Add the script to get list of the networks from network names

README.md

@@ -1,10 +1,12 @@
-# AS Network List
+# Get network lists from AS name or Network name
 
 ## Description
 
-This Python script retrieves and prints the network prefixes announced by a specified Autonomous System (AS). It leverages the RIPE Stat Data API to fetch the data.
+* If you know AS name, use the script `network_list_from_as.py` to get the list of networks.
+* If you know the network name, use the script `network_list_from_netname.py` to get the list of networks.
 
-**Note:** This script has been tested on MacOS and Linux.
+
+**Note:** This scripts has been tested on MacOS and Linux.
 
 ## Prerequisites
 
@@ -30,27 +32,52 @@ This Python script retrieves and prints the network prefixes announced by a spec
     ./requirements.sh
     ```
 
-## Usage
+## Usage of the `network_list_from_as.py` script
 
 1. Run the script with the AS number as an argument:
 
     ```bash
-    python as_network_list.py AS61280
+    python network_list_from_as.py AS61280
     ```
 
 2. To disable all output except the prefixes, use the `--quiet` or `-q` switch:
 
     ```bash
-    python as_network_list.py AS61280 --quiet
+    python network_list_from_as.py AS61280 -q
     ```
 
 3. To print a help message, use the `-h` or `--help` switch:
 
     ```bash
-    python as_network_list.py --help
+    python network_list_from_as.py --help
     ```
 
-## Screenshot
+## Usage of the `network_list_from_netname.py` script
+
+1. Run the script with the list of network names in a file as an argument:
+
+    ```bash
+    python network_list_from_netname.py files/blacklist4.txt
+    ```
+
+2. Run the script with the list of network names in the github repository as an argument:
+
+    ```bash
+    python network_list_from_netname.py https://github.com/AntiZapret/antizapret/blob/master/blacklist4.txt
+    ```
+
+    or better use the raw file link:
+
+    ```bash
+    python network_list_from_netname.py https://raw.githubusercontent.com/AntiZapret/antizapret/master/blacklist4.txt
+    ```
+
+3. To print a help message, use the `-h` or `--help` switch:
+
+    ```bash
+    python network_list_from_netname.py --help
+    ```
+
+## Screenshots
 
 ![Screenshot](https://github.com/C24Be/AS_Network_List/assets/153936414/574b072c-9104-4e02-b2c0-3609433bdfc4)
-

network_list_from_netname.py

@@ -0,0 +1,77 @@
+#!/usr/bin/env python3
+
+import socket
+import argparse
+import requests
+import ipaddress
+import re
+
+whois_server = "whois.ripe.net"
+
+def whois_query(whois_server, query):
+    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    s.connect((whois_server, 43))
+
+    # Prepare the query
+    query = f"{query}\r\n"
+    s.send(query.encode())
+
+    # Collect the response
+    response = ''
+    while True:
+        data = s.recv(4096)
+        try:
+            response += data.decode('utf-8')
+        except:
+            response += data.decode('latin-1')
+        if not data:
+            break
+    s.close()
+
+    # Extract the inetnum line
+    for line in response.split('\n'):
+        if line.startswith('inetnum'):
+            return line.strip()
+
+    return None
+
+def convert_to_raw_github_url(url):
+    return url.replace("https://github.com/", "https://raw.githubusercontent.com/").replace("/blob", "")
+
+def convert_to_cidr(ip_range):
+    start_ip, end_ip = ip_range.split(' - ')
+    start_ip = ipaddress.IPv4Address(start_ip)
+    end_ip = ipaddress.IPv4Address(end_ip)
+    cidrs = ipaddress.summarize_address_range(start_ip, end_ip)
+    return [str(cidr) for cidr in cidrs]
+
+def extract_netname(filename_or_url):
+    if filename_or_url.startswith('http://') or filename_or_url.startswith('https://'):
+        if 'github.com' in filename_or_url:
+            filename_or_url = convert_to_raw_github_url(filename_or_url)
+        response = requests.get(filename_or_url)
+        lines = response.text.split('\n')
+    else:
+        with open(filename_or_url, 'r') as file:
+            lines = file.readlines()
+
+    for line in lines:
+        if re.match(r'.*netname:', line):
+            response = whois_query(whois_server, line.split(':')[1].strip())
+            if response is not None:
+                ip_range = response.split(':')[1].strip()
+                cidrs = convert_to_cidr(ip_range)
+                for cidr in cidrs:
+                    print(cidr)
+
+    return None
+
+def main():
+    parser = argparse.ArgumentParser(description='Extract netname from file.')
+    parser.add_argument('filename_or_url', help='The file to extract netname from.')
+    args = parser.parse_args()
+
+    extract_netname(args.filename_or_url)
+
+if __name__ == "__main__":
+    main()

requirements.txt

@@ -2,5 +2,6 @@ certifi==2024.2.2
 charset-normalizer==3.3.2
 cymruwhois==1.6
 idna==3.6
+netaddr==1.2.1
 requests==2.31.0
 urllib3==2.2.1