printf(" MTU: %u\n", mtu);
109 printf("\n");
110 });
111
112 return 0;
113}