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author	Kim Alvefur <zash@zash.se>
date	Fri, 19 Feb 2021 23:42:12 +0100
parents	c316ad1087d4
children	bb8459c220c9

rev	line source
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4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	2 labels:
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	3 - 'Stage-Alpha'
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	4 summary: 'A rule-based stanza filtering module'
4169 ae738969f38a mod_firewall: Add packaging metadata to include libraries Kim Alvefur <zash@zash.se> parents: 4152 diff changeset	5 rockspec:
ae738969f38a mod_firewall: Add packaging metadata to include libraries Kim Alvefur <zash@zash.se> parents: 4152 diff changeset	6 build:
ae738969f38a mod_firewall: Add packaging metadata to include libraries Kim Alvefur <zash@zash.se> parents: 4152 diff changeset	7 modules:
ae738969f38a mod_firewall: Add packaging metadata to include libraries Kim Alvefur <zash@zash.se> parents: 4152 diff changeset	8 mod_firewall.actions: actions.lib.lua
ae738969f38a mod_firewall: Add packaging metadata to include libraries Kim Alvefur <zash@zash.se> parents: 4152 diff changeset	9 mod_firewall.conditions: conditions.lib.lua
ae738969f38a mod_firewall: Add packaging metadata to include libraries Kim Alvefur <zash@zash.se> parents: 4152 diff changeset	10 mod_firewall.definitions: definitions.lib.lua
ae738969f38a mod_firewall: Add packaging metadata to include libraries Kim Alvefur <zash@zash.se> parents: 4152 diff changeset	11 mod_firewall.marks: marks.lib.lua
ae738969f38a mod_firewall: Add packaging metadata to include libraries Kim Alvefur <zash@zash.se> parents: 4152 diff changeset	12 mod_firewall.test: test.lib.lua
ae738969f38a mod_firewall: Add packaging metadata to include libraries Kim Alvefur <zash@zash.se> parents: 4152 diff changeset	13 ---
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	14
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	15 ------------------------------------------------------------------------
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1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	17 Note: mod\_firewall is in its very early stages. This documentation
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	18 is liable to change, and some described functionality may be missing,
2375 7ad312b4cefe mod_firewall/README: Remove mention of comments section from google code Kim Alvefur <zash@zash.se> parents: 2370 diff changeset	19 incomplete or contain bugs.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	20
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	21 ------------------------------------------------------------------------
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	22
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	23 Introduction
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	24 ============
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	25
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	26 A firewall is an invaluable tool in the sysadmin's toolbox. However
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	27 while low-level firewalls such as iptables and pf are incredibly good at
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	28 what they do, they are generally not able to handle application-layer
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	29 rules.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	30
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	31 The goal of mod\_firewall is to provide similar services at the XMPP
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	32 layer. Based on rule scripts it can efficiently block, bounce, drop,
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	33 forward, copy, redirect stanzas and more! Furthermore all rules can be
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	34 applied and updated dynamically at runtime without restarting the
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	35 server.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	36
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	37 Details
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	38 =======
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	39
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	40 mod\_firewall loads one or more scripts, and compiles these to Lua code
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	41 that reacts to stanzas flowing through Prosody. The firewall script
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	42 syntax is unusual, but straightforward.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	43
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	44 A firewall script is dominated by rules. Each rule has two parts:
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	45 conditions, and actions. When a stanza matches all of the conditions,
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	46 all of the actions are executed in order.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	47
29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	48 Here is a simple example to block stanzas from spammer@example.com:
29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	49
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	50 FROM: spammer@example.com
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	51 DROP.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	52
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	53 FROM is a condition, and DROP is an action. This is about as simple as
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	54 it gets. How about heading to the other extreme? Let's demonstrate
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	55 something more complex that mod\_firewall can do for you:
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	56
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	57 %ZONE myorganisation: staff.myorg.example, support.myorg.example
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	58
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	59 ENTERING: myorganisation
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	60 KIND: message
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	61 TIME: 12am-9am, 5pm-12am, Saturday, Sunday
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	62 REPLY=Sorry, I am afraid our office is closed at the moment. If you need assistance, please call our 24-hour support line on 123-456-789.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	63
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	64 This rule will reply with a short message whenever someone tries to send
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	65 a message to someone at any of the hosts defined in the 'myorganisation'
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	66 outside of office hours.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	67
2387 5bfb2ccab2ab mod_firewall: README: Add more info about specifying rule set files Matthew Wild <mwild1@gmail.com> parents: 2375 diff changeset	68 Specifying rule sets
5bfb2ccab2ab mod_firewall: README: Add more info about specifying rule set files Matthew Wild <mwild1@gmail.com> parents: 2375 diff changeset	69 --------------------
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	70
2387 5bfb2ccab2ab mod_firewall: README: Add more info about specifying rule set files Matthew Wild <mwild1@gmail.com> parents: 2375 diff changeset	71 Firewall rules should be written into text files, e.g. `ruleset.pfw` file.
5bfb2ccab2ab mod_firewall: README: Add more info about specifying rule set files Matthew Wild <mwild1@gmail.com> parents: 2375 diff changeset	72 One or more rule files can be specified in the configuration using:
5bfb2ccab2ab mod_firewall: README: Add more info about specifying rule set files Matthew Wild <mwild1@gmail.com> parents: 2375 diff changeset	73
5bfb2ccab2ab mod_firewall: README: Add more info about specifying rule set files Matthew Wild <mwild1@gmail.com> parents: 2375 diff changeset	74 firewall_scripts = { "path/to/ruleset.pfw", "path/to/ruleset2.pfw" }
5bfb2ccab2ab mod_firewall: README: Add more info about specifying rule set files Matthew Wild <mwild1@gmail.com> parents: 2375 diff changeset	75
4236 c316ad1087d4 mod_firewall: Some additional documentation improvements, particularly adding section links where needed Matthew Wild <mwild1@gmail.com> parents: 4235 diff changeset	76 If multiple files are specified and they both add rules to the same [chains](#chains),
2387 5bfb2ccab2ab mod_firewall: README: Add more info about specifying rule set files Matthew Wild <mwild1@gmail.com> parents: 2375 diff changeset	77 each file's rules will be processed in order, but the order of files is undefined.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	78
4152 87daef9ed4e7 Improve mod_firewall readme Christian Weiske <cweiske@cweiske.de> parents: 4127 diff changeset	79 Reloading Prosody's configuration also reloads firewall rules.
87daef9ed4e7 Improve mod_firewall readme Christian Weiske <cweiske@cweiske.de> parents: 4127 diff changeset	80
87daef9ed4e7 Improve mod_firewall readme Christian Weiske <cweiske@cweiske.de> parents: 4127 diff changeset	81 Make sure that `firewall_scripts` is in the global section of the configuration file
87daef9ed4e7 Improve mod_firewall readme Christian Weiske <cweiske@cweiske.de> parents: 4127 diff changeset	82 and not below a virtual host or a component - unless you want per-vhost
87daef9ed4e7 Improve mod_firewall readme Christian Weiske <cweiske@cweiske.de> parents: 4127 diff changeset	83 firewall rules.
87daef9ed4e7 Improve mod_firewall readme Christian Weiske <cweiske@cweiske.de> parents: 4127 diff changeset	84
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	85 Conditions
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	86 ----------
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	87
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	88 All conditions must come before any action in a rule block. The
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	89 condition name is followed by a colon (':'), and the value to test for.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	90
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	91 A condition can be preceded or followed by `NOT` to negate its match.
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	92 For example:
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	93
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	94 NOT FROM: user@example.com
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	95 KIND NOT: message
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	96
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	97 Some conditions do not take parameters, and these should end with just a
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	98 question mark, like:
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	99
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	100 IN ROSTER?
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	101
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	102 ### Zones
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	103
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	104 A 'zone' is one or more hosts or JIDs. It is possible to match when a
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	105 stanza is entering or leaving a zone, while at the same time not
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	106 matching traffic passing between JIDs in the same zone.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	107
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	108 Zones are defined at the top of a script with the following syntax (they
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	109 are not part of a rule block):
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	110
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	111 %ZONE myzone: host1, host2, user@host3, foo.bar.example
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	112
2388 b6d59998dba7 mod_firewall: README: Document dynamic '$local' zone Matthew Wild <mwild1@gmail.com> parents: 2387 diff changeset	113 There is an automatic zone named `$local`, which automatically includes
b6d59998dba7 mod_firewall: README: Document dynamic '$local' zone Matthew Wild <mwild1@gmail.com> parents: 2387 diff changeset	114 all of the current server's active hosts (including components). It can
b6d59998dba7 mod_firewall: README: Document dynamic '$local' zone Matthew Wild <mwild1@gmail.com> parents: 2387 diff changeset	115 be used to match stanzas entering or leaving the current server.
b6d59998dba7 mod_firewall: README: Document dynamic '$local' zone Matthew Wild <mwild1@gmail.com> parents: 2387 diff changeset	116
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	117 A host listed in a zone also matches all users on that host (but not
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	118 subdomains).
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	119
29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	120 The following zone-matching conditions are supported:
29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	121
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	122 Condition Matches
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	123 ------------ ------------------------------------------
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	124 `ENTERING` When a stanza is entering the named zone
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	125 `LEAVING` When a stanza is leaving the named zone
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	126
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	127 ### Lists
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	128
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	129 It is possible to create or load lists of strings for use in scripts. For example, you might load a JID blacklist,
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	130 a list of malware URLs or simple words that you want to filter messages on.
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	131
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	132 List type Example
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	133 ----------- -----------------------
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	134 memory %LIST spammers: memory
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	135 file %LIST spammers: file:/etc/spammers.txt
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	136 http %LIST spammers: http://example.com/spammers.txt
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	137
4126 68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	138 #### List types
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	139 ##### memory
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	140
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	141 ```
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	142 %LIST name: memory (limit: number)
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	143 ```
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	144
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	145 A memory-only list, with an optional limit. Supports addition and removal of items by scripts.
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	146
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	147 If a limit is provided, the oldest item will be discarded to make room for a new item if the
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	148 list is full. The limit is useful to prevent infinite memory growth on busy servers.
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	149
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	150 ##### file
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	151
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	152 ```
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	153 %LIST name: file:/path/to/file (missing: string)
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	154 ```
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	155
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	156 Reads a list from a file. The list can be added to and removed from by scripts, but
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	157 these changes do not persist between restarts.
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	158
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	159 If the file is missing, an error will be raised. The optional 'missing' parameter can be set
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	160 to 'ignore' (e.g. `(missing: ignore)`) to ignore a missing file.
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	161
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	162 ##### http
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	163
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	164 ```
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	165 %LIST name: http://example.com/ (ttl: number, pattern: pat, hash: sha1, checkcerts: when-sni)
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	166 ```
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	167
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	168 Fetches a list from a HTTP or HTTPS URL. The following options are accepted:
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	169
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	170 Option Description
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	171 ------- -----------
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	172 ttl Seconds to cache the list for. After expiry, it will be refetched. Default 3600 (1 hour).
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	173 pattern Optional pattern used to extract list entries from the response. Default is to treat each line as a single item.
68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	174 hash Optional hash to be applied to items before looking them up in the list, e.g. sha1 or sha256.
4127 e9e10ec1b91c mod_firewall: Add checkcerts option for HTTP lists, cert verification disabled when SNI unsupported Matthew Wild <mwild1@gmail.com> parents: 4126 diff changeset	175 checkcert Whether to verify HTTPS certificates. May be "always", "never" or "when-sni". Default "when-sni".
e9e10ec1b91c mod_firewall: Add checkcerts option for HTTP lists, cert verification disabled when SNI unsupported Matthew Wild <mwild1@gmail.com> parents: 4126 diff changeset	176
e9e10ec1b91c mod_firewall: Add checkcerts option for HTTP lists, cert verification disabled when SNI unsupported Matthew Wild <mwild1@gmail.com> parents: 4126 diff changeset	177 The "when-sni" default disables certificate verification when Prosody's HTTP client API doesn't support SNI,
e9e10ec1b91c mod_firewall: Add checkcerts option for HTTP lists, cert verification disabled when SNI unsupported Matthew Wild <mwild1@gmail.com> parents: 4126 diff changeset	178 as in Prosody 0.11.6 and earlier.
4126 68ceb7e0cfe6 mod_firewall: Add docs for list types and parameters Matthew Wild <mwild1@gmail.com> parents: 4072 diff changeset	179
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	180 #### CHECK LIST
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	181
4236 c316ad1087d4 mod_firewall: Some additional documentation improvements, particularly adding section links where needed Matthew Wild <mwild1@gmail.com> parents: 4235 diff changeset	182 Checks whether a simple [expression](#expressions) is found in a given list.
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	183
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	184 Example:
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	185
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	186 %LIST blacklist: file:/etc/prosody/blacklist.txt
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	187
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	188 # Rule to block presence subscription requests from blacklisted JIDs
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	189 KIND: presence
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	190 TYPE: subscribe
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	191 CHECK LIST: blacklist contains $<@from>
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	192 BOUNCE=policy-violation (Your JID is blacklisted)
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	193
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	194 #### SCAN
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	195
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	196 SCAN allows you to search inside a stanza for a given pattern, and check each result against a list. For example,
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	197 you could scan a message body for words and check if any of the words are found in a given list.
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	198
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	199 Before using SCAN, you need to define a search location and a pattern. The search location uses the same 'path'
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	200 format as documented under the 'INSPECT' condition. Patterns can be any valid Lua pattern.
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	201
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	202 To use the above example:
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	203
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	204 # Define a search location called 'body' which fetches the text of the 'body' element
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	205 %SEARCH body: body#
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	206 # Define a pattern called 'word' which matches any sequence of letters
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	207 %PATTERN word: [A-Za-z]+
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	208 # Finally, we also need our list of "bad" words:
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	209 %LIST badwords: file:/etc/prosody/bad_words.txt
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	210
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	211 # Now we can use these to SCAN incoming stanzas
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	212 # If it finds a match, bounce the stanza
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	213 SCAN: body for word in badwords
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	214 BOUNCE=policy-violation (This word is not allowed!)
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	215
2545 9b46d24edf0d mod_firewall: Add and document COUNT condition Matthew Wild <mwild1@gmail.com> parents: 2540 diff changeset	216 #### COUNT
9b46d24edf0d mod_firewall: Add and document COUNT condition Matthew Wild <mwild1@gmail.com> parents: 2540 diff changeset	217
9b46d24edf0d mod_firewall: Add and document COUNT condition Matthew Wild <mwild1@gmail.com> parents: 2540 diff changeset	218 COUNT is similar to SCAN, in that it uses a defined SEARCH and breaks it up according to a PATTERN. Then it
9b46d24edf0d mod_firewall: Add and document COUNT condition Matthew Wild <mwild1@gmail.com> parents: 2540 diff changeset	219 counts the number of results.
9b46d24edf0d mod_firewall: Add and document COUNT condition Matthew Wild <mwild1@gmail.com> parents: 2540 diff changeset	220
9b46d24edf0d mod_firewall: Add and document COUNT condition Matthew Wild <mwild1@gmail.com> parents: 2540 diff changeset	221 For example, to block every message with more than one URL:
9b46d24edf0d mod_firewall: Add and document COUNT condition Matthew Wild <mwild1@gmail.com> parents: 2540 diff changeset	222
9b46d24edf0d mod_firewall: Add and document COUNT condition Matthew Wild <mwild1@gmail.com> parents: 2540 diff changeset	223 # Define a search location called 'body' which fetches the text of the 'body' element
9b46d24edf0d mod_firewall: Add and document COUNT condition Matthew Wild <mwild1@gmail.com> parents: 2540 diff changeset	224 %SEARCH body: body#
9b46d24edf0d mod_firewall: Add and document COUNT condition Matthew Wild <mwild1@gmail.com> parents: 2540 diff changeset	225 # Define a pattern called 'url' which matches HTTP links
9b46d24edf0d mod_firewall: Add and document COUNT condition Matthew Wild <mwild1@gmail.com> parents: 2540 diff changeset	226 %PATTERN url: https?://%S+
9b46d24edf0d mod_firewall: Add and document COUNT condition Matthew Wild <mwild1@gmail.com> parents: 2540 diff changeset	227
9b46d24edf0d mod_firewall: Add and document COUNT condition Matthew Wild <mwild1@gmail.com> parents: 2540 diff changeset	228 COUNT: url in body > 1
9b46d24edf0d mod_firewall: Add and document COUNT condition Matthew Wild <mwild1@gmail.com> parents: 2540 diff changeset	229 BOUNCE=policy-violation (Up to one HTTP URL is allowed in messages)
9b46d24edf0d mod_firewall: Add and document COUNT condition Matthew Wild <mwild1@gmail.com> parents: 2540 diff changeset	230
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	231 ### Stanza matching
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	232
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	233 Condition Matches
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	234 ----------- ------------------------------------------------------------------------------------------------------------------------------------------------------------
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	235 `KIND` The kind of stanza. May be 'message', 'presence' or 'iq'
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	236 `TYPE` The type of stanza. This varies depending on the kind of stanza. See 'Stanza types' below for more information.
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	237 `PAYLOAD` The stanza contains a child with the given namespace. Useful for determining the type of an iq request, or whether a message contains a certain extension.
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	238 `INSPECT` The node at the specified path exists or matches a given string. This allows you to look anywhere inside a stanza. See below for examples and more.
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	239
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	240 #### Stanza types
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	241
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	242 Stanza Valid types
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	243 ---------- ------------------------------------------------------------------------------------------
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	244 iq get, set, result, error
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	245 presence available, unavailable, probe, subscribe, subscribed, unsubscribe, unsubscribed, error
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	246 message normal, chat, groupchat, headline, error
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	247
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	248 Note: The type 'available' for presence does not actually appear in
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	249 the protocol. Available presence is signalled by the omission of a type.
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	250 Similarly, a message stanza with no type is equivalent to one of type
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	251 'normal'. mod\_firewall handles these cases for you automatically.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	252
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	253 ### Sender/recipient matching
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	254
2576 95b79d515a65 mod_firewall: README: Document TO/FROM ADMIN, FORWARD, TO SELF and TO FULL JID Matthew Wild <mwild1@gmail.com> parents: 2559 diff changeset	255 Condition Matches
95b79d515a65 mod_firewall: README: Document TO/FROM ADMIN, FORWARD, TO SELF and TO FULL JID Matthew Wild <mwild1@gmail.com> parents: 2559 diff changeset	256 ------------- -------------------------------------------------------
95b79d515a65 mod_firewall: README: Document TO/FROM ADMIN, FORWARD, TO SELF and TO FULL JID Matthew Wild <mwild1@gmail.com> parents: 2559 diff changeset	257 `FROM` The JID in the 'from' attribute matches the given JID.
95b79d515a65 mod_firewall: README: Document TO/FROM ADMIN, FORWARD, TO SELF and TO FULL JID Matthew Wild <mwild1@gmail.com> parents: 2559 diff changeset	258 `TO` The JID in the 'to' attribute matches the given JID.
95b79d515a65 mod_firewall: README: Document TO/FROM ADMIN, FORWARD, TO SELF and TO FULL JID Matthew Wild <mwild1@gmail.com> parents: 2559 diff changeset	259 `TO SELF` The stanza is sent by any of a user's resources to their own bare JID.
95b79d515a65 mod_firewall: README: Document TO/FROM ADMIN, FORWARD, TO SELF and TO FULL JID Matthew Wild <mwild1@gmail.com> parents: 2559 diff changeset	260 `TO FULL JID` The stanza is addressed to a valid full JID on the local server (full JIDs include a resource at the end, and only exist for the lifetime of a single session, therefore the recipient must be online, or this check will not match).
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	261
4236 c316ad1087d4 mod_firewall: Some additional documentation improvements, particularly adding section links where needed Matthew Wild <mwild1@gmail.com> parents: 4235 diff changeset	262 The TO and FROM conditions both accept wildcards in the JID when it is
c316ad1087d4 mod_firewall: Some additional documentation improvements, particularly adding section links where needed Matthew Wild <mwild1@gmail.com> parents: 4235 diff changeset	263 enclosed in angle brackets ('\<...\>'). For example:
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	264
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	265 # All users at example.com
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	266 FROM: <*>@example.com
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	267
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	268 # The user 'admin' on any subdomain of example.com
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	269 FROM: admin@<*.example.com>
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	270
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	271 You can also use [Lua's pattern
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	272 matching](http://www.lua.org/manual/5.1/manual.html#5.4.1) for more
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	273 powerful matching abilities. Patterns are a lightweight
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	274 regular-expression alternative. Simply contain the pattern in double
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	275 angle brackets. The pattern is automatically anchored at the start and
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	276 end (so it must match the entire portion of the JID).
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	277
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	278 # Match admin@example.com, and admin1@example.com, etc.
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	279 FROM: <<admin%d*>>@example.com
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	280
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	281 Note: It is important to know that 'example.com' is a valid JID on
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	282 its own, and does not match 'user@example.com'. To perform domain
4236 c316ad1087d4 mod_firewall: Some additional documentation improvements, particularly adding section links where needed Matthew Wild <mwild1@gmail.com> parents: 4235 diff changeset	283 whitelists or blacklists, use [Zones](#zones).
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	284
2047 2ec7c0b8a371 mod_firewall/README: Fix table Kim Alvefur <zash@zash.se> parents: 2036 diff changeset	285 Condition Matches
2ec7c0b8a371 mod_firewall/README: Fix table Kim Alvefur <zash@zash.se> parents: 2036 diff changeset	286 ---------------- ---------------------------------------------------------------
2ec7c0b8a371 mod_firewall/README: Fix table Kim Alvefur <zash@zash.se> parents: 2036 diff changeset	287 `FROM_EXACTLY` The JID in the 'from' attribute exactly matches the given JID
2ec7c0b8a371 mod_firewall/README: Fix table Kim Alvefur <zash@zash.se> parents: 2036 diff changeset	288 `TO_EXACTLY` The JID in the 'to' attribute exactly matches the given JID
2036 7ba6ed553c93 mod_firewall/conditions: Add FROM_EXACTLY and TO_EXACTLY Matthew Wild <mwild1@gmail.com> parents: 2002 diff changeset	289
7ba6ed553c93 mod_firewall/conditions: Add FROM_EXACTLY and TO_EXACTLY Matthew Wild <mwild1@gmail.com> parents: 2002 diff changeset	290 These additional conditions do not support pattern matching, but are
7ba6ed553c93 mod_firewall/conditions: Add FROM_EXACTLY and TO_EXACTLY Matthew Wild <mwild1@gmail.com> parents: 2002 diff changeset	291 useful to match the exact to/from address on a stanza. For example, if
7ba6ed553c93 mod_firewall/conditions: Add FROM_EXACTLY and TO_EXACTLY Matthew Wild <mwild1@gmail.com> parents: 2002 diff changeset	292 no resource is specified then only bare JIDs will be matched. TO and FROM
7ba6ed553c93 mod_firewall/conditions: Add FROM_EXACTLY and TO_EXACTLY Matthew Wild <mwild1@gmail.com> parents: 2002 diff changeset	293 match all resources if no resource is specified to match.
7ba6ed553c93 mod_firewall/conditions: Add FROM_EXACTLY and TO_EXACTLY Matthew Wild <mwild1@gmail.com> parents: 2002 diff changeset	294
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	295 Note: Some chains execute before Prosody has performed any
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	296 normalisation or validity checks on the to/from JIDs on an incoming
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	297 stanza. It is not advisable to perform access control or similar rules
4236 c316ad1087d4 mod_firewall: Some additional documentation improvements, particularly adding section links where needed Matthew Wild <mwild1@gmail.com> parents: 4235 diff changeset	298 on JIDs in these chains (see the [chain documentation](#chains) for more info).
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	299
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	300 #### INSPECT
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	301
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	302 INSPECT takes a 'path' through the stanza to get a string (an attribute
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	303 value or text content). An example is the best way to explain. Let's
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	304 check that a user is not trying to register an account with the username
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	305 'admin'. This stanza comes from [XEP-0077: In-band
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	306 Registration](http://xmpp.org/extensions/xep-0077.html#example-4):
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	307
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	308 ``` xml
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	309 <iq type='set' id='reg2'>
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	310 <query xmlns='jabber:iq:register'>
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	311 <username>bill</username>
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	312 <password>Calliope</password>
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	313 <email>bard@shakespeare.lit</email>
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	314 </query>
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	315 </iq>
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	316 ```
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	317
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	318 KIND: iq
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	319 TYPE: set
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	320 PAYLOAD: jabber:iq:register
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	321 INSPECT: {jabber:iq:register}query/username#=admin
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	322 BOUNCE=not-allowed (The username 'admin' is reserved.)
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	323
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	324 That weird string deserves some explanation. It is a path, divided into
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	325 segments by '/'. Each segment describes an element by its name,
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	326 optionally prefixed by its namespace in curly braces ('{...}'). If the
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	327 path ends with a '\#' then the text content of the last element will be
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	328 returned. If the path ends with '@name' then the value of the attribute
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	329 'name' will be returned.
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	330
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	331 You can use INSPECT to test for the existence of an element or attribute,
4235 45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	332 or you can check if it matches a specific value, e.g. by appending `=VALUE`
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	333 (like in the example above, that checks if the content of username is 'admin').
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	334
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	335 #### INSPECT comparison operators
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	336
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	337 As well as checking for an exact string match, there are some other modifiers
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	338 you can apply to the comparison:
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	339
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	340 Comparison Matches when
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	341 ------------- -------------------------------------------------------
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	342 `=` The value is exactly the given string.
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	343 `/=` The value is or contains the given string (e.g. `/=admin` would match `administrator` or `myadmin`).
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	344 `~=` The value matches the given [Lua pattern](https://www.lua.org/manual/5.2/manual.html#6.4.1).
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	345
4235 45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	346 Finally, if the comparison operator is preceded by a `$` character, [expressions](#expressions)
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	347 will be interpreted in the string following the comparison operator.
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	348
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	349 e.g. `INSPECT: {jabber:iq:register}query/username}$/=$(session.host)` would match
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	350 if the username of an account registration contained the session's current hostname
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	351 somewhere in it.
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	352
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	353 #### INSPECT performance
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	354
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	355 INSPECT can be somewhat slower than the other stanza matching conditions. To
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	356 minimise performance impact, always place it below other faster
4235 45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	357 condition checks where possible (e.g. in the example above we first checked KIND,
45606c9f529a mod_firewall: Improve 'INSPECT' comparison operator documentation Matthew Wild <mwild1@gmail.com> parents: 4169 diff changeset	358 TYPE and PAYLOAD matched what we wanted before reaching the INSPECT rule).
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	359
2342 6848297cf40a mod_firewall: Add conditions for testing whether a sender of a stanza is in the recipient's roster (or in a certain roster group) Matthew Wild <mwild1@gmail.com> parents: 2114 diff changeset	360 ### Roster
6848297cf40a mod_firewall: Add conditions for testing whether a sender of a stanza is in the recipient's roster (or in a certain roster group) Matthew Wild <mwild1@gmail.com> parents: 2114 diff changeset	361
6848297cf40a mod_firewall: Add conditions for testing whether a sender of a stanza is in the recipient's roster (or in a certain roster group) Matthew Wild <mwild1@gmail.com> parents: 2114 diff changeset	362 These functions access the roster of the recipient (only). Therefore they cannot (currently)
4236 c316ad1087d4 mod_firewall: Some additional documentation improvements, particularly adding section links where needed Matthew Wild <mwild1@gmail.com> parents: 4235 diff changeset	363 be used in some [chains](#chains), such as for outgoing messages (the recipient may be on another server).
2342 6848297cf40a mod_firewall: Add conditions for testing whether a sender of a stanza is in the recipient's roster (or in a certain roster group) Matthew Wild <mwild1@gmail.com> parents: 2114 diff changeset	364
6848297cf40a mod_firewall: Add conditions for testing whether a sender of a stanza is in the recipient's roster (or in a certain roster group) Matthew Wild <mwild1@gmail.com> parents: 2114 diff changeset	365 Performance note: this check can potentially cause storage access (especially if the recipient
6848297cf40a mod_firewall: Add conditions for testing whether a sender of a stanza is in the recipient's roster (or in a certain roster group) Matthew Wild <mwild1@gmail.com> parents: 2114 diff changeset	366 is currently offline), so you may want to limit its use in high-traffic situations, and place
6848297cf40a mod_firewall: Add conditions for testing whether a sender of a stanza is in the recipient's roster (or in a certain roster group) Matthew Wild <mwild1@gmail.com> parents: 2114 diff changeset	367 it below other checks (such as a rate limiter).
6848297cf40a mod_firewall: Add conditions for testing whether a sender of a stanza is in the recipient's roster (or in a certain roster group) Matthew Wild <mwild1@gmail.com> parents: 2114 diff changeset	368
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	369 #### IN ROSTER
2342 6848297cf40a mod_firewall: Add conditions for testing whether a sender of a stanza is in the recipient's roster (or in a certain roster group) Matthew Wild <mwild1@gmail.com> parents: 2114 diff changeset	370
6848297cf40a mod_firewall: Add conditions for testing whether a sender of a stanza is in the recipient's roster (or in a certain roster group) Matthew Wild <mwild1@gmail.com> parents: 2114 diff changeset	371 Tests whether the sender is in the recipient's roster.
6848297cf40a mod_firewall: Add conditions for testing whether a sender of a stanza is in the recipient's roster (or in a certain roster group) Matthew Wild <mwild1@gmail.com> parents: 2114 diff changeset	372
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	373 IN ROSTER?
2342 6848297cf40a mod_firewall: Add conditions for testing whether a sender of a stanza is in the recipient's roster (or in a certain roster group) Matthew Wild <mwild1@gmail.com> parents: 2114 diff changeset	374
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	375 #### IN ROSTER GROUP
2342 6848297cf40a mod_firewall: Add conditions for testing whether a sender of a stanza is in the recipient's roster (or in a certain roster group) Matthew Wild <mwild1@gmail.com> parents: 2114 diff changeset	376
6848297cf40a mod_firewall: Add conditions for testing whether a sender of a stanza is in the recipient's roster (or in a certain roster group) Matthew Wild <mwild1@gmail.com> parents: 2114 diff changeset	377 Tests whether the sender is in the recipient's roster, and in the named group.
6848297cf40a mod_firewall: Add conditions for testing whether a sender of a stanza is in the recipient's roster (or in a certain roster group) Matthew Wild <mwild1@gmail.com> parents: 2114 diff changeset	378
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	379 IN ROSTER GROUP: Friends
2342 6848297cf40a mod_firewall: Add conditions for testing whether a sender of a stanza is in the recipient's roster (or in a certain roster group) Matthew Wild <mwild1@gmail.com> parents: 2114 diff changeset	380
2410 898e70e85185 mod_firewall/README: Document SUBSCRIBED Kim Alvefur <zash@zash.se> parents: 2390 diff changeset	381 #### SUBSCRIBED
898e70e85185 mod_firewall/README: Document SUBSCRIBED Kim Alvefur <zash@zash.se> parents: 2390 diff changeset	382
898e70e85185 mod_firewall/README: Document SUBSCRIBED Kim Alvefur <zash@zash.se> parents: 2390 diff changeset	383 Tests whether the recipient is subscribed to the sender, ie will receive
898e70e85185 mod_firewall/README: Document SUBSCRIBED Kim Alvefur <zash@zash.se> parents: 2390 diff changeset	384 presence updates from them.
898e70e85185 mod_firewall/README: Document SUBSCRIBED Kim Alvefur <zash@zash.se> parents: 2390 diff changeset	385
4236 c316ad1087d4 mod_firewall: Some additional documentation improvements, particularly adding section links where needed Matthew Wild <mwild1@gmail.com> parents: 4235 diff changeset	386 Note that this does work, regardless of direction and which [chain](#chain) is
2410 898e70e85185 mod_firewall/README: Document SUBSCRIBED Kim Alvefur <zash@zash.se> parents: 2390 diff changeset	387 used, since both the sender and the recipient will have mirrored roster
898e70e85185 mod_firewall/README: Document SUBSCRIBED Kim Alvefur <zash@zash.se> parents: 2390 diff changeset	388 entries.
898e70e85185 mod_firewall/README: Document SUBSCRIBED Kim Alvefur <zash@zash.se> parents: 2390 diff changeset	389
2390 28fbe960adcf mod_firewall: README: Document conditions for groups and admins Matthew Wild <mwild1@gmail.com> parents: 2389 diff changeset	390 ### Groups
28fbe960adcf mod_firewall: README: Document conditions for groups and admins Matthew Wild <mwild1@gmail.com> parents: 2389 diff changeset	391
28fbe960adcf mod_firewall: README: Document conditions for groups and admins Matthew Wild <mwild1@gmail.com> parents: 2389 diff changeset	392 Using Prosody's mod\_groups it is possible to define groups of users on the server. You can
28fbe960adcf mod_firewall: README: Document conditions for groups and admins Matthew Wild <mwild1@gmail.com> parents: 2389 diff changeset	393 match based on these groups in firewall rules.
28fbe960adcf mod_firewall: README: Document conditions for groups and admins Matthew Wild <mwild1@gmail.com> parents: 2389 diff changeset	394
2594 1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	395 Condition Matches
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	396 ----------------- ----------------------------
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	397 `FROM GROUP` When the stanza is being sent from a member of the named group
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	398 `TO GROUP` When the stanza is being sent to a member of the named group
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	399 `CROSSING GROUPS` When the stanza is being sent between users of different named groups
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	400
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	401 #### CROSSING GROUPS
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	402
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	403 The `CROSSING GROUPS` condition takes a comma-separated list of groups to check. If the
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	404 sender and recipient are not in the same group (only the listed groups are checked), then the
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	405 this condition matches and the stanza is deemed to be crossing between groups.
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	406
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	407 For example, if you had three groups: Engineering, Marketing and Employees. All users are
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	408 members of the 'Employees' group, and the others are for employees of the named department only.
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	409
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	410 To prevent employees in the marketing department from communicating with engineers, you could use
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	411 the following rule:
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	412
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	413 ```
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	414 CROSSING GROUPS: Marketing, Engineering
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	415 BOUNCE=policy-violation (no communication between these groups is allowed!)
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	416 ```
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	417
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	418 This works, even though both the users are in the 'Employees' group, because that group is not listed
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	419 in the condition.
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	420
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition Matthew Wild <mwild1@gmail.com> parents: 2576 diff changeset	421 In the above example, a user who is member of both groups is not restricted.
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	422
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	423 #### SENT DIRECTED PRESENCE TO SENDER
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	424
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	425 This condition matches if the recipient of a stanza has previously sent directed presence to the sender of the stanza. This
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	426 is often done in XMPP to exchange presence information with JIDs that are not on your roster, such as MUC rooms.
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	427
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	428 This condition does not take a parameter - end the condition name with a question mark:
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	429
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	430 # Rule to bounce messages from senders not in the roster who haven't been sent directed presence
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	431 NOT IN ROSTER?
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	432 NOT SENT DIRECTED PRESENCE TO SENDER?
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	433 BOUNCE=service-unavailable
2390 28fbe960adcf mod_firewall: README: Document conditions for groups and admins Matthew Wild <mwild1@gmail.com> parents: 2389 diff changeset	434
28fbe960adcf mod_firewall: README: Document conditions for groups and admins Matthew Wild <mwild1@gmail.com> parents: 2389 diff changeset	435 ### Admins
28fbe960adcf mod_firewall: README: Document conditions for groups and admins Matthew Wild <mwild1@gmail.com> parents: 2389 diff changeset	436
28fbe960adcf mod_firewall: README: Document conditions for groups and admins Matthew Wild <mwild1@gmail.com> parents: 2389 diff changeset	437 Prosody allows certain JIDs to be declared as administrators of a host, component or the whole server.
28fbe960adcf mod_firewall: README: Document conditions for groups and admins Matthew Wild <mwild1@gmail.com> parents: 2389 diff changeset	438
2576 95b79d515a65 mod_firewall: README: Document TO/FROM ADMIN, FORWARD, TO SELF and TO FULL JID Matthew Wild <mwild1@gmail.com> parents: 2559 diff changeset	439 Condition Matches
95b79d515a65 mod_firewall: README: Document TO/FROM ADMIN, FORWARD, TO SELF and TO FULL JID Matthew Wild <mwild1@gmail.com> parents: 2559 diff changeset	440 ---------------- -------------------------------------------------------------------------------------
95b79d515a65 mod_firewall: README: Document TO/FROM ADMIN, FORWARD, TO SELF and TO FULL JID Matthew Wild <mwild1@gmail.com> parents: 2559 diff changeset	441 `TO ADMIN` When the recipient of the stanza is admin of the current host
95b79d515a65 mod_firewall: README: Document TO/FROM ADMIN, FORWARD, TO SELF and TO FULL JID Matthew Wild <mwild1@gmail.com> parents: 2559 diff changeset	442 `FROM ADMIN` When the sender of the stanza is admin of the current host
95b79d515a65 mod_firewall: README: Document TO/FROM ADMIN, FORWARD, TO SELF and TO FULL JID Matthew Wild <mwild1@gmail.com> parents: 2559 diff changeset	443 `FROM ADMIN OF` When the sender of the stanza is an admin of the named host on the current server
95b79d515a65 mod_firewall: README: Document TO/FROM ADMIN, FORWARD, TO SELF and TO FULL JID Matthew Wild <mwild1@gmail.com> parents: 2559 diff changeset	444 `TO ADMIN OF` When the recipient of the stanza is an admin of the named host on the current server
2390 28fbe960adcf mod_firewall: README: Document conditions for groups and admins Matthew Wild <mwild1@gmail.com> parents: 2389 diff changeset	445
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	446 ### Time and date
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	447
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	448 #### TIME
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	449
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	450 Matches stanzas sent during certain time periods.
29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	451
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	452 Condition Matches
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	453 ----------- -------------------------------------------------------------------------------------------
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	454 TIME When the current server local time is within one of the comma-separated time ranges given
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	455
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	456 TIME: 10pm-6am, 14:00-15:00
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	457 REPLY=Zzzz.
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	458
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	459 #### DAY
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	460
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	461 It is also possible to match only on certain days of the week.
29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	462
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	463 Condition Matches
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	464 ----------- -----------------------------------------------------------------------------------------------------
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	465 DAY When the current day matches one, or falls within a rage, in the given comma-separated list of days
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	466
29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	467 Example:
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	468
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	469 DAY: Sat-Sun, Wednesday
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	470 REPLY=Sorry, I'm out enjoying life!
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	471
2102 2c225b4b93d2 mod_firewall: README: Add note about time functions using server's local time Matthew Wild <mwild1@gmail.com> parents: 2096 diff changeset	472 All times and dates are handled in the server's local time.
2c225b4b93d2 mod_firewall: README: Add note about time functions using server's local time Matthew Wild <mwild1@gmail.com> parents: 2096 diff changeset	473
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	474 ### Rate-limiting
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	475
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	476 It is possible to selectively rate-limit stanzas, and use rules to
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	477 decide what to do with stanzas when over the limit.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	478
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	479 First, you must define any rate limits that you are going to use in your
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	480 script. Here we create a limiter called 'normal' that will allow 2
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	481 stanzas per second, and then we define a rule to bounce messages when
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	482 over this limit. Note that the `RATE` definition is not part of a rule
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	483 (multiple rules can share the same limiter).
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	484
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	485 %RATE normal: 2 (burst 3)
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	486
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	487 KIND: message
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	488 LIMIT: normal
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	489 BOUNCE=policy-violation (Sending too fast!)
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	490
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	491 The 'burst' parameter on the rate limit allows you to spread the limit
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	492 check over a given time period. For example the definition shown above
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	493 will allow the limit to be temporarily surpassed, as long as it is
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	494 within the limit after 3 seconds. You will almost always want to specify
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	495 a burst factor.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	496
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	497 Both the rate and the burst can be fractional values. For example a rate
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	498 of 0.1 means only one event is allowed every 10 seconds.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	499
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	500 The LIMIT condition actually does two things; first it counts against
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	501 the given limiter, and then it checks to see if the limiter over its
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	502 limit yet. If it is, the condition matches, otherwise it will not.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	503
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	504 Condition Matches
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	505 ----------- --------------------------------------------------------------------------------------------------
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	506 `LIMIT` When the named limit is 'used up'. Using this condition automatically counts against that limit.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	507
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	508 Note: Reloading mod\_firewall resets the current state of any
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	509 limiters.
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	510
2369 2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	511 #### Dynamic limits
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	512
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	513 Sometimes you may want to have multiple throttles in a single condition, using some property of the session or stanza
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	514 to determine which throttle to use. For example, you might have a limit for incoming stanzas, but you want to limit by
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	515 sending JID, instead of all incoming stanzas sharing the same limit.
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	516
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	517 You can use the 'on' keyword for this, like so:
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	518
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	519 LIMIT: normal on EXPRESSION
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	520
4236 c316ad1087d4 mod_firewall: Some additional documentation improvements, particularly adding section links where needed Matthew Wild <mwild1@gmail.com> parents: 4235 diff changeset	521 For more information on [expressions](#expressions), see the section later in this document.
2369 2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	522
2370 5fe483b73fd2 mod_firewall: Rate limiting: Document 'entries' and add option to allow overflowing when full Matthew Wild <mwild1@gmail.com> parents: 2369 diff changeset	523 Each value of 'EXPRESSION' has to be tracked individually in a table, which uses a small amount of memory. To prevent
5fe483b73fd2 mod_firewall: Rate limiting: Document 'entries' and add option to allow overflowing when full Matthew Wild <mwild1@gmail.com> parents: 2369 diff changeset	524 memory exhaustion, the number of tracked values is limited to 1000 by default. You can override this by setting the
5fe483b73fd2 mod_firewall: Rate limiting: Document 'entries' and add option to allow overflowing when full Matthew Wild <mwild1@gmail.com> parents: 2369 diff changeset	525 maximum number of table entries when you define the rate:
5fe483b73fd2 mod_firewall: Rate limiting: Document 'entries' and add option to allow overflowing when full Matthew Wild <mwild1@gmail.com> parents: 2369 diff changeset	526
5fe483b73fd2 mod_firewall: Rate limiting: Document 'entries' and add option to allow overflowing when full Matthew Wild <mwild1@gmail.com> parents: 2369 diff changeset	527 %RATE normal: 2 (burst 3) (entries 4096)
5fe483b73fd2 mod_firewall: Rate limiting: Document 'entries' and add option to allow overflowing when full Matthew Wild <mwild1@gmail.com> parents: 2369 diff changeset	528
5fe483b73fd2 mod_firewall: Rate limiting: Document 'entries' and add option to allow overflowing when full Matthew Wild <mwild1@gmail.com> parents: 2369 diff changeset	529 Old values are automatically removed from the tracking table. However if the tracking table becomes full, new entries
5fe483b73fd2 mod_firewall: Rate limiting: Document 'entries' and add option to allow overflowing when full Matthew Wild <mwild1@gmail.com> parents: 2369 diff changeset	530 will be rejected - it will behave as if the rate limit was reached, even for values that have not been seen before. Since
5fe483b73fd2 mod_firewall: Rate limiting: Document 'entries' and add option to allow overflowing when full Matthew Wild <mwild1@gmail.com> parents: 2369 diff changeset	531 this opens up a potential denial of service (innocent users may be affected if malicious users can fill up the tracking
5fe483b73fd2 mod_firewall: Rate limiting: Document 'entries' and add option to allow overflowing when full Matthew Wild <mwild1@gmail.com> parents: 2369 diff changeset	532 table within the limit period). You can choose to instead "fail open", and allow the rate limit to be temporarily bypassed
5fe483b73fd2 mod_firewall: Rate limiting: Document 'entries' and add option to allow overflowing when full Matthew Wild <mwild1@gmail.com> parents: 2369 diff changeset	533 when the table is full. To choose this behaviour, add `(allow overflow)` to the RATE definition.
5fe483b73fd2 mod_firewall: Rate limiting: Document 'entries' and add option to allow overflowing when full Matthew Wild <mwild1@gmail.com> parents: 2369 diff changeset	534
2108 573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	535 ### Session marking
573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	536
573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	537 It is possible to 'mark' sessions (see the MARK_ORIGIN action below). To match stanzas from marked sessions, use the
573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	538 `ORIGIN_MARKED` condition.
573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	539
573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	540 Condition Description
573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	541 ------------------------------- ---------------------------------------------------------------
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	542 ORIGIN MARKED: markname Matches if the origin has been marked with 'markname'.
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	543 ORIGIN MARKED: markname (Xs) Matches if the origin has been marked with 'markname' within the past X seconds.
2108 573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	544
573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	545 Example usage:
573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	546
573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	547 # This rule drops messages from sessions that have been marked as spammers in the past hour
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	548 ORIGIN MARKED: spammer (3600s)
2108 573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	549 DROP.
573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	550
573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	551 # This rule marks the origin session as a spammer if they send a message to a honeypot JID
573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	552 KIND: message
573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	553 TO: honeypot@example.com
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	554 MARK ORIGIN=spammer
2108 573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	555
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	556 Actions
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	557 -------
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	558
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	559 Actions come after all conditions in a rule block. There must be at
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	560 least one action, though conditions are optional.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	561
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	562 An action without parameters ends with a full-stop/period ('.'), and one
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	563 with parameters uses an equals sign ('='):
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	564
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	565 # An action with no parameters:
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	566 DROP.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	567
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	568 # An action with a parameter:
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	569 REPLY=Hello, this is a reply.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	570
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	571 ### Route modification
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	572
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	573 The most common actions modify the stanza's route in some way. Currently
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	574 the first matching rule to do so will halt further processing of actions
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	575 and rules (this may change in the future).
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	576
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	577 Action Description
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	578 ----------------------- ---------------------------------------------------------------------------------------------------------------------------------------------------------
2559 99b32f77f00d mod_firewall: Document PASS, RETURN and DEFAULT Matthew Wild <mwild1@gmail.com> parents: 2545 diff changeset	579 `PASS.` Stop executing actions and rules on this stanza, and let it through this chain and any calling chains.
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	580 `DROP.` Stop executing actions and rules on this stanza, and discard it.
2559 99b32f77f00d mod_firewall: Document PASS, RETURN and DEFAULT Matthew Wild <mwild1@gmail.com> parents: 2545 diff changeset	581 `DEFAULT.` Stop executing actions and rules on this stanza, prevent any other scripts/modules from handling it, to trigger the appropriate default "unhandled stanza" behaviour. Do not use in custom chains (it is treated as PASS).
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	582 `REDIRECT=jid` Redirect the stanza to the given JID.
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	583 `REPLY=text` Reply to the stanza (assumed to be a message) with the given text.
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	584 `BOUNCE.` Bounce the stanza with the default error (usually service-unavailable)
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	585 `BOUNCE=error` Bounce the stanza with the given error (MUST be a defined XMPP stanza error, see [RFC6120](http://xmpp.org/rfcs/rfc6120.html#stanzas-error-conditions).
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	586 `BOUNCE=error (text)` As above, but include the supplied human-readable text with a description of the error
2092 f5d78bc016a6 mod_firewall: README: Add warning about COPY action's ability to cause loops (thanks Ge0rG) Matthew Wild <mwild1@gmail.com> parents: 2047 diff changeset	587 `COPY=jid` Make a copy of the stanza and send the copy to the specified JID. The copied stanza flows through Prosody's routing code, and as such is affected by firewall rules. Be careful to avoid loops.
2576 95b79d515a65 mod_firewall: README: Document TO/FROM ADMIN, FORWARD, TO SELF and TO FULL JID Matthew Wild <mwild1@gmail.com> parents: 2559 diff changeset	588 `FORWARD=jid` Forward a copy of the stanza to the given JID (using XEP-0297). The stanza will be sent from the current host's JID.
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	589
2095 3b4a6d255d7a mod_firewall: README: Add note about BOUNCE and error stanzas/iq results Matthew Wild <mwild1@gmail.com> parents: 2093 diff changeset	590 Note: It is incorrect behaviour to reply to an 'error' stanza with another error, so BOUNCE will simply act the same as 'DROP' for stanzas that should not be bounced (error stanzas and iq results).
3b4a6d255d7a mod_firewall: README: Add note about BOUNCE and error stanzas/iq results Matthew Wild <mwild1@gmail.com> parents: 2093 diff changeset	591
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	592 ### Stanza modification
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	593
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	594 These actions make it possible to modify the content and structure of a
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	595 stanza.
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	596
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	597 Action Description
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	598 ------------------------ ------------------------------------------------------------------------
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	599 `STRIP=name` Remove any child elements with the given name in the default namespace
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	600 `STRIP=name namespace` Remove any child elements with the given name and the given namespace
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	601 `INJECT=xml` Inject the given XML into the stanza as a child element
1782 29f3d6b7ad16 Import wiki pages Kim Alvefur <zash@zash.se> parents: diff changeset	602
2108 573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	603 ### Sessions
573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	604
573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	605 It is possible to mark sessions, and then use these marks to match rules later on.
573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	606
573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	607 Action Description
573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	608 ------------------------ --------------------------------------------------------------------------
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	609 `MARK ORIGIN=mark` Marks the originating session with the given flag.
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	610 `UNMARK ORIGIN=mark` Removes the given mark from the origin session (if it is set).
2108 573fe9825fba mod_firewall: README: Document session marking Matthew Wild <mwild1@gmail.com> parents: 2105 diff changeset	611
2114 ce3dd93f30d9 mod_firewall: README: Note about marks applying to sessions, not JIDs Matthew Wild <mwild1@gmail.com> parents: 2111 diff changeset	612 Note: Marks apply to sessions, not JIDs. E.g. if marking in a rule that matches a stanza received
ce3dd93f30d9 mod_firewall: README: Note about marks applying to sessions, not JIDs Matthew Wild <mwild1@gmail.com> parents: 2111 diff changeset	613 over s2s, it is the s2s session that is marked.
ce3dd93f30d9 mod_firewall: README: Note about marks applying to sessions, not JIDs Matthew Wild <mwild1@gmail.com> parents: 2111 diff changeset	614
ce3dd93f30d9 mod_firewall: README: Note about marks applying to sessions, not JIDs Matthew Wild <mwild1@gmail.com> parents: 2111 diff changeset	615 It is possible to have multiple marks on an origin at any given time.
ce3dd93f30d9 mod_firewall: README: Note about marks applying to sessions, not JIDs Matthew Wild <mwild1@gmail.com> parents: 2111 diff changeset	616
1803 4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	617 ### Informational
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	618
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	619 Action Description
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	620 --------------- ------------------------------------------------------------------------------------------------------------------------
4d73a1a6ba68 Convert all wiki pages to Markdown Kim Alvefur <zash@zash.se> parents: 1782 diff changeset	621 `LOG=message` Logs the given message to Prosody's log file. Optionally prefix it with a log level in square brackets, e.g. `[debug]`
2093 7b9520479e99 mod_firewall: README: Document LOG's ability to take meta expressions Matthew Wild <mwild1@gmail.com> parents: 2092 diff changeset	622
4236 c316ad1087d4 mod_firewall: Some additional documentation improvements, particularly adding section links where needed Matthew Wild <mwild1@gmail.com> parents: 4235 diff changeset	623 You can include [expressions](#expressions) in log messages, using `$(...)` syntax. For example, to log the stanza that matched the rule,
c316ad1087d4 mod_firewall: Some additional documentation improvements, particularly adding section links where needed Matthew Wild <mwild1@gmail.com> parents: 4235 diff changeset	624 you can use `$(stanza)`, or to log just the top tag of the stanza, use `$(stanza:top_tag())`. To fetch the sender JID, use `$(stanza.attr.from)`.
2093 7b9520479e99 mod_firewall: README: Document LOG's ability to take meta expressions Matthew Wild <mwild1@gmail.com> parents: 2092 diff changeset	625
7b9520479e99 mod_firewall: README: Document LOG's ability to take meta expressions Matthew Wild <mwild1@gmail.com> parents: 2092 diff changeset	626 Example:
7b9520479e99 mod_firewall: README: Document LOG's ability to take meta expressions Matthew Wild <mwild1@gmail.com> parents: 2092 diff changeset	627
7b9520479e99 mod_firewall: README: Document LOG's ability to take meta expressions Matthew Wild <mwild1@gmail.com> parents: 2092 diff changeset	628 # Log all stanzas to user@example.com:
7b9520479e99 mod_firewall: README: Document LOG's ability to take meta expressions Matthew Wild <mwild1@gmail.com> parents: 2092 diff changeset	629 TO: user@example.com
7b9520479e99 mod_firewall: README: Document LOG's ability to take meta expressions Matthew Wild <mwild1@gmail.com> parents: 2092 diff changeset	630 LOG=[debug] User received: $(stanza)
7b9520479e99 mod_firewall: README: Document LOG's ability to take meta expressions Matthew Wild <mwild1@gmail.com> parents: 2092 diff changeset	631
2369 2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	632 More info about expressions can be found below.
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	633
2096 b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	634 Chains
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	635 ------
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	636
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	637 Rules are grouped into "chains", which are injected at particular points in Prosody's routing code.
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	638
2559 99b32f77f00d mod_firewall: Document PASS, RETURN and DEFAULT Matthew Wild <mwild1@gmail.com> parents: 2545 diff changeset	639 Available built-in chains are:
2096 b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	640
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	641 Chain Description
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	642 -------------- -------------------------------------------------------------------------------------------
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	643 deliver Applies to stanzas delivered to local recipients (regardless of the stanza's origin)
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	644 deliver_remote Applies to stanzas delivered to remote recipients (just before they leave the local server)
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	645 preroute Applies to incoming stanzas from local users, before any routing rules are applied
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	646
2111 4e434abaf8fc mod_firewall: README: Improve chain documentation Matthew Wild <mwild1@gmail.com> parents: 2110 diff changeset	647 A chain is begun by a line `::name` where 'name' is the name of the chain you want the following rules to be
4e434abaf8fc mod_firewall: README: Improve chain documentation Matthew Wild <mwild1@gmail.com> parents: 2110 diff changeset	648 inserted into. If no chain is specified, rules are put into the 'deliver' chain.
4e434abaf8fc mod_firewall: README: Improve chain documentation Matthew Wild <mwild1@gmail.com> parents: 2110 diff changeset	649
4e434abaf8fc mod_firewall: README: Improve chain documentation Matthew Wild <mwild1@gmail.com> parents: 2110 diff changeset	650 It is possible to create custom chains (useful with the JUMP_CHAIN action described below). User-created
4e434abaf8fc mod_firewall: README: Improve chain documentation Matthew Wild <mwild1@gmail.com> parents: 2110 diff changeset	651 chains must begin with "user/", e.g. "user/spam_filtering".
2096 b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	652
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	653 Example of chain use:
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	654
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	655 # example.com's firewall script
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	656
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	657 # This line is optional, because 'deliver' is the default chain anyway:
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	658 ::deliver
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	659
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	660 # This rule matches any stanzas delivered to our local user bob:
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	661 TO: bob@example.com
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	662 DROP.
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	663
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	664 # Oops! This rule will never match, because alice is not a local user,
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	665 # and only stanzas to local users go through the 'deliver' chain:
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	666 TO: alice@remote.example.com
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	667 DROP.
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	668
2104 384fb28452b9 mod_firewall: README: Improve chain usage example comments Matthew Wild <mwild1@gmail.com> parents: 2103 diff changeset	669 # Create a 'preroute' chain of rules (matched for incoming stanzas from local clients):
2096 b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	670 ::preroute
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	671 # These rules are matched for outgoing stanzas from local clients
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	672
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	673 # This will match any stanzas sent to alice from a local user:
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	674 TO: alice@remote.example.com
b75d29a162cd mod_firewall: README: Document chains Matthew Wild <mwild1@gmail.com> parents: 2095 diff changeset	675 DROP.
2105 f2d5aa789646 mod_firewall: README: Document JUMP_CHAIN Matthew Wild <mwild1@gmail.com> parents: 2104 diff changeset	676
f2d5aa789646 mod_firewall: README: Document JUMP_CHAIN Matthew Wild <mwild1@gmail.com> parents: 2104 diff changeset	677 Action Description
f2d5aa789646 mod_firewall: README: Document JUMP_CHAIN Matthew Wild <mwild1@gmail.com> parents: 2104 diff changeset	678 ------------------------ ------------------------------------------------------------------------
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	679 `JUMP CHAIN=name` Switches chains, and passes the stanza through the rules in chain 'name'. If the new chain causes the stanza to be dropped/redirected, the current chain halts further processing.
2559 99b32f77f00d mod_firewall: Document PASS, RETURN and DEFAULT Matthew Wild <mwild1@gmail.com> parents: 2545 diff changeset	680 `RETURN.` Stops executing the current chain and returns to the parent chain. For built-in chains, equivalent to PASS. RETURN is implicit at the end of every chain.
2369 2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	681
2389 a753b21968c5 mod_firewall: README: Clarify that it's possible to jump to chains defined outside of the current file Matthew Wild <mwild1@gmail.com> parents: 2388 diff changeset	682 It is possible to jump to chains defined by other scripts and modules.
a753b21968c5 mod_firewall: README: Clarify that it's possible to jump to chains defined outside of the current file Matthew Wild <mwild1@gmail.com> parents: 2388 diff changeset	683
2369 2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	684 Expressions
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	685 -----------
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	686
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	687 Some conditions and actions in rules support "expressions" in their parameters (their documentation will indicate if this is the case). Most parameters
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	688 are static once the firewall script is loaded and compiled internally, however parameters that allow expressions can be dynamically calculated when a
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	689 rule is being run.
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	690
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	691 There are two kinds of expression that you can use: stanza expressions, and code expressions.
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	692
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	693 ### Stanza expressions
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	694
2369 2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	695 Stanza expressions are of the form `$<...>`, where `...` is a stanza path. For syntax of stanza paths, see the documentation for the 'INSPECT' condition
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	696 above.
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	697
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	698 Example:
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	699
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	700 LOG=Matched a stanza from $<@from> to $<@to>
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	701
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	702 There are built in functions which can be applied to the output of a stanza expression, by appending the pipe ('\|') operator, followed by the function
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	703 name. These functions are:
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	704
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	705 Function Description
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	706 ------------ ---------------------------------------
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	707 bare Given a JID, strip any resource
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	708 node Return the node ('user part') of a JID
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	709 host Return the host ('domain') part of a JID
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	710 resource Return the resource part of a JID
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	711
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	712 For example, to apply a rate limit to stanzas per sender domain:
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	713
4072 2dcbc01c9931 mod_firewall: Fix example in README to use \|host (thanks DebXWoody) Matthew Wild <mwild1@gmail.com> parents: 3197 diff changeset	714 LIMIT normal on $<@from\|host>
2540 d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	715
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	716 If the path does not match (e.g. the element isn't found, or the attribute doesn't exist) or any of the functions fail to produce an output (e.g. an invalid
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	717 JID was passed to a function that only handles valid JIDs) the expression will return the text `<undefined>`. You can override this by ending the expression
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	718 with a double pipe ('\|\|') followed by a quoted string to use as a default instead. E.g. to default to the string "normal" when there is no 'type' attribute:
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	719
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	720 LOG=Stanza type is $<@type\|\|"normal">
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	721
d637bc0ac604 mod_firewall: Update README for latest changes Matthew Wild <mwild1@gmail.com> parents: 2410 diff changeset	722 ### Code expressions
2369 2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	723
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	724 Code expressions use `$(...)` syntax. Code expressions are powerful, and allow unconstrained access to Prosody's internal environment. Therefore
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	725 code expressions are typically for advanced use-cases only. You may want to refer to Prosody's [developer documentation](https://prosody.im/doc/developers)
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	726 for more information. In particular, within code expressions you may access the 'session' object, which is the session object of the origin of the stanza,
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	727 and the 'stanza' object, which is the stanza being considered within the current rule. Whatever value the expression returns will be converted to a string.
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	728
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	729 Example to limit stanzas per session type:
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	730
2fb11d34087e mod_firewall: README: Update for LIMIT 'on' and document expression syntax Matthew Wild <mwild1@gmail.com> parents: 2360 diff changeset	731 LIMIT: normal on $(session.type)

Mercurial > prosody-modules

annotate mod_firewall/README.markdown @ 4451:f1a63271dcfc