From 40ed90849e45c622b4706de446f570c497f2dac3 Mon Sep 17 00:00:00 2001
From: Chandan Prajwal <76419264+ChandanSouL@users.noreply.github.com>
Date: Sun, 1 Sep 2024 04:01:21 +0530
Subject: [PATCH 1/3] Subnet Calculator for Local-Area-Network(LAN)

---
 Subnet-Calculator/requirements.txt     |  1 +
 Subnet-Calculator/subnet_calculator.py | 38 ++++++++++++++++++++++++++
 2 files changed, 39 insertions(+)
 create mode 100644 Subnet-Calculator/requirements.txt
 create mode 100644 Subnet-Calculator/subnet_calculator.py

diff --git a/Subnet-Calculator/requirements.txt b/Subnet-Calculator/requirements.txt
new file mode 100644
index 0000000..0b574b5
--- /dev/null
+++ b/Subnet-Calculator/requirements.txt
@@ -0,0 +1 @@
+psutil
\ No newline at end of file
diff --git a/Subnet-Calculator/subnet_calculator.py b/Subnet-Calculator/subnet_calculator.py
new file mode 100644
index 0000000..d0935bd
--- /dev/null
+++ b/Subnet-Calculator/subnet_calculator.py
@@ -0,0 +1,38 @@
+import psutil
+import ipaddress
+
+def get_network_info():
+    network_info = {}
+    for interface, addrs in psutil.net_if_addrs().items():
+        for addr in addrs:
+            # 2 represents IPv4
+            if addr.family == 2:
+                # Collect information only for IPv4 addresses
+                network_info[interface] = (addr.address, addr.netmask, addr.broadcast)
+    return network_info
+
+def calculate_subnet_details(ip, netmask):
+    # Convert IP and netmask to ipaddress objects
+    network = ipaddress.ip_network(f"{ip}/{netmask}", strict=False)
+    subnet = network.network_address
+    broadcast = network.broadcast_address
+    first_usable_ip = subnet + 1
+    last_usable_ip = broadcast - 1
+    return subnet, broadcast, first_usable_ip, last_usable_ip
+
+def main():
+    network_info = get_network_info()
+
+    for interface, (ip, netmask, broadcast) in network_info.items():
+        subnet, broadcast, first_usable_ip, last_usable_ip = calculate_subnet_details(ip, netmask)
+        print(f"Interface: {interface}")
+        print(f"IP Address: {ip}")
+        print(f"Subnet: {subnet}")
+        print(f"Netmask: {netmask}")
+        print(f"Range of IP addresses: {subnet} - {broadcast}")
+        print(f"Usable Range of IPs: {first_usable_ip} - {last_usable_ip}")
+        print(f"Broadcast: {broadcast}")
+        print()
+
+if __name__ == "__main__":
+    main()

From eab6986833273a8846316049a1c0780fdc8275b6 Mon Sep 17 00:00:00 2001
From: Chandan Prajwal <76419264+ChandanSouL@users.noreply.github.com>
Date: Sun, 1 Sep 2024 04:38:00 +0530
Subject: [PATCH 2/3] Adding a readmefile

---
 Subnet-Calculator/README.md | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 Subnet-Calculator/README.md

diff --git a/Subnet-Calculator/README.md b/Subnet-Calculator/README.md
new file mode 100644
index 0000000..a33f63b
--- /dev/null
+++ b/Subnet-Calculator/README.md
@@ -0,0 +1,16 @@
+This repository consists of a list of python scripts to automate few tasks.
+
+You can contribute by adding more python scripts which can be used to automate things. Some of already done are listed below.
+Incase you have anything to be followed while executing the python script mention it as well
+
+
+# Python Script
+
+## Script  - Subnet Calculator
+
+Python code to Identify your IP addresses, Subnet, Broadcast channel of all you LAN interfaces.
+subnet_calculator.py
+
+
+<!-- Updated README links and corrected typos -->
+<!-- Updated README links and corrected typos -->
\ No newline at end of file

From 92dcd9bdbf3ad08dfc5e91f1614f5640f9751191 Mon Sep 17 00:00:00 2001
From: Chandan Prajwal <76419264+ChandanSouL@users.noreply.github.com>
Date: Sun, 1 Sep 2024 04:39:44 +0530
Subject: [PATCH 3/3] Adding readme file

---
 Subnet-Calculator/README.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Subnet-Calculator/README.md b/Subnet-Calculator/README.md
index a33f63b..2f81119 100644
--- a/Subnet-Calculator/README.md
+++ b/Subnet-Calculator/README.md
@@ -11,6 +11,11 @@ Incase you have anything to be followed while executing the python script mentio
 Python code to Identify your IP addresses, Subnet, Broadcast channel of all you LAN interfaces.
 subnet_calculator.py
 
+# How to Use
+pip install psutil / pip install requirements.txt
+
+python3 subnet_calculator.py
+
 
 <!-- Updated README links and corrected typos -->
 <!-- Updated README links and corrected typos -->
\ No newline at end of file