Current File : //backups/router/usr/local/opnsense/scripts/ipsec/list_sad.py
#!/usr/local/bin/python3
"""
Copyright (c) 2022 Ad Schellevis <ad@opnsense.org>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
"""
import hashlib
import subprocess
import ujson
if __name__ == '__main__':
result = {'records': []}
payload = subprocess.run(['/sbin/setkey', '-D'], capture_output=True, text=True).stdout.strip()
# split setkey data in sections so we can support line wraps more easily
sections = {}
this_section = None
for line in payload.split("\n"):
if not line.startswith("\t") and not line.startswith(" "):
this_section = "%08d" % (int(this_section) + 1 if this_section else 1)
sections[this_section] = [line]
elif this_section and line.startswith("\t"):
sections[this_section].append(line)
elif this_section and len(sections[this_section]) > 0:
seq = len(sections[this_section]) - 1
sections[this_section][seq] = "%s%s" % (sections[this_section][seq], line)
for section in sections:
sad_entry = {"src": "", "dst": "", "satype": "", "spi": ""}
for seqid, line in enumerate(sections[section]):
parts = line.split()
if seqid == 0:
# add tunnel src / dst
keyparts = line.split()
sad_entry["src"] = keyparts[0]
sad_entry["dst"] = keyparts[1]
if len(keyparts) > 2 and keyparts[2].find("["):
sad_entry["nat"] = keyparts[2][1:-1]
elif seqid == 1:
# satype and mode
for pid, part in enumerate(parts):
if pid == 0:
sad_entry["satype"] = part
elif part.startswith("spi"):
sad_entry[part.split('=')[0]] = part.split('(')[-1].split(')')[0][2:]
elif part.find('=') > -1:
sad_entry[part.split('=')[0]] = part.split('=')[1].split("(")[0]
elif line.startswith("\tE:"):
sad_entry["alg_enc"] = parts[1]
sad_entry["m_enc"] = parts[2:]
elif line.startswith("\tA:"):
sad_entry["alg_auth"] = parts[1]
sad_entry["m_auth"] = parts[2:]
elif line.count("\t") > 1 and line.count(":") > 0:
for item in line.split("\t"):
if item.find(":") > 0:
if line.startswith("\tcreated") or line.startswith("\tdiff"):
keyname = "addtime_%s" % item.split(":")[0]
elif line.startswith("\tlast"):
keyname = "usetime_%s" % item.split(":")[0]
elif line.startswith("\tcurrent"):
keyname = "bytes_%s" % item.split(":")[0]
elif line.startswith("\tallocated") and item.find('allocated') == -1:
keyname = "allocated_%s" % item.split(":")[0]
else:
keyname = item.split(":")[0]
sad_entry[keyname] = item[item.find(":")+1:].split("(")[0].strip()
elif line.find("=") > 0:
for part in parts:
if part.find("=") > 0:
sad_entry[part.split("=")[0]] = part.split("=")[1].strip()
# unique id
sad_entry['id'] = hashlib.md5(
("%(src)s-%(dst)s-%(satype)s-%(spi)s" % sad_entry).encode()
).hexdigest()
# format output
for key in sad_entry:
if sad_entry[key] == "":
sad_entry[key] = None
elif type(sad_entry[key]) is str and sad_entry[key].isdigit() and key not in ['spi']:
sad_entry[key] = int(sad_entry[key])
result['records'].append(sad_entry)
print(ujson.dumps(result))
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