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06e6efe294
As part of a goal to eliminate Perl from libvirt build tools, rewrite the check-file-access.pl tool in Python. This was a straight conversion, manually going line-by-line to change the syntax from Perl to Python. Thus the overall structure of the file and approach is the same. Reviewed-by: Cole Robinson <crobinso@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
126 lines
3.7 KiB
Python
Executable File
126 lines
3.7 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# Copyright (C) 2016-2019 Red Hat, Inc.
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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# This script is supposed to check test_file_access.txt file and
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# warn about file accesses outside our working tree.
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#
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#
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import re
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import sys
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if len(sys.argv) != 3:
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print("syntax: %s ACCESS-FILE ACCESS-WHITELIST")
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sys.exit(1)
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access_file = sys.argv[1]
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whitelist_file = sys.argv[2]
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known_actions = ["open", "fopen", "access", "stat", "lstat", "connect"]
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files = []
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whitelist = []
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with open(access_file, "r") as fh:
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for line in fh:
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line = line.rstrip("\n")
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m = re.search(r'''^(\S*):\s*(\S*):\s*(\S*)(\s*:\s*(.*))?$''', line)
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if m is not None:
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rec = {
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"path": m.group(1),
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"action": m.group(2),
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"progname": m.group(3),
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"testname": m.group(5),
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}
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files.append(rec)
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else:
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raise Exception("Malformed line %s" % line)
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with open(whitelist_file, "r") as fh:
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for line in fh:
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line = line.rstrip("\n")
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if re.search(r'''^\s*#.*$''', line):
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continue # comment
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if line == "":
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continue
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m = re.search(r'''^(\S*):\s*(\S*)(:\s*(\S*)(\s*:\s*(.*))?)?$''', line)
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if m is not None and m.group(2) in known_actions:
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# $path: $action: $progname: $testname
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rec = {
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"path": m.group(1),
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"action": m.group(3),
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"progname": m.group(4),
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"testname": m.group(6),
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}
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whitelist.append(rec)
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else:
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m = re.search(r'''^(\S*)(:\s*(\S*)(\s*:\s*(.*))?)?$''', line)
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if m is not None:
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# $path: $progname: $testname
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rec = {
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"path": m.group(1),
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"action": None,
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"progname": m.group(3),
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"testname": m.group(5),
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}
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whitelist.append(rec)
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else:
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raise Exception("Malformed line %s" % line)
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# Now we should check if %traces is included in $whitelist. For
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# now checking just keys is sufficient
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err = False
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for file in files:
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match = False
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for rule in whitelist:
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if not re.match("^" + rule["path"] + "$", file["path"]):
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continue
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if (rule["action"] is not None and
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not re.match("^" + rule["action"] + "$", file["action"])):
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continue
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if (rule["progname"] is not None and
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not re.match("^" + rule["progname"] + "$", file["progname"])):
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continue
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if (rule["testname"] is not None and
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file["testname"] is not None and
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not re.match("^" + rule["testname"] + "$", file["testname"])):
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continue
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match = True
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if not match:
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err = True
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print("%s: %s: %s" %
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(file["path"], file["action"], file["progname"]),
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end="")
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if file["testname"] is not None:
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print(": %s" % file["testname"], end="")
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print("")
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if err:
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sys.exit(1)
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sys.exit(0)
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