mirror of
https://gitlab.com/apparmor/apparmor
synced 2025-08-23 02:27:12 +00:00
b4feb99841
This patch replaces the apparmor.vim generating script with a python version that eliminates the need for using the replace tool from the mysql-server package. It makes use of the automatically generated lists of capabilities and network protocols provided by the build infrastructure. I did not capture all the notes and TODOs that Christian had in the shell script; I can do so if desired. It also hooks the generation of the apparmor.vim file into the utils/ build and clean stages.
109 lines
3.5 KiB
Python
109 lines
3.5 KiB
Python
#!/usr/bin/python
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#
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# Copyright (C) 2012 Canonical Ltd.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of version 2 of the GNU General Public
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# License published by the Free Software Foundation.
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#
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# Written by Steve Beattie <steve@nxnw.org>, based on work by
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# Christian Boltz <apparmor@cboltz.de>
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import os
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import re
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import subprocess
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import sys
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# dangerous capabilities
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danger_caps=["audit_control",
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"audit_write",
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"mac_override",
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"mac_admin",
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"set_fcap",
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"sys_admin",
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"sys_module",
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"sys_rawio"]
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aa_network_types=r'\s+tcp|\s+udp|\s+icmp'
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aa_flags=r'(complain|audit|attach_disconnect|no_attach_disconnected|chroot_attach|chroot_no_attach|chroot_relative|namespace_relative)'
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def cmd(command, input = None, stderr = subprocess.STDOUT, stdout = subprocess.PIPE, stdin = None, timeout = None):
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'''Try to execute given command (array) and return its stdout, or
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return a textual error if it failed.'''
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try:
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sp = subprocess.Popen(command, stdin=stdin, stdout=stdout, stderr=stderr, close_fds=True)
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except OSError, e:
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return [127, str(e)]
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out, outerr = sp.communicate(input)
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# Handle redirection of stdout
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if out == None:
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out = ''
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# Handle redirection of stderr
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if outerr == None:
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outerr = ''
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return [sp.returncode,out+outerr]
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# get capabilities list
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(rc, output) = cmd(['make', '-s', '--no-print-directory', 'list_capabilities'])
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if rc != 0:
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print >>sys.stderr, ("make list_capabilities failed: " + output)
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exit(rc)
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capabilities = re.sub('CAP_', '', output.strip()).lower().split(" ")
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benign_caps =[]
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for cap in capabilities:
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if cap not in danger_caps:
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benign_caps.append(cap)
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# get network protos list
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(rc, output) = cmd(['make', '-s', '--no-print-directory', 'list_af_names'])
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if rc != 0:
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print >>sys.stderr, ("make list_af_names failed: " + output)
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exit(rc)
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af_names = []
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af_pairs = re.sub('AF_', '', output.strip()).lower().split(",")
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for af_pair in af_pairs:
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af_name = af_pair.lstrip().split(" ")[0]
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# skip max af name definition
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if len(af_name) > 0 and af_name != "max":
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af_names.append(af_name)
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# TODO: does a "debug" flag exist? Listed in apparmor.vim.in sdFlagKey,
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# but not in aa_flags...
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# -> currently (2011-01-11) not, but might come back
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aa_regex_map = {
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'FILE': r'\v^\s*(audit\s+)?(deny\s+)?(owner\s+)?(\/|\@\{\S*\})\S*\s+',
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'DENYFILE': r'\v^\s*(audit\s+)?deny\s+(owner\s+)?(\/|\@\{\S*\})\S*\s+',
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'auditdenyowner': r'(audit\s+)?(deny\s+)?(owner\s+)?',
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'auditdeny': r'(audit\s+)?(deny\s+)?',
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'FILENAME': r'(\/|\@\{\S*\})\S*',
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'EOL': r'\s*,(\s*$|(\s*#.*$)\@=)',
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'TRANSITION': r'(\s+-\>\s+\S+)?',
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'sdKapKey': " ".join(benign_caps),
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'sdKapKeyDanger': " ".join(danger_caps),
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'sdKapKeyRegex': "|".join(capabilities),
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'sdNetworkType': aa_network_types,
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'sdNetworkProto': "|".join(af_names),
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'flags': r'((flags\s*\=\s*)?\(\s*' + aa_flags + r'(\s*,\s*' + aa_flags + r')*\s*\)\s+)',
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}
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def my_repl(matchobj):
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#print matchobj.group(1)
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if matchobj.group(1) in aa_regex_map:
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return aa_regex_map[matchobj.group(1)]
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return matchobj.group(0)
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regex = "@@(" + "|".join(aa_regex_map) + ")@@"
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with file("apparmor.vim.in") as template:
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for line in template:
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line = re.sub(regex, my_repl, line.rstrip())
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print line
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