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#!/usr/bin/env python3
import argparse
import csv
import requests
import sys
import os
from datetime import datetime
# IEEE registry URLs
IEEE_REG_URLS = {
"OUI": "https://standards-oui.ieee.org/oui/oui.csv",
"MAM": "https://standards-oui.ieee.org/oui28/mam.csv",
"OUI36": "https://standards-oui.ieee.org/oui36/oui36.csv",
"IAB": "https://standards-oui.ieee.org/iab/iab.csv",
}
DEFAULT_FILENAME = "ieee-oui.txt"
def fetch_csv(url, verbose=False):
"""Download CSV content from a URL."""
headers = {"User-Agent": "Mozilla/5.0 (compatible; FetchOUI/1.0; +https://github.com/kimocoder/wifite2)"}
if verbose:
print(f"→ Fetching {url}")
response = requests.get(url, headers=headers, timeout=30)
if not response.ok:
raise RuntimeError(f"Failed to fetch {url}: {response.status_code} {response.reason}")
if len(response.content) == 0:
raise RuntimeError(f"Empty response from {url}")
if verbose:
print(f" Downloaded {len(response.content)} bytes")
return response.text
def parse_and_write_csv(csv_content, outfile, key, verbose=False):
"""Parse CSV content and write MAC/Vendor to file."""
reader = csv.DictReader(csv_content.splitlines())
outfile.write(f"\n#\n# Start of IEEE {key} registry data\n#\n")
count = 0
for row in reader:
# Columns differ slightly between registries, so we handle gracefully
mac = row.get("Assignment") or row.get("Registry") or ""
vendor = row.get("Organization Name") or row.get("Organization") or ""
vendor = vendor.strip()
if mac and vendor:
outfile.write(f"{mac}\t{vendor}\n")
count += 1
outfile.write(f"#\n# End of IEEE {key} registry data. {count} entries.\n#\n")
if verbose:
print(f" Wrote {count} entries for {key}")
return count
def main():
parser = argparse.ArgumentParser(
description="Fetch the IEEE OUI (manufacturer) registries and write MAC/vendor mappings to a text file."
)
parser.add_argument("-f", metavar="FILE", default=DEFAULT_FILENAME,
help=f"Output filename (default: {DEFAULT_FILENAME})")
parser.add_argument("-v", action="store_true", help="Verbose output")
args = parser.parse_args()
filename = args.f
verbose = args.v
# Delete old file if exists
if os.path.exists(filename):
if verbose:
print(f"Deleting existing {filename}")
os.remove(filename)
# Open new output file
if verbose:
print(f"Opening {filename} for output")
with open(filename, "w", encoding="utf-8") as outfile:
date_str = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
outfile.write(f"# IEEE OUI Vendor List\n# Generated {date_str}\n")
total_entries = 0
for key, url in sorted(IEEE_REG_URLS.items()):
if verbose:
print(f"\nProcessing IEEE {key} registry data from {url}")
try:
content = fetch_csv(url, verbose)
total_entries += parse_and_write_csv(content, outfile, key, verbose)
except Exception as e:
print(f"Error processing {key}: {e}", file=sys.stderr)
print(f"\nTotal of {total_entries} MAC/Vendor mappings written to {filename}")
if __name__ == "__main__":
main()
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