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protocol.py
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# emacs: -*- mode: python; py-indent-offset: 4; indent-tabs-mode: t -*- # vi: set ft=python sts=4 ts=4 sw=4 noet : # This file is part of Fail2Ban. # # Fail2Ban is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # Fail2Ban is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with Fail2Ban; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. # Author: Cyril Jaquier # __author__ = "Cyril Jaquier" __copyright__ = "Copyright (c) 2004 Cyril Jaquier" __license__ = "GPL" import textwrap def output(s): """Default output handler for printing protocol. Used to ease mocking in the test cases. """ print(s) ## # Describes the protocol used to communicate with the server. class dotdict(dict): def __getattr__(self, name): return self[name] CSPROTO = dotdict({ "EMPTY": b"", "END": b"<F2B_END_COMMAND>", "CLOSE": b"<F2B_CLOSE_COMMAND>" }) protocol = [ ['', "BASIC", ""], ["start", "starts the server and the jails"], ["restart", "restarts the server"], ["restart [--unban] [--if-exists] <JAIL>", "restarts the jail <JAIL> (alias for 'reload --restart ... <JAIL>')"], ["reload [--restart] [--unban] [--all]", "reloads the configuration without restarting of the server, the option '--restart' activates completely restarting of affected jails, thereby can unban IP addresses (if option '--unban' specified)"], ["reload [--restart] [--unban] [--if-exists] <JAIL>", "reloads the jail <JAIL>, or restarts it (if option '--restart' specified)"], ["stop", "stops all jails and terminate the server"], ["unban --all", "unbans all IP addresses (in all jails and database)"], ["unban <IP> ... <IP>", "unbans <IP> (in all jails and database)"], ["banned", "return jails with banned IPs as dictionary"], ["banned <IP> ... <IP>]", "return list(s) of jails where given IP(s) are banned"], ["status", "gets the current status of the server"], ["ping", "tests if the server is alive"], ["echo", "for internal usage, returns back and outputs a given string"], ["help", "return this output"], ["version", "return the server version"], ['', "LOGGING", ""], ["set loglevel <LEVEL>", "sets logging level to <LEVEL>. Levels: CRITICAL, ERROR, WARNING, NOTICE, INFO, " "DEBUG, TRACEDEBUG, HEAVYDEBUG or corresponding numeric value (50-5)"], ["get loglevel", "gets the logging level"], ["set logtarget <TARGET>", "sets logging target to <TARGET>. Can be STDOUT, STDERR, SYSLOG or a file"], ["get logtarget", "gets logging target"], ["set syslogsocket auto|<SOCKET>", "sets the syslog socket path to auto or <SOCKET>. Only used if logtarget is SYSLOG"], ["get syslogsocket", "gets syslog socket path"], ["flushlogs", "flushes the logtarget if a file and reopens it. For log rotation."], ['', "DATABASE", ""], ["set dbfile <FILE>", "set the location of fail2ban persistent datastore. Set to \"None\" to disable"], ["get dbfile", "get the location of fail2ban persistent datastore"], ["set dbmaxmatches <INT>", "sets the max number of matches stored in database per ticket"], ["get dbmaxmatches", "gets the max number of matches stored in database per ticket"], ["set dbpurgeage <SECONDS>", "sets the max age in <SECONDS> that history of bans will be kept"], ["get dbpurgeage", "gets the max age in seconds that history of bans will be kept"], ['', "JAIL CONTROL", ""], ["add <JAIL> <BACKEND>", "creates <JAIL> using <BACKEND>"], ["start <JAIL>", "starts the jail <JAIL>"], ["stop <JAIL>", "stops the jail <JAIL>. The jail is removed"], ["status <JAIL> [FLAVOR]", "gets the current status of <JAIL>, with optional flavor or extended info"], ['', "JAIL CONFIGURATION", ""], ["set <JAIL> idle on|off", "sets the idle state of <JAIL>"], ["set <JAIL> ignoreself true|false", "allows the ignoring of own IP addresses"], ["set <JAIL> addignoreip <IP>", "adds <IP> to the ignore list of <JAIL>"], ["set <JAIL> delignoreip <IP>", "removes <IP> from the ignore list of <JAIL>"], ["set <JAIL> ignorecommand <VALUE>", "sets ignorecommand of <JAIL>"], ["set <JAIL> ignorecache <VALUE>", "sets ignorecache of <JAIL>"], ["set <JAIL> addlogpath <FILE> ['tail']", "adds <FILE> to the monitoring list of <JAIL>, optionally starting at the 'tail' of the file (default 'head')."], ["set <JAIL> dellogpath <FILE>", "removes <FILE> from the monitoring list of <JAIL>"], ["set <JAIL> logencoding <ENCODING>", "sets the <ENCODING> of the log files for <JAIL>"], ["set <JAIL> addjournalmatch <MATCH>", "adds <MATCH> to the journal filter of <JAIL>"], ["set <JAIL> deljournalmatch <MATCH>", "removes <MATCH> from the journal filter of <JAIL>"], ["set <JAIL> addfailregex <REGEX>", "adds the regular expression <REGEX> which must match failures for <JAIL>"], ["set <JAIL> delfailregex <INDEX>", "removes the regular expression at <INDEX> for failregex"], ["set <JAIL> addignoreregex <REGEX>", "adds the regular expression <REGEX> which should match pattern to exclude for <JAIL>"], ["set <JAIL> delignoreregex <INDEX>", "removes the regular expression at <INDEX> for ignoreregex"], ["set <JAIL> findtime <TIME>", "sets the number of seconds <TIME> for which the filter will look back for <JAIL>"], ["set <JAIL> bantime <TIME>", "sets the number of seconds <TIME> a host will be banned for <JAIL>"], ["set <JAIL> datepattern <PATTERN>", "sets the <PATTERN> used to match date/times for <JAIL>"], ["set <JAIL> usedns <VALUE>", "sets the usedns mode for <JAIL>"], ["set <JAIL> attempt <IP> [<failure1> ... <failureN>]", "manually notify about <IP> failure"], ["set <JAIL> banip <IP> ... <IP>", "manually Ban <IP> for <JAIL>"], ["set <JAIL> unbanip [--report-absent] <IP> ... <IP>", "manually Unban <IP> in <JAIL>"], ["set <JAIL> maxretry <RETRY>", "sets the number of failures <RETRY> before banning the host for <JAIL>"], ["set <JAIL> maxmatches <INT>", "sets the max number of matches stored in memory per ticket in <JAIL>"], ["set <JAIL> maxlines <LINES>", "sets the number of <LINES> to buffer for regex search for <JAIL>"], ["set <JAIL> addaction <ACT>[ <PYTHONFILE> <JSONKWARGS>]", "adds a new action named <ACT> for <JAIL>. Optionally for a Python based action, a <PYTHONFILE> and <JSONKWARGS> can be specified, else will be a Command Action"], ["set <JAIL> delaction <ACT>", "removes the action <ACT> from <JAIL>"], ["", "COMMAND ACTION CONFIGURATION", ""], ["set <JAIL> action <ACT> actionstart <CMD>", "sets the start command <CMD> of the action <ACT> for <JAIL>"], ["set <JAIL> action <ACT> actionstop <CMD>", "sets the stop command <CMD> of the action <ACT> for <JAIL>"], ["set <JAIL> action <ACT> actioncheck <CMD>", "sets the check command <CMD> of the action <ACT> for <JAIL>"], ["set <JAIL> action <ACT> actionban <CMD>", "sets the ban command <CMD> of the action <ACT> for <JAIL>"], ["set <JAIL> action <ACT> actionunban <CMD>", "sets the unban command <CMD> of the action <ACT> for <JAIL>"], ["set <JAIL> action <ACT> timeout <TIMEOUT>", "sets <TIMEOUT> as the command timeout in seconds for the action <ACT> for <JAIL>"], ["", "GENERAL ACTION CONFIGURATION", ""], ["set <JAIL> action <ACT> <PROPERTY> <VALUE>", "sets the <VALUE> of <PROPERTY> for the action <ACT> for <JAIL>"], ["set <JAIL> action <ACT> <METHOD>[ <JSONKWARGS>]", "calls the <METHOD> with <JSONKWARGS> for the action <ACT> for <JAIL>"], ['', "JAIL INFORMATION", ""], ["get <JAIL> banned", "return banned IPs of <JAIL>"], ["get <JAIL> banned <IP> ... <IP>]", "return 1 if IP is banned in <JAIL> otherwise 0, or a list of 1/0 for multiple IPs"], ["get <JAIL> logpath", "gets the list of the monitored files for <JAIL>"], ["get <JAIL> logencoding", "gets the encoding of the log files for <JAIL>"], ["get <JAIL> journalmatch", "gets the journal filter match for <JAIL>"], ["get <JAIL> ignoreself", "gets the current value of the ignoring the own IP addresses"], ["get <JAIL> ignoreip", "gets the list of ignored IP addresses for <JAIL>"], ["get <JAIL> ignorecommand", "gets ignorecommand of <JAIL>"], ["get <JAIL> failregex", "gets the list of regular expressions which matches the failures for <JAIL>"], ["get <JAIL> ignoreregex", "gets the list of regular expressions which matches patterns to ignore for <JAIL>"], ["get <JAIL> findtime", "gets the time for which the filter will look back for failures for <JAIL>"], ["get <JAIL> bantime", "gets the time a host is banned for <JAIL>"], ["get <JAIL> datepattern", "gets the patern used to match date/times for <JAIL>"], ["get <JAIL> usedns", "gets the usedns setting for <JAIL>"], ["get <JAIL> banip [<SEP>|--with-time]", "gets the list of of banned IP addresses for <JAIL>. Optionally the separator character ('<SEP>', default is space) or the option '--with-time' (printing the times of ban) may be specified. The IPs are ordered by end of ban."], ["get <JAIL> maxretry", "gets the number of failures allowed for <JAIL>"], ["get <JAIL> maxmatches", "gets the max number of matches stored in memory per ticket in <JAIL>"], ["get <JAIL> maxlines", "gets the number of lines to buffer for <JAIL>"], ["get <JAIL> actions", "gets a list of actions for <JAIL>"], ["", "COMMAND ACTION INFORMATION",""], ["get <JAIL> action <ACT> actionstart", "gets the start command for the action <ACT> for <JAIL>"], ["get <JAIL> action <ACT> actionstop", "gets the stop command for the action <ACT> for <JAIL>"], ["get <JAIL> action <ACT> actioncheck", "gets the check command for the action <ACT> for <JAIL>"], ["get <JAIL> action <ACT> actionban", "gets the ban command for the action <ACT> for <JAIL>"], ["get <JAIL> action <ACT> actionunban", "gets the unban command for the action <ACT> for <JAIL>"], ["get <JAIL> action <ACT> timeout", "gets the command timeout in seconds for the action <ACT> for <JAIL>"], ["", "GENERAL ACTION INFORMATION", ""], ["get <JAIL> actionproperties <ACT>", "gets a list of properties for the action <ACT> for <JAIL>"], ["get <JAIL> actionmethods <ACT>", "gets a list of methods for the action <ACT> for <JAIL>"], ["get <JAIL> action <ACT> <PROPERTY>", "gets the value of <PROPERTY> for the action <ACT> for <JAIL>"], ] ## # Prints the protocol in a "man" format. This is used for the # "-h" output of fail2ban-client. def printFormatted(): INDENT=4 MARGIN=41 WIDTH=34 firstHeading = False for m in protocol: if m[0] == '' and firstHeading: output("") firstHeading = True first = True if len(m[0]) >= MARGIN: m[1] = ' ' * WIDTH + m[1] for n in textwrap.wrap(m[1], WIDTH, drop_whitespace=False): if first: line = ' ' * INDENT + m[0] + ' ' * (MARGIN - len(m[0])) + n.strip() first = False else: line = ' ' * (INDENT + MARGIN) + n.strip() output(line) ## # Prints the protocol in a "mediawiki" format. def printWiki(): firstHeading = False for m in protocol: if m[0] == '': if firstHeading: output("|}") __printWikiHeader(m[1], m[2]) firstHeading = True else: output("|-") output("| <span style=\"white-space:nowrap;\"><tt>" + m[0] + "</tt></span> || || " + m[1]) output("|}") def __printWikiHeader(section, desc): output("") output("=== " + section + " ===") output("") output(desc) output("") output("{|") output("| '''Command''' || || '''Description'''")