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668cd4eb20
[use dist_examples_SCRIPTS instead of EXTRA_DIST -smcv] Bug: https://bugs.freedesktop.org/show_bug.cgi?id=84598 Reviewed-by: Simon McVittie <simon.mcvittie@collabora.co.uk>
112 lines
3.8 KiB
Python
Executable file
112 lines
3.8 KiB
Python
Executable file
#!/usr/bin/env python
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import sys
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import argparse
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import dbus
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import time
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def get_cmdline(pid):
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cmdline = ''
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if pid > 0:
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try:
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procpath = '/proc/' + str(pid) + '/cmdline'
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with open(procpath, 'r') as f:
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cmdline = " ".join(f.readline().split('\0'))
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except:
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pass
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return cmdline
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# Parsing parameters
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parser = argparse.ArgumentParser(description='Testing D-Bus match rules')
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parser.add_argument('--session', help='session bus', action="store_true")
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parser.add_argument('--system', help='system bus', action="store_true")
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parser.add_argument('--all', help='print all match rules', action="store_true")
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args = parser.parse_args()
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if args.system and args.session:
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parser.print_help()
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sys.exit(1)
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# Fetch data from the bus driver
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if args.system:
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bus = dbus.SystemBus()
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else:
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bus = dbus.SessionBus()
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remote_object = bus.get_object("org.freedesktop.DBus",
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"/org/freedesktop/DBus")
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bus_iface = dbus.Interface(remote_object, "org.freedesktop.DBus")
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stats_iface = dbus.Interface(remote_object, "org.freedesktop.DBus.Debug.Stats")
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try:
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match_rules = stats_iface.GetAllMatchRules()
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except:
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print("GetConnectionMatchRules failed: did you enable the Stats interface?")
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sys.exit(1)
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names = bus_iface.ListNames()
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unique_names = [ a for a in names if a.startswith(":") ]
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pids = dict((name, bus_iface.GetConnectionUnixProcessID(name)) for name in unique_names)
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cmds = dict((name, get_cmdline(pids[name])) for name in unique_names)
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well_known_names = [ a for a in names if a not in unique_names ]
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owners = dict((wkn, bus_iface.GetNameOwner(wkn)) for wkn in well_known_names)
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rules = dict((k_rules,
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dict({
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'wkn': [k for k, v in owners.items() if v == k_rules],
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'pid': pids[k_rules],
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'cmd': cmds[k_rules] or "",
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'rules': v_rules,
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'warnings': dict({
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'not_signal': [a for a in v_rules if "type='signal'" not in a],
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'no_sender': [a for a in v_rules if "sender=" not in a],
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'local': [a for a in v_rules if "org.freedesktop.DBus.Local" in a],
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'NameOwnerChanged_arg0': [a for a in v_rules if "member='NameOwnerChanged'" in a and "arg0" not in a]
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})
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})
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) for k_rules, v_rules in match_rules.items())
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warnings = dict({
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'not_signal': 'Match rule without selecting signals',
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'no_sender': 'Match rule without a sender criteria',
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'local': 'Match rule on the org.freedesktop.DBus.Local interface',
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'NameOwnerChanged_arg0': 'Match rule on NameOwnerChanged without a arg0* criteria'
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})
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# Print the match rules
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# print all match rules without analysing them
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if args.all:
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for name in rules:
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print("Connection %s with pid %d '%s' (%s): %d match rules, %d warnings"
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% (name, rules[name]['pid'], rules[name]['cmd'],
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' '.join(rules[name]['wkn']), len(rules[name]['rules']),
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len(sum(rules[name]['warnings'].values(), []))))
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for rule in rules[name]['rules']:
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print("\t%s" % (rule))
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print("")
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sys.exit(0)
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# analyse match rules and print only the suspicious ones
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for conn,data in rules.items():
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warnings_count = len(sum(data['warnings'].values(), []))
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if warnings_count == 0:
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continue
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print("Connection %s with pid %d '%s' (%s): %d match rules, %d warnings"
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% (conn, data['pid'], data['cmd'], ' '.join(data['wkn']),
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len(data['rules']), warnings_count))
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for warn_code,rule_list in [(warn_code,rule_list) \
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for warn_code, rule_list \
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in data['warnings'].items() \
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if len(rule_list) > 0]:
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print(" - %s:" % (warnings[warn_code]))
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for rule in rule_list:
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print(" - %s" % (rule))
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print("")
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sys.exit(0)
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