1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
import React, { useEffect, useState } from 'react';
import { Netmask } from 'netmask';
export default function Cidr() {
const [ip, setIp] = useState([10, 88, 135, 144]);
const [cidr, setCidr] = useState(28);
const [cols] = useState(["bg-purple-400", "bg-red-400", "bg-green-400", "bg-yellow-400", "bg-slate-300"]);
const [isCopied, setIsCopied] = useState(false);
const [isShared, setIsShared] = useState(false);
const bits = ip.map(octet => Array.from({ length: 8 }, (_, i) => (octet >> (7 - i)) & 1));
const parseOctet = (val: string, max: number) => {
const num = Number(val);
if (isNaN(num) || num < 0) return 0;
if (num > max) return max;
return num;
}
const setIpOctet = (i: number, val: number) => {
const newIp = [...ip];
newIp[i] = val;
setIp(newIp);
}
const handleWheel = (event: React.WheelEvent<HTMLInputElement>, i: number, max: number) => {
event.preventDefault();
const min = 0;
const target = event.currentTarget as HTMLInputElement;
let value = parseInt(target.value);
if (event.deltaY > 0 && value > min) {
value -= 1;
}
if (event.deltaY < 0 && value < max) {
value += 1;
}
if (i == 4) {
setCidr(value);
}
else {
setIpOctet(i, value);
}
}
const handleKeyDown = (event: React.KeyboardEvent<HTMLInputElement>, i: number, max: number) => {
const min = 0;
const target = event.currentTarget as HTMLInputElement;
let value = parseInt(target.value);
if (event.key === "ArrowDown" && value > min) {
value -= 1;
}
else if (event.key === "ArrowUp" && value < max) {
value += 1;
}
else if (event.key === '.') {
event.preventDefault();
const parent = (event.target as Node).parentNode;
const next = parent?.nextSibling?.firstChild;
if (next instanceof HTMLInputElement) {
next.select();
next.focus();
}
}
else if (event.key === "/") {
event.preventDefault();
const parent = (event.target as Node).parentNode;
const mask = parent?.nextSibling;
if (mask instanceof HTMLInputElement) {
mask.select();
mask.focus();
}
}
if (i == 4) {
setCidr(value);
}
else {
setIpOctet(i, value);
}
}
const updateCidrString = (val: string) => {
const parts = val.split("/");
const ip = parts[0].split(".").map(Number);
const cidr = Number(parts[1]);
if (ip.length != 4) {
return
}
ip.forEach(octet => {
if (Number.isNaN(octet) || octet < 0 || octet > 255) {
return
}
})
setIp(ip);
if (Number.isNaN(cidr) || cidr < 0 || cidr > 32) {
return
}
setCidr(cidr);
}
const handlePaste = (event: React.ClipboardEvent<HTMLInputElement>) => {
event.preventDefault();
if (event.clipboardData === null) return;
const text = event.clipboardData.getData('Text');
updateCidrString(text);
}
const handleCopy = async () => {
await navigator.clipboard.writeText(pretty);
setIsCopied(true);
setTimeout(() => setIsCopied(false), 2000);
};
const handleShare = async () => {
const frag = "#" + ip.join(".") + "/" + cidr;
window.location.hash = frag;
await navigator.clipboard.writeText(window.location.toString());
setIsShared(true);
setTimeout(() => setIsShared(false), 2000);
};
useEffect(() => {
const fragment = window.location.hash.slice(1);
if (fragment) {
updateCidrString(fragment);
}
}, []);
const pretty = ip.join('.') + '/' + cidr;
const netmask = new Netmask(pretty);
const details = {
"Netmask": netmask.mask,
"CIDR Base IP": netmask.base,
"Broadcast IP": netmask.broadcast || "None",
"Count": netmask.size.toLocaleString(),
"First Usable IP": netmask.first,
"Last Usable IP": netmask.last
}
return (
<div className="my-6 border-0 sm:border border-gray-300 rounded-lg">
<div className="flex flex-wrap justify-center gap-4 my-10">
{ip.map((octet, i) => (
<div key={`octet-${i}`}>
<input
key={`inp-${i}`}
type="text"
value={octet}
onChange={(e) => setIpOctet(i, parseOctet(e.target.value, 255))}
onWheel={(e) => handleWheel(e, i, 255)}
onKeyDown={(e) => handleKeyDown(e, i, 255)}
onPaste={handlePaste}
className={`w-20 h-20 text-3xl text-center rounded-md ${cols[i]}`}
maxLength={3}
aria-label={`Octet ${i + 1}`}
/>
<span className="text-5xl pl-4" key={`sep-${i}`}>{i == 3 ? "/" : "."}</span>
</div>
))}
<input
type="text"
key={`inp-cidr`}
value={cidr}
onChange={(e) => setCidr(parseOctet(e.target.value, 32))}
onWheel={(e) => handleWheel(e, 4, 32)}
onKeyDown={(e) => handleKeyDown(e, 4, 32)}
onPaste={handlePaste}
className={`w-20 h-20 text-3xl text-center rounded-md ${cols[4]}`}
maxLength={2}
aria-label={`Network bits`}
/>
</div>
<div className="flex flex-wrap justify-center gap-4 mt-10">
{bits.map((octet, i) => <span key={`octet-${i}`} className="px-1">
{octet.map((bit, j) => <span key={`octet-${i}-bit-${j}`} className={`font-mono border-y ${j == 0 && "border-l"} border-r border-gray-700 px-2 py-1 ${i * 8 + j < cidr ? cols[i] : cols[4]}`}>{bit}</span>)}
</span>)}
</div>
<div className="text-center text-xl mt-8 grid grid-cols-1 sm:grid-cols-3 gap-4">
{Object.entries(details).map(([label, val]) =>
<div className="sm:p-3 " key={`detail-${label}`}>
<div className="font-mono">{val}</div>
<div className="font-bold tracking-tight text-slate-500 sm:text-3xl text-2xl">{label}</div>
</div>)
}
</div>
<div className="flex justify-end p-5">
<div className="mx-2">
<button
onClick={handleCopy}
className="flex items-center gap-2 px-4 py-2 text-sm text-gray-100 bg-blue-600 rounded-md hover:bg-blue-700"
>
{isCopied ? "Copied!" : "Copy CIDR"}
</button>
</div>
<div className="mx-2">
<button
onClick={handleShare}
className="flex items-center gap-2 px-4 py-2 text-sm text-gray-100 bg-blue-600 rounded-md hover:bg-blue-700"
>
{isShared ? "Copied!" : "Copy Share Link"}
</button>
</div>
</div>
</div>
);
}
|
