diff options
Diffstat (limited to 'src/tools/analyzer')
| -rw-r--r-- | src/tools/analyzer/Makefile.am | 22 | ||||
| -rw-r--r-- | src/tools/analyzer/Makefile.in | 853 | ||||
| -rw-r--r-- | src/tools/analyzer/__init__.py | 0 | ||||
| -rw-r--r-- | src/tools/analyzer/modules/__init__.py | 0 | ||||
| -rw-r--r-- | src/tools/analyzer/modules/request.py | 320 | ||||
| -rw-r--r-- | src/tools/analyzer/parser.py | 60 | ||||
| -rw-r--r-- | src/tools/analyzer/source_files.py | 76 | ||||
| -rw-r--r-- | src/tools/analyzer/source_journald.py | 46 | ||||
| -rw-r--r-- | src/tools/analyzer/source_reader.py | 27 | ||||
| -rwxr-xr-x | src/tools/analyzer/sss_analyze | 5 | ||||
| -rw-r--r-- | src/tools/analyzer/sss_analyze.py | 104 |
11 files changed, 1513 insertions, 0 deletions
diff --git a/src/tools/analyzer/Makefile.am b/src/tools/analyzer/Makefile.am new file mode 100644 index 0000000..b40043d --- /dev/null +++ b/src/tools/analyzer/Makefile.am @@ -0,0 +1,22 @@ +sss_analyze_pythondir = $(libexecdir)/sssd + +dist_sss_analyze_python_SCRIPTS = \ + sss_analyze \ + $(NULL) + +pkgpythondir = $(python3dir)/sssd + +dist_pkgpython_DATA = \ + __init__.py \ + source_files.py \ + source_journald.py \ + source_reader.py \ + parser.py \ + sss_analyze.py \ + $(NULL) + +modulesdir = $(pkgpythondir)/modules +dist_modules_DATA = \ + modules/__init__.py \ + modules/request.py \ + $(NULL) diff --git a/src/tools/analyzer/Makefile.in b/src/tools/analyzer/Makefile.in new file mode 100644 index 0000000..0018403 --- /dev/null +++ b/src/tools/analyzer/Makefile.in @@ -0,0 +1,853 @@ +# Makefile.in generated by automake 1.16.5 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2021 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software 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tags-am uninstall uninstall-am uninstall-dist_modulesDATA \ + uninstall-dist_pkgpythonDATA \ + uninstall-dist_sss_analyze_pythonSCRIPTS + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/src/tools/analyzer/__init__.py b/src/tools/analyzer/__init__.py new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/src/tools/analyzer/__init__.py diff --git a/src/tools/analyzer/modules/__init__.py b/src/tools/analyzer/modules/__init__.py new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/src/tools/analyzer/modules/__init__.py diff --git a/src/tools/analyzer/modules/request.py b/src/tools/analyzer/modules/request.py new file mode 100644 index 0000000..d661ddd --- /dev/null +++ b/src/tools/analyzer/modules/request.py @@ -0,0 +1,320 @@ +import re +import logging + +from sssd.parser import SubparsersAction +from sssd.parser import Option + +logger = logging.getLogger() + + +class RequestAnalyzer: + """ + A request analyzer module, handles request tracking logic + and analysis. Parses input generated from a source Reader. + """ + module_parser = None + consumed_logs = [] + list_opts = [ + Option('--verbose', 'Verbose output', bool, '-v'), + Option('--pam', 'Filter only PAM requests', bool), + ] + + show_opts = [ + Option('cid', 'Track request with this ID', int), + Option('--child', 'Include child process logs', bool), + Option('--merge', 'Merge logs together sorted by timestamp', bool), + Option('--pam', 'Track only PAM requests', bool), + ] + + def print_module_help(self, args): + """ + Print the module parser help output + + Args: + args (Namespace): argparse parsed arguments + """ + self.module_parser.print_help() + + def setup_args(self, parser_grp, cli): + """ + Setup module parser, subcommands, and options + + Args: + parser_grp (argparse.Action): Parser group to nest + module and subcommands under + """ + desc = "Analyze request tracking module" + self.module_parser = parser_grp.add_parser('request', + description=desc, + help='Request tracking') + + subparser = self.module_parser.add_subparsers(title=None, + dest='subparser', + action=SubparsersAction, + metavar='COMMANDS') + + subcmd_grp = subparser.add_parser_group('Operation Modes') + cli.add_subcommand(subcmd_grp, 'list', 'List recent requests', + self.list_requests, self.list_opts) + cli.add_subcommand(subcmd_grp, 'show', 'Track individual request ID', + self.track_request, self.show_opts) + + self.module_parser.set_defaults(func=self.print_module_help) + + return self.module_parser + + def load(self, args): + """ + Load the appropriate source reader. + + Args: + args (Namespace): argparse parsed arguments + + Returns: + Instantiated source object + """ + if args.source == "journald": + from sssd.source_journald import Journald + source = Journald() + else: + from sssd.source_files import Files + source = Files(args.logdir) + return source + + def matched_line(self, source, patterns): + """ + Yield lines which match any number of patterns (OR) in + provided patterns list. + + Args: + source (Reader): source Reader object + Yields: + lines matching the provided pattern(s) + """ + for line in source: + for pattern in patterns: + re_obj = re.compile(pattern) + if re_obj.search(line): + if line.startswith(' * '): + continue + yield line + + def get_linked_ids(self, source, pattern, regex): + """ + Retrieve list of associated REQ_TRACE ids. Filter + only source lines by pattern, then parse out the + linked id with the provided regex. + + Args: + source (Reader): source Reader object + pattern (list of str): regex pattern(s) used for finding + linked ids + regex (str): regular expression used to extract linked id + + Returns: + List of linked ids discovered + """ + linked_ids = [] + for match in self.matched_line(source, pattern): + id_re = re.compile(regex) + match = id_re.search(match) + if match: + found = match.group(0) + linked_ids.append(found) + return linked_ids + + def consume_line(self, line, source, consume): + """ + Print or consume a line, if merge cli option is provided then consume + boolean is set to True + + Args: + line (str): line to process + source (Reader): source Reader object + consume (bool): If True, line is added to consume_logs + list, otherwise print line + + Returns: + True if line was processed, otherwise False + """ + found_results = True + if consume: + self.consumed_logs.append(line.rstrip(line[-1])) + else: + # files source includes newline + if type(source).__name__ == 'Files': + print(line, end='') + else: + print(line) + return found_results + + def print_formatted_verbose(self, source): + """ + Parse log file and print formatted verbose list_requests output + + Args: + source (Reader): source Reader object + """ + data = {} + # collect cid log lines from single run through of parsing the log + # into dictionary # (cid, ts) -> logline_output + for line in source: + if "CID#" not in line: + continue + + # parse CID and ts from line, key is a tuple of (cid,ts) + fields = line.split("[") + # timestamp to the minute, cut off seconds, ms + ts = fields[0][:17] + result = re.search('CID#[0-9]*', fields[3]) + cid = result.group(0) + + # if mapping exists, append line to output. Otherwise create new mapping + if (cid, ts) in data.keys(): + data[(cid, ts)] += line + else: + data[(cid, ts)] = line + + # pretty print the data + for k, v in data.items(): + cr_done = [] + id_done = [] + for cidline in v.splitlines(): + plugin = "" + name = "" + id = "" + + # CR number + fields = cidline.split("[") + cr_field = fields[3][7:] + cr = cr_field.split(":")[0][4:] + # Client connected, top-level info line + if re.search(r'\[cmd', cidline): + self.print_formatted(cidline) + # CR Plugin name + if re.search("cache_req_send", cidline): + plugin = cidline.split('\'')[1] + id_done.clear() + # Extract CR number + fields = cidline.split("[") + cr_field = fields[3][7:] + cr = cr_field.split(":")[0][4:] + # CR Input name + elif re.search("cache_req_process_input", cidline): + name = cidline.rsplit('[')[-1] + # CR Input id + elif re.search("cache_req_search_send", cidline): + id = cidline.rsplit()[-1] + + if plugin: + print(" - " + plugin) + if name: + # Avoid duplicate output with the same CR # + if cr not in cr_done: + print(" - " + name[:-1]) + cr_done.append(cr) + if (id and ("UID" in cidline or "GID" in cidline)): + if id not in id_done and bool(re.search(r'\d', id)): + print(" - " + id) + id_done.append(id) + + def print_formatted(self, line): + """ + Parse line and print formatted list_requests output + + Args: + line (str): line to parse + Returns: + Client ID from printed line, 0 otherwise + """ + # exclude backtrace logs + if line.startswith(' * '): + return 0 + if "refreshed" in line: + return 0 + ts = line.split(")")[0] + ts = ts[1:] + fields = line.split("[") + cid = fields[3][4:-9] + cmd = fields[4][4:-1] + uid = fields[5][4:-1] + if not uid.isnumeric(): + uid = fields[6][4:-1] + print(f'{ts}: [uid {uid}] CID #{cid}: {cmd}') + return cid + + def list_requests(self, args): + """ + List component (default: NSS) responder requests + + Args: + args (Namespace): populated argparse namespace + """ + source = self.load(args) + component = source.Component.NSS + resp = "nss" + # Log messages matching the following regex patterns contain + # the useful info we need to produce list output + patterns = [r'\[cmd'] + if args.pam: + component = source.Component.PAM + resp = "pam" + + logger.info(f"******** Listing {resp} client requests ********") + source.set_component(component, False) + + if args.verbose: + self.print_formatted_verbose(source) + else: + for line in self.matched_line(source, patterns): + if type(source).__name__ == 'Journald': + print(line) + else: + self.print_formatted(line) + + def track_request(self, args): + """ + Print Logs pertaining to individual SSSD client request + + Args: + args (Namespace): populated argparse namespace + """ + source = self.load(args) + cid = args.cid + resp_results = False + be_results = False + component = source.Component.NSS + resp = "nss" + pattern = [rf"\[CID#{cid}\]"] + + if args.pam: + component = source.Component.PAM + resp = "pam" + + logger.info(f"******** Checking {resp} responder for Client ID" + f" {cid} *******") + source.set_component(component, args.child) + for match in self.matched_line(source, pattern): + resp_results = self.consume_line(match, source, args.merge) + + logger.info(f"********* Checking Backend for Client ID {cid} ********") + pattern = [rf'REQ_TRACE.*\[sssd.{resp} CID #{cid}\]'] + source.set_component(source.Component.BE, args.child) + + be_id_regex = r'\[RID#[0-9]+\]' + be_ids = self.get_linked_ids(source, pattern, be_id_regex) + + pattern.clear() + [pattern.append(f'\\{id}') for id in be_ids] + + for match in self.matched_line(source, pattern): + be_results = self.consume_line(match, source, args.merge) + + if args.merge: + # sort by date/timestamp + sorted_list = sorted(self.consumed_logs, + key=lambda s: s.split(')')[0]) + for entry in sorted_list: + print(entry) + if not resp_results and not be_results: + logger.warn(f"ID {cid} not found in logs!") diff --git a/src/tools/analyzer/parser.py b/src/tools/analyzer/parser.py new file mode 100644 index 0000000..742694e --- /dev/null +++ b/src/tools/analyzer/parser.py @@ -0,0 +1,60 @@ +import argparse + + +# Based on patch from https://bugs.python.org/issue9341 +class SubparsersAction(argparse._SubParsersAction): + """ + Provide a subparser action that can create subparsers with ability of + grouping arguments. + + It is based on the patch from: + + - https://bugs.python.org/issue9341 + """ + + class _PseudoGroup(argparse.Action): + def __init__(self, container, title): + super().__init__(option_strings=[], dest=title) + self.container = container + self._choices_actions = [] + + def add_parser(self, name, **kwargs): + # add the parser to the main Action, but move the pseudo action + # in the group's own list + parser = self.container.add_parser(name, **kwargs) + choice_action = self.container._choices_actions.pop() + self._choices_actions.append(choice_action) + return parser + + def _get_subactions(self): + return self._choices_actions + + def add_parser_group(self, title): + # the formatter can handle recursive subgroups + grp = SubparsersAction._PseudoGroup(self, title) + self._choices_actions.append(grp) + return grp + + def add_parser_group(self, title): + """ + Add new parser group. + + :param title: Title. + :type title: str + :return: Parser group that can have additional parsers attached. + :rtype: ``argparse.Action`` extended with ``add_parser`` method + """ + grp = self._PseudoGroup(self, title) + self._choices_actions.append(grp) + return grp + + +class Option: + """ + Group option attributes for command/subcommand options + """ + def __init__(self, name, help_msg, opt_type, short_opt=None): + self.name = name + self.short_opt = short_opt + self.help_msg = help_msg + self.opt_type = opt_type diff --git a/src/tools/analyzer/source_files.py b/src/tools/analyzer/source_files.py new file mode 100644 index 0000000..0cadf99 --- /dev/null +++ b/src/tools/analyzer/source_files.py @@ -0,0 +1,76 @@ +import glob +import logging + +from sssd.source_reader import Reader + +logger = logging.getLogger() + + +class Files(Reader): + """ + A class used to represent a Log Files Reader + + Args: + path -- the path where SSSD logs are to + be read (default /var/log/sssd/) + """ + + def __init__(self, path): + super().__init__() + self.log_files = [] + self.path = self.resolve_path(path) + self.domains = self.get_domain_logfiles() + + def __iter__(self): + """ + Yields: + str: The next line in the log file + """ + for files in self.log_files: + try: + with open(files) as file: + for line in file: + yield line + except FileNotFoundError as err: + logger.warning("Could not find domain log file, skipping") + logger.warning(err) + continue + + def resolve_path(self, path): + if path.endswith("/"): + return path + else: + return path + "/" + + def get_domain_logfiles(self, child=False): + """ Retrieve list of SSSD log files, exclude rotated (.gz) files """ + domain_files = [] + exclude_list = ["ifp", "nss", "pam", "sudo", "autofs", + "ssh", "pac", "kcm", ".gz"] + if child: + file_list = glob.glob(self.path + "*.log") + else: + file_list = glob.glob(self.path + "sssd_*") + for file in file_list: + if not any(s in file for s in exclude_list): + domain_files.append(file) + + return domain_files + + def set_component(self, component, child): + """ + Switch the reader to interact with a certain SSSD component + NSS, PAM, BE + """ + self.log_files = [] + if component == self.Component.NSS: + self.log_files.append(self.path + "sssd_nss.log") + elif component == self.Component.PAM: + self.log_files.append(self.path + "sssd_pam.log") + elif component == self.Component.BE: + domains = self.get_domain_logfiles(child) + if not domains: + raise IOError + # error: No domains found? + for dom in domains: + self.log_files.append(dom) diff --git a/src/tools/analyzer/source_journald.py b/src/tools/analyzer/source_journald.py new file mode 100644 index 0000000..22ec2ed --- /dev/null +++ b/src/tools/analyzer/source_journald.py @@ -0,0 +1,46 @@ +from systemd import journal + +from sssd.source_reader import Reader + +_EXE_PREFIX = "/usr/libexec/sssd/" +_NSS_MATCH = _EXE_PREFIX + "sssd_nss" +_PAM_MATCH = _EXE_PREFIX + "sssd_pam" +_BE_MATCH = _EXE_PREFIX + "sssd_be" + + +class Journald(Reader): + """ + A class used to represent a Journald Reader + """ + def __init__(self): + super().__init__() + self.reader = journal.Reader() + self.reader.this_boot() + self.reader.seek_head() + + def __iter__(self): + """ + Yields: + str: The next journal entry message, with timestamp if found + """ + self.reader.seek_head() + for entry in self.reader: + ts = entry['__REALTIME_TIMESTAMP'] + msg = entry['MESSAGE'] + if ts: + yield f'{ts}: {msg}' + else: + yield msg + + def set_component(self, component, child): + """ + Switch the reader to interact with a certain SSSD component + NSS, PAM, BE + """ + self.reader.flush_matches() + if component == self.Component.NSS: + self.reader.add_match(_EXE=_NSS_MATCH) + elif component == self.Component.PAM: + self.reader.add_match(_EXE=_PAM_MATCH) + elif component == self.Component.BE: + self.reader.add_match(_EXE=_BE_MATCH) diff --git a/src/tools/analyzer/source_reader.py b/src/tools/analyzer/source_reader.py new file mode 100644 index 0000000..10d2d37 --- /dev/null +++ b/src/tools/analyzer/source_reader.py @@ -0,0 +1,27 @@ +from enum import Enum + +from abc import ABC, abstractmethod + + +class Reader(ABC): + """ + An abstract class used to represent a source Reader + """ + + class Component(Enum): + """ SSSD component to enable for reading """ + NSS = 1 # NSS Responder + PAM = 2 # PAM Responder + BE = 3 # Backend + + @abstractmethod + def __init__(self): + pass + + @abstractmethod + def __iter__(self): + pass + + @abstractmethod + def set_component(self): + pass diff --git a/src/tools/analyzer/sss_analyze b/src/tools/analyzer/sss_analyze new file mode 100755 index 0000000..3f1beaf --- /dev/null +++ b/src/tools/analyzer/sss_analyze @@ -0,0 +1,5 @@ +#!/usr/bin/env python + +from sssd import sss_analyze + +sss_analyze.run() diff --git a/src/tools/analyzer/sss_analyze.py b/src/tools/analyzer/sss_analyze.py new file mode 100644 index 0000000..18b998f --- /dev/null +++ b/src/tools/analyzer/sss_analyze.py @@ -0,0 +1,104 @@ +import argparse + +from sssd.modules import request +from sssd.parser import SubparsersAction + + +class Analyzer: + def add_subcommand(self, subcmd_grp, name, help_msg, func, opts): + """ + Add subcommand to existing subcommand group + + Args: + name(str): Subcommand name + help_msg(str): Help message for subcommand + func(function): Function to call on execution + opts(list of Object()): List of Option objects to add to subcommand + """ + # Create parser + req_parser = subcmd_grp.add_parser(name, help=help_msg) + + # Add subcommand options + self._add_subcommand_options(req_parser, opts) + + # Execute func() when argument is called + req_parser.set_defaults(func=func) + + def _add_subcommand_options(self, parser, opts): + """ + Add subcommand options to subcommand parser + + Args: + parser(str): Subcommand group parser + opts(list of Object()): List of Option objects to add to subcommand + """ + for opt in opts: + if opt.opt_type is bool: + if opt.short_opt is None: + parser.add_argument(opt.name, help=opt.help_msg, + action='store_true') + else: + parser.add_argument(opt.name, opt.short_opt, + help=opt.help_msg, action='store_true') + if opt.opt_type is int: + parser.add_argument(opt.name, help=opt.help_msg, + type=int) + + def load_modules(self, parser, parser_grp): + """ + Initialize analyzer modules from modules/* + + Args: + parser (ArgumentParser): Base parser object + parser_grp (argparse.Action): Parser group that can have + additional parsers attached. + """ + # Currently only the 'request' module exists + req = request.RequestAnalyzer() + cli = Analyzer() + + req.setup_args(parser_grp, cli) + + def setup_args(self): + """ + Top-level argument setup function. + Setup analyzer argument parsers and subcommand parser/options. + + Returns: + parser (ArgumentParser): Base parser object + """ + # top level parser + formatter = argparse.RawTextHelpFormatter + parser = argparse.ArgumentParser(description='Analyzer tool to assist ' + 'with SSSD log parsing', + formatter_class=formatter) + parser.add_argument('--source', default='files', choices=['files', + 'journald']) + parser.add_argument('--logdir', default='/var/log/sssd/', + help='SSSD Log directory to parse log files from') + + # Modules parser group + subparser = parser.add_subparsers(title=None, + action=SubparsersAction, + metavar='COMMANDS') + parser_grp = subparser.add_parser_group('Modules') + + # Load modules, subcommands are added in module.setup_args() + self.load_modules(parser, parser_grp) + + return parser + + def main(self): + parser = self.setup_args() + args = parser.parse_args() + + if not hasattr(args, 'func'): + parser.print_help() + return 0 + + args.func(args) + + +def run(): + analyzer = Analyzer() + analyzer.main() |