annotate mod_firewall/README.markdown @ 4253:32b4901a9d8d

mod_muc_inject_mentions: Add new setting to trigger mentions only if a prefix is found
author Seve Ferrer <seve@delape.net>
date Tue, 17 Nov 2020 13:45:33 +0100
parents c316ad1087d4
children bb8459c220c9
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1803
4d73a1a6ba68 Convert all wiki pages to Markdown
Kim Alvefur <zash@zash.se>
parents: 1782
diff changeset
1 ---
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 ------------------------------------------------------------------------
1782
29f3d6b7ad16 Import wiki pages
Kim Alvefur <zash@zash.se>
parents:
diff changeset
16
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)