84 lines
3.1 KiB
Text
84 lines
3.1 KiB
Text
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[
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// IP Subnet and Broadcast Calculator
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{
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"name": "IP Subnet and Broadcast",
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"description": r"""
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Calculates the network (subnet) address and broadcast address for an IPv4 address with CIDR notation.
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**Input format:** `ip_address/prefix` where:
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- `ip_address`: IPv4 address in dotted decimal notation (e.g., `192.168.1.100`)
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- `prefix`: CIDR prefix length (1-30) or subnet mask in dotted notation (e.g., `24` or `255.255.255.0`)
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**Output:**
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- `subnet`: Network address in dotted decimal notation
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- `broadcast`: Broadcast address in dotted decimal notation
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**Examples:**
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- Input: `192.168.1.100/24` → Subnet: `192.168.1.0`, Broadcast: `192.168.1.255`
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- Input: `10.0.0.50/8` → Subnet: `10.0.0.0`, Broadcast: `10.255.255.255`
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- Input: `172.16.5.100/16` → Subnet: `172.16.0.0`, Broadcast: `172.16.255.255`""",
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"input": [
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{"name": "ipWithMask", "unit": "scalar"}
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],
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"output": {"name": "subnet", "unit": "scalar"},
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"d4rtCode": """
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var input = ipWithMask.toString();
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var slashIndex = input.indexOf('/');
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if (slashIndex == -1) {
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subnet = 'error: no / found';
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broadcast = '';
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} else {
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var ipPart = input.substring(0, slashIndex).trim();
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var maskPart = input.substring(slashIndex + 1).trim();
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// Parse IP address
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var ipParts = ipPart.split('.');
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if (ipParts.length != 4) {
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subnet = 'error: invalid IP';
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broadcast = '';
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} else {
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var octet1 = int.parse(ipParts[0]);
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var octet2 = int.parse(ipParts[1]);
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var octet3 = int.parse(ipParts[2]);
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var octet4 = int.parse(ipParts[3]);
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// Convert IP to 32-bit integer
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var ipInt = (octet1 << 24) | (octet2 << 16) | (octet3 << 8) | octet4;
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// Parse mask (CIDR prefix or dotted notation)
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int maskInt;
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if (maskPart.contains('.')) {
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var maskParts = maskPart.split('.');
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var m1 = int.parse(maskParts[0]);
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var m2 = int.parse(maskParts[1]);
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var m3 = int.parse(maskParts[2]);
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var m4 = int.parse(maskParts[3]);
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maskInt = (m1 << 24) | (m2 << 16) | (m3 << 8) | m4;
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} else {
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var prefix = int.parse(maskPart);
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maskInt = prefix == 0 ? 0 : (-1 << (32 - prefix));
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}
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// Calculate subnet and broadcast
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var subnetInt = ipInt & maskInt;
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var broadcastInt = subnetInt | (~maskInt & 0xFFFFFFFF);
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// Convert back to dotted notation
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var s1 = (subnetInt >> 24) & 0xFF;
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var s2 = (subnetInt >> 16) & 0xFF;
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var s3 = (subnetInt >> 8) & 0xFF;
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var s4 = subnetInt & 0xFF;
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subnet = '\$s1.\$s2.\$s3.\$s4';
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var b1 = (broadcastInt >> 24) & 0xFF;
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var b2 = (broadcastInt >> 16) & 0xFF;
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var b3 = (broadcastInt >> 8) & 0xFF;
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var b4 = broadcastInt & 0xFF;
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broadcast = '\$b1.\$b2.\$b3.\$b4';
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}
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}
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""",
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"tags": ["networking", "ip", "subnet", "broadcast", "cidr"]
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}
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]
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