annotate mod_firewall/conditions.lib.lua @ 4838:fd2e48d4ac94

mod_bookmarks2: Advertise XEP-0049 support In the case mod_private isn’t loaded, some clients (like poezio) won’t even attempt to use Private XML Storage unless this feature is advertised. This is on the domain JID and not on the account JID!
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Sun, 26 Dec 2021 14:51:35 +0100
parents 4e8fa75cc678
children 84997bc3f92e
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1 --luacheck: globals meta idsafe
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2 local condition_handlers = {};
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3
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4 local jid = require "util.jid";
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5 local unpack = table.unpack or unpack;
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6
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7 -- Helper to convert user-input strings (yes/true//no/false) to a bool
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8 local function string_to_boolean(s)
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9 s = s:lower();
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10 return s == "yes" or s == "true";
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11 end
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12
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13 -- Return a code string for a condition that checks whether the contents
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14 -- of variable with the name 'name' matches any of the values in the
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15 -- comma/space/pipe delimited list 'values'.
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16 local function compile_comparison_list(name, values)
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17 local conditions = {};
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18 for value in values:gmatch("[^%s,|]+") do
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19 table.insert(conditions, ("%s == %q"):format(name, value));
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20 end
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21 return table.concat(conditions, " or ");
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22 end
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23
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24 function condition_handlers.KIND(kind)
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25 assert(kind, "Expected stanza kind to match against");
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26 return compile_comparison_list("name", kind), { "name" };
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27 end
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29 local wildcard_equivs = { ["*"] = ".*", ["?"] = "." };
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30
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31 local function compile_jid_match_part(part, match)
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32 if not match then
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33 return part.." == nil";
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34 end
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35 local pattern = match:match("^<(.*)>$");
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36 if pattern then
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37 if pattern == "*" then
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38 return part;
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39 end
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40 if pattern:find("^<.*>$") then
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41 pattern = pattern:match("^<(.*)>$");
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42 else
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43 pattern = pattern:gsub("%p", "%%%0"):gsub("%%(%p)", wildcard_equivs);
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44 end
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45 return ("(%s and %s:find(%q))"):format(part, part, "^"..pattern.."$");
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46 else
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47 return ("%s == %q"):format(part, match);
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48 end
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49 end
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50
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51 local function compile_jid_match(which, match_jid)
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52 local match_node, match_host, match_resource = jid.split(match_jid);
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53 local conditions = {};
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54 conditions[#conditions+1] = compile_jid_match_part(which.."_node", match_node);
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55 conditions[#conditions+1] = compile_jid_match_part(which.."_host", match_host);
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56 if match_resource then
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57 conditions[#conditions+1] = compile_jid_match_part(which.."_resource", match_resource);
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58 end
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59 return table.concat(conditions, " and ");
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60 end
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61
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62 function condition_handlers.TO(to)
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63 return compile_jid_match("to", to), { "split_to" };
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64 end
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65
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66 function condition_handlers.FROM(from)
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67 return compile_jid_match("from", from), { "split_from" };
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68 end
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69
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70 function condition_handlers.FROM_EXACTLY(from)
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71 local metadeps = {};
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72 return ("from == %s"):format(metaq(from, metadeps)), { "from", unpack(metadeps) };
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73 end
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74
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75 function condition_handlers.TO_EXACTLY(to)
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76 local metadeps = {};
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77 return ("to == %s"):format(metaq(to, metadeps)), { "to", unpack(metadeps) };
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78 end
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79
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80 function condition_handlers.TO_SELF()
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81 -- Intentionally not using 'to' here, as that defaults to bare JID when nil
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82 return ("stanza.attr.to == nil");
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83 end
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84
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85 function condition_handlers.TYPE(type)
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86 assert(type, "Expected 'type' value to match against");
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87 return compile_comparison_list("(type or (name == 'message' and 'normal') or (name == 'presence' and 'available'))", type), { "type", "name" };
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88 end
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90 local function zone_check(zone, which)
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91 local zone_var = zone;
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92 if zone == "$local" then zone_var = "_local" end
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93 local which_not = which == "from" and "to" or "from";
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94 return ("(zone_%s[%s_host] or zone_%s[%s] or zone_%s[bare_%s]) "
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95 .."and not(zone_%s[%s_host] or zone_%s[%s] or zone_%s[bare_%s])"
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96 )
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97 :format(zone_var, which, zone_var, which, zone_var, which,
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98 zone_var, which_not, zone_var, which_not, zone_var, which_not), {
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99 "split_to", "split_from", "bare_to", "bare_from", "zone:"..zone
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100 };
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101 end
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102
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103 function condition_handlers.ENTERING(zone)
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104 return zone_check(zone, "to");
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105 end
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106
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107 function condition_handlers.LEAVING(zone)
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108 return zone_check(zone, "from");
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109 end
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110
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111 -- IN ROSTER? (parameter is deprecated)
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112 function condition_handlers.IN_ROSTER(yes_no)
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113 local in_roster_requirement = string_to_boolean(yes_no or "yes"); -- COMPAT w/ older scripts
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parents: 2128
diff changeset
114 return "not "..(in_roster_requirement and "not" or "").." roster_entry", { "roster_entry" };
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: 2128
diff changeset
115 end
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: 2128
diff changeset
116
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: 2128
diff changeset
117 function condition_handlers.IN_ROSTER_GROUP(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: 2128
diff changeset
118 return ("not not (roster_entry and roster_entry.groups[%q])"):format(group), { "roster_entry" };
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: 2128
diff changeset
119 end
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: 2128
diff changeset
120
2403
f96bdfd81eba mod_firewall: SUBSCRIBED - condition that is true if the receiver of a stanza is subscribed to the sender
Kim Alvefur <zash@zash.se>
parents: 2386
diff changeset
121 function condition_handlers.SUBSCRIBED()
2857
ff1666716d10 mod_firewall: Make SUBSCRIBED match for stanzas sent to self (fixes #1052)
Kim Alvefur <zash@zash.se>
parents: 2618
diff changeset
122 return "(bare_to == bare_from or to_node and rostermanager.is_contact_subscribed(to_node, to_host, bare_from))",
ff1666716d10 mod_firewall: Make SUBSCRIBED match for stanzas sent to self (fixes #1052)
Kim Alvefur <zash@zash.se>
parents: 2618
diff changeset
123 { "rostermanager", "split_to", "bare_to", "bare_from" };
2403
f96bdfd81eba mod_firewall: SUBSCRIBED - condition that is true if the receiver of a stanza is subscribed to the sender
Kim Alvefur <zash@zash.se>
parents: 2386
diff changeset
124 end
f96bdfd81eba mod_firewall: SUBSCRIBED - condition that is true if the receiver of a stanza is subscribed to the sender
Kim Alvefur <zash@zash.se>
parents: 2386
diff changeset
125
2916
b1cdcbcd1c90 mod_firewall: Add PENDING SUBSCRIPTION FROM SENDER? condition
Matthew Wild <mwild1@gmail.com>
parents: 2894
diff changeset
126 function condition_handlers.PENDING_SUBSCRIPTION_FROM_SENDER()
b1cdcbcd1c90 mod_firewall: Add PENDING SUBSCRIPTION FROM SENDER? condition
Matthew Wild <mwild1@gmail.com>
parents: 2894
diff changeset
127 return "(bare_to == bare_from or to_node and rostermanager.is_contact_pending_in(to_node, to_host, bare_from))",
3982
ab065ff4628b mod_firewall: Remove trailing whitespace
Kim Alvefur <zash@zash.se>
parents: 3973
diff changeset
128 { "rostermanager", "split_to", "bare_to", "bare_from" };
2916
b1cdcbcd1c90 mod_firewall: Add PENDING SUBSCRIPTION FROM SENDER? condition
Matthew Wild <mwild1@gmail.com>
parents: 2894
diff changeset
129 end
b1cdcbcd1c90 mod_firewall: Add PENDING SUBSCRIPTION FROM SENDER? condition
Matthew Wild <mwild1@gmail.com>
parents: 2894
diff changeset
130
947
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
131 function condition_handlers.PAYLOAD(payload_ns)
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
132 return ("stanza:get_child(nil, %q)"):format(payload_ns);
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
133 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
134
954
bec5b6e2eab8 mod_firewall: Add INSPECT conditional, for deeper inspection of stanzas
Kim Alvefur <zash@zash.se>
parents: 947
diff changeset
135 function condition_handlers.INSPECT(path)
bec5b6e2eab8 mod_firewall: Add INSPECT conditional, for deeper inspection of stanzas
Kim Alvefur <zash@zash.se>
parents: 947
diff changeset
136 if path:find("=") then
2386
00eed68f63bf mod_firewall: INSPECT: support for literal substring search and expressions
Matthew Wild <mwild1@gmail.com>
parents: 2363
diff changeset
137 local query, match_type, value = path:match("(.-)([~/$]*)=(.*)");
2362
c065ab67d807 mod_firewall: INSPECT: Emit compilation error when the given stanza path is used for comparison but doesn't return a string
Matthew Wild <mwild1@gmail.com>
parents: 2342
diff changeset
138 if not(query:match("#$") or query:match("@[^/]+")) then
c065ab67d807 mod_firewall: INSPECT: Emit compilation error when the given stanza path is used for comparison but doesn't return a string
Matthew Wild <mwild1@gmail.com>
parents: 2342
diff changeset
139 error("Stanza path does not return a string (append # for text content or @name for value of named attribute)", 0);
c065ab67d807 mod_firewall: INSPECT: Emit compilation error when the given stanza path is used for comparison but doesn't return a string
Matthew Wild <mwild1@gmail.com>
parents: 2342
diff changeset
140 end
2519
d4bc434a60a4 mod_firewall: Update functions that use meta() to allow functions with deps inside expressions
Matthew Wild <mwild1@gmail.com>
parents: 2465
diff changeset
141 local meta_deps = {};
2386
00eed68f63bf mod_firewall: INSPECT: support for literal substring search and expressions
Matthew Wild <mwild1@gmail.com>
parents: 2363
diff changeset
142 local quoted_value = ("%q"):format(value);
00eed68f63bf mod_firewall: INSPECT: support for literal substring search and expressions
Matthew Wild <mwild1@gmail.com>
parents: 2363
diff changeset
143 if match_type:find("$", 1, true) then
00eed68f63bf mod_firewall: INSPECT: support for literal substring search and expressions
Matthew Wild <mwild1@gmail.com>
parents: 2363
diff changeset
144 match_type = match_type:gsub("%$", "");
2519
d4bc434a60a4 mod_firewall: Update functions that use meta() to allow functions with deps inside expressions
Matthew Wild <mwild1@gmail.com>
parents: 2465
diff changeset
145 quoted_value = meta(quoted_value, meta_deps);
2386
00eed68f63bf mod_firewall: INSPECT: support for literal substring search and expressions
Matthew Wild <mwild1@gmail.com>
parents: 2363
diff changeset
146 end
00eed68f63bf mod_firewall: INSPECT: support for literal substring search and expressions
Matthew Wild <mwild1@gmail.com>
parents: 2363
diff changeset
147 if match_type == "~" then -- Lua pattern match
2519
d4bc434a60a4 mod_firewall: Update functions that use meta() to allow functions with deps inside expressions
Matthew Wild <mwild1@gmail.com>
parents: 2465
diff changeset
148 return ("(stanza:find(%q) or ''):match(%s)"):format(query, quoted_value), meta_deps;
2386
00eed68f63bf mod_firewall: INSPECT: support for literal substring search and expressions
Matthew Wild <mwild1@gmail.com>
parents: 2363
diff changeset
149 elseif match_type == "/" then -- find literal substring
2519
d4bc434a60a4 mod_firewall: Update functions that use meta() to allow functions with deps inside expressions
Matthew Wild <mwild1@gmail.com>
parents: 2465
diff changeset
150 return ("(stanza:find(%q) or ''):find(%s, 1, true)"):format(query, quoted_value), meta_deps;
2386
00eed68f63bf mod_firewall: INSPECT: support for literal substring search and expressions
Matthew Wild <mwild1@gmail.com>
parents: 2363
diff changeset
151 elseif match_type == "" then -- exact match
2519
d4bc434a60a4 mod_firewall: Update functions that use meta() to allow functions with deps inside expressions
Matthew Wild <mwild1@gmail.com>
parents: 2465
diff changeset
152 return ("stanza:find(%q) == %s"):format(query, quoted_value), meta_deps;
2109
9db4113d0cb5 mod_firewall: INSPECT: Support for pattern matches (confusingly using ~= instead of =)
Matthew Wild <mwild1@gmail.com>
parents: 2107
diff changeset
153 else
2386
00eed68f63bf mod_firewall: INSPECT: support for literal substring search and expressions
Matthew Wild <mwild1@gmail.com>
parents: 2363
diff changeset
154 error("Unrecognised comparison '"..match_type.."='", 0);
2109
9db4113d0cb5 mod_firewall: INSPECT: Support for pattern matches (confusingly using ~= instead of =)
Matthew Wild <mwild1@gmail.com>
parents: 2107
diff changeset
155 end
954
bec5b6e2eab8 mod_firewall: Add INSPECT conditional, for deeper inspection of stanzas
Kim Alvefur <zash@zash.se>
parents: 947
diff changeset
156 end
bec5b6e2eab8 mod_firewall: Add INSPECT conditional, for deeper inspection of stanzas
Kim Alvefur <zash@zash.se>
parents: 947
diff changeset
157 return ("stanza:find(%q)"):format(path);
bec5b6e2eab8 mod_firewall: Add INSPECT conditional, for deeper inspection of stanzas
Kim Alvefur <zash@zash.se>
parents: 947
diff changeset
158 end
bec5b6e2eab8 mod_firewall: Add INSPECT conditional, for deeper inspection of stanzas
Kim Alvefur <zash@zash.se>
parents: 947
diff changeset
159
947
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
160 function condition_handlers.FROM_GROUP(group_name)
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
161 return ("group_contains(%q, bare_from)"):format(group_name), { "group_contains", "bare_from" };
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
162 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
163
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
164 function condition_handlers.TO_GROUP(group_name)
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
165 return ("group_contains(%q, bare_to)"):format(group_name), { "group_contains", "bare_to" };
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
166 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
167
2594
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition
Matthew Wild <mwild1@gmail.com>
parents: 2584
diff changeset
168 function condition_handlers.CROSSING_GROUPS(group_names)
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition
Matthew Wild <mwild1@gmail.com>
parents: 2584
diff changeset
169 local code = {};
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition
Matthew Wild <mwild1@gmail.com>
parents: 2584
diff changeset
170 for group_name in group_names:gmatch("([^, ][^,]+)") do
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition
Matthew Wild <mwild1@gmail.com>
parents: 2584
diff changeset
171 group_name = group_name:match("^%s*(.-)%s*$"); -- Trim leading/trailing whitespace
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition
Matthew Wild <mwild1@gmail.com>
parents: 2584
diff changeset
172 -- Just check that's it is crossing from outside group to inside group
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition
Matthew Wild <mwild1@gmail.com>
parents: 2584
diff changeset
173 table.insert(code, ("(group_contains(%q, bare_to) and group_contains(%q, bare_from))"):format(group_name, group_name))
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition
Matthew Wild <mwild1@gmail.com>
parents: 2584
diff changeset
174 end
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition
Matthew Wild <mwild1@gmail.com>
parents: 2584
diff changeset
175 return "not "..table.concat(code, " or "), { "group_contains", "bare_to", "bare_from" };
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition
Matthew Wild <mwild1@gmail.com>
parents: 2584
diff changeset
176 end
1e1c929c1aa5 mod_firewall: Add and document CROSSING GROUPS condition
Matthew Wild <mwild1@gmail.com>
parents: 2584
diff changeset
177
947
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
178 function condition_handlers.FROM_ADMIN_OF(host)
2577
00cef058df8d mod_firewall: TO/FROM ADMIN OF: Fix string quoting
Matthew Wild <mwild1@gmail.com>
parents: 2575
diff changeset
179 return ("is_admin(bare_from, %s)"):format(host ~= "*" and metaq(host) or nil), { "is_admin", "bare_from" };
947
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
180 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
181
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
182 function condition_handlers.TO_ADMIN_OF(host)
2577
00cef058df8d mod_firewall: TO/FROM ADMIN OF: Fix string quoting
Matthew Wild <mwild1@gmail.com>
parents: 2575
diff changeset
183 return ("is_admin(bare_to, %s)"):format(host ~= "*" and metaq(host) or nil), { "is_admin", "bare_to" };
947
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
184 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
185
2553
7ed2a66bfabd mod_firewall: Add TO/FROM ADMIN
Matthew Wild <mwild1@gmail.com>
parents: 2552
diff changeset
186 function condition_handlers.FROM_ADMIN()
2575
214b49d05ea1 mod_firewall: Fix TO/FROM ADMIN to use current (module) host
Matthew Wild <mwild1@gmail.com>
parents: 2564
diff changeset
187 return ("is_admin(bare_from, current_host)"), { "is_admin", "bare_from", "current_host" };
2553
7ed2a66bfabd mod_firewall: Add TO/FROM ADMIN
Matthew Wild <mwild1@gmail.com>
parents: 2552
diff changeset
188 end
7ed2a66bfabd mod_firewall: Add TO/FROM ADMIN
Matthew Wild <mwild1@gmail.com>
parents: 2552
diff changeset
189
7ed2a66bfabd mod_firewall: Add TO/FROM ADMIN
Matthew Wild <mwild1@gmail.com>
parents: 2552
diff changeset
190 function condition_handlers.TO_ADMIN()
2575
214b49d05ea1 mod_firewall: Fix TO/FROM ADMIN to use current (module) host
Matthew Wild <mwild1@gmail.com>
parents: 2564
diff changeset
191 return ("is_admin(bare_to, current_host)"), { "is_admin", "bare_to", "current_host" };
2553
7ed2a66bfabd mod_firewall: Add TO/FROM ADMIN
Matthew Wild <mwild1@gmail.com>
parents: 2552
diff changeset
192 end
7ed2a66bfabd mod_firewall: Add TO/FROM ADMIN
Matthew Wild <mwild1@gmail.com>
parents: 2552
diff changeset
193
968
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
194 local day_numbers = { sun = 0, mon = 2, tue = 3, wed = 4, thu = 5, fri = 6, sat = 7 };
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
195
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
196 local function current_time_check(op, hour, minute)
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
197 hour, minute = tonumber(hour), tonumber(minute);
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
198 local adj_op = op == "<" and "<" or ">="; -- Start time inclusive, end time exclusive
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
199 if minute == 0 then
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
200 return "(current_hour"..adj_op..hour..")";
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
201 else
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
202 return "((current_hour"..op..hour..") or (current_hour == "..hour.." and current_minute"..adj_op..minute.."))";
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
203 end
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
204 end
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
205
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
206 local function resolve_day_number(day_name)
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
207 return assert(day_numbers[day_name:sub(1,3):lower()], "Unknown day name: "..day_name);
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
208 end
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
209
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
210 function condition_handlers.DAY(days)
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
211 local conditions = {};
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
212 for day_range in days:gmatch("[^,]+") do
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
213 local day_start, day_end = day_range:match("(%a+)%s*%-%s*(%a+)");
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
214 if day_start and day_end then
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
215 local day_start_num, day_end_num = resolve_day_number(day_start), resolve_day_number(day_end);
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
216 local op = "and";
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
217 if day_end_num < day_start_num then
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
218 op = "or";
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
219 end
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
220 table.insert(conditions, ("current_day >= %d %s current_day <= %d"):format(day_start_num, op, day_end_num));
2070
2356114ff505 mod_firewall: Optimize string match operations, string.find is faster than .match since no string is returned
Kim Alvefur <zash@zash.se>
parents: 2036
diff changeset
221 elseif day_range:find("%a") then
968
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
222 local day = resolve_day_number(day_range:match("%a+"));
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
223 table.insert(conditions, "current_day == "..day);
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
224 else
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
225 error("Unable to parse day/day range: "..day_range);
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
226 end
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
227 end
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
228 assert(#conditions>0, "Expected a list of days or day ranges");
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
229 return "("..table.concat(conditions, ") or (")..")", { "time:day" };
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
230 end
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
231
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
232 function condition_handlers.TIME(ranges)
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
233 local conditions = {};
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
234 for range in ranges:gmatch("([^,]+)") do
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
235 local clause = {};
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
236 range = range:lower()
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
237 :gsub("(%d+):?(%d*) *am", function (h, m) return tostring(tonumber(h)%12)..":"..(tonumber(m) or "00"); end)
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
238 :gsub("(%d+):?(%d*) *pm", function (h, m) return tostring(tonumber(h)%12+12)..":"..(tonumber(m) or "00"); end);
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
239 local start_hour, start_minute = range:match("(%d+):(%d+) *%-");
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
240 local end_hour, end_minute = range:match("%- *(%d+):(%d+)");
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
241 local op = tonumber(start_hour) > tonumber(end_hour) and " or " or " and ";
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
242 if start_hour and end_hour then
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
243 table.insert(clause, current_time_check(">", start_hour, start_minute));
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
244 table.insert(clause, current_time_check("<", end_hour, end_minute));
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
245 end
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
246 if #clause == 0 then
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
247 error("Unable to parse time range: "..range);
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
248 end
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
249 table.insert(conditions, "("..table.concat(clause, " "..op.." ")..")");
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
250 end
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
251 return table.concat(conditions, " or "), { "time:hour,min" };
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
252 end
f3b0ddeebd9d mod_firewall/conditions: Add DAY and TIME conditions
Matthew Wild <mwild1@gmail.com>
parents: 965
diff changeset
253
2128
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2127
diff changeset
254 function condition_handlers.LIMIT(spec)
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2127
diff changeset
255 local name, param = spec:match("^(%w+) on (.+)$");
2519
d4bc434a60a4 mod_firewall: Update functions that use meta() to allow functions with deps inside expressions
Matthew Wild <mwild1@gmail.com>
parents: 2465
diff changeset
256 local meta_deps = {};
2128
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2127
diff changeset
257
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2127
diff changeset
258 if not name then
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2127
diff changeset
259 name = spec:match("^%w+$");
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2127
diff changeset
260 if not name then
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2127
diff changeset
261 error("Unable to parse LIMIT specification");
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2127
diff changeset
262 end
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2127
diff changeset
263 else
2519
d4bc434a60a4 mod_firewall: Update functions that use meta() to allow functions with deps inside expressions
Matthew Wild <mwild1@gmail.com>
parents: 2465
diff changeset
264 param = meta(("%q"):format(param), meta_deps);
2128
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2127
diff changeset
265 end
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2127
diff changeset
266
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2127
diff changeset
267 if not param then
2519
d4bc434a60a4 mod_firewall: Update functions that use meta() to allow functions with deps inside expressions
Matthew Wild <mwild1@gmail.com>
parents: 2465
diff changeset
268 return ("not global_throttle_%s:poll(1)"):format(name), { "globalthrottle:"..name, unpack(meta_deps) };
2128
21bc4d7cddae mod_firewall: Add support for throttling based on user-defined properties (experimental)
Matthew Wild <mwild1@gmail.com>
parents: 2127
diff changeset
269 end
2859
22e11645a895 mod_firewall: Trim trailing whitespace [luacheck]
Kim Alvefur <zash@zash.se>
parents: 2857
diff changeset
270 return ("not multi_throttle_%s:poll_on(%s, 1)"):format(name, param), { "multithrottle:"..name, unpack(meta_deps) };
971
53e158e44a44 mod_firewall: Add rate limiting capabilities, and keep zones and throttle objects in shared tables
Matthew Wild <mwild1@gmail.com>
parents: 968
diff changeset
271 end
53e158e44a44 mod_firewall: Add rate limiting capabilities, and keep zones and throttle objects in shared tables
Matthew Wild <mwild1@gmail.com>
parents: 968
diff changeset
272
2107
f445f43b9ba1 mod_firewall: Add support for session marking (MARK_ORIGIN, UNMARK_ORIGIN, ORIGIN_MARKED)
Matthew Wild <mwild1@gmail.com>
parents: 2075
diff changeset
273 function condition_handlers.ORIGIN_MARKED(name_and_time)
2127
59023dffbdd4 mod_firewall: Allow underscore in mark names (thanks Ge0rG)
Matthew Wild <mwild1@gmail.com>
parents: 2125
diff changeset
274 local name, time = name_and_time:match("^%s*([%w_]+)%s+%(([^)]+)s%)%s*$");
2107
f445f43b9ba1 mod_firewall: Add support for session marking (MARK_ORIGIN, UNMARK_ORIGIN, ORIGIN_MARKED)
Matthew Wild <mwild1@gmail.com>
parents: 2075
diff changeset
275 if not name then
2127
59023dffbdd4 mod_firewall: Allow underscore in mark names (thanks Ge0rG)
Matthew Wild <mwild1@gmail.com>
parents: 2125
diff changeset
276 name = name_and_time:match("^%s*([%w_]+)%s*$");
2107
f445f43b9ba1 mod_firewall: Add support for session marking (MARK_ORIGIN, UNMARK_ORIGIN, ORIGIN_MARKED)
Matthew Wild <mwild1@gmail.com>
parents: 2075
diff changeset
277 end
f445f43b9ba1 mod_firewall: Add support for session marking (MARK_ORIGIN, UNMARK_ORIGIN, ORIGIN_MARKED)
Matthew Wild <mwild1@gmail.com>
parents: 2075
diff changeset
278 if not name then
f445f43b9ba1 mod_firewall: Add support for session marking (MARK_ORIGIN, UNMARK_ORIGIN, ORIGIN_MARKED)
Matthew Wild <mwild1@gmail.com>
parents: 2075
diff changeset
279 error("Error parsing mark name, see documentation for usage examples");
f445f43b9ba1 mod_firewall: Add support for session marking (MARK_ORIGIN, UNMARK_ORIGIN, ORIGIN_MARKED)
Matthew Wild <mwild1@gmail.com>
parents: 2075
diff changeset
280 end
f445f43b9ba1 mod_firewall: Add support for session marking (MARK_ORIGIN, UNMARK_ORIGIN, ORIGIN_MARKED)
Matthew Wild <mwild1@gmail.com>
parents: 2075
diff changeset
281 if time then
2116
2bb42ba342f3 mod_firewall: Fix usage of incorrect variable current_time in ORIGIN_MARKED condition (thanks Ge0rG)
Matthew Wild <mwild1@gmail.com>
parents: 2109
diff changeset
282 return ("(current_timestamp - (session.firewall_marked_%s or 0)) < %d"):format(idsafe(name), tonumber(time)), { "timestamp" };
2107
f445f43b9ba1 mod_firewall: Add support for session marking (MARK_ORIGIN, UNMARK_ORIGIN, ORIGIN_MARKED)
Matthew Wild <mwild1@gmail.com>
parents: 2075
diff changeset
283 end
f445f43b9ba1 mod_firewall: Add support for session marking (MARK_ORIGIN, UNMARK_ORIGIN, ORIGIN_MARKED)
Matthew Wild <mwild1@gmail.com>
parents: 2075
diff changeset
284 return ("not not session.firewall_marked_"..idsafe(name));
f445f43b9ba1 mod_firewall: Add support for session marking (MARK_ORIGIN, UNMARK_ORIGIN, ORIGIN_MARKED)
Matthew Wild <mwild1@gmail.com>
parents: 2075
diff changeset
285 end
f445f43b9ba1 mod_firewall: Add support for session marking (MARK_ORIGIN, UNMARK_ORIGIN, ORIGIN_MARKED)
Matthew Wild <mwild1@gmail.com>
parents: 2075
diff changeset
286
2894
165d2877eeac mod_firewall: Add experimental user-centric persistent marks behind a feature flag
Kim Alvefur <zash@zash.se>
parents: 2882
diff changeset
287 function condition_handlers.USER_MARKED(name_and_time)
165d2877eeac mod_firewall: Add experimental user-centric persistent marks behind a feature flag
Kim Alvefur <zash@zash.se>
parents: 2882
diff changeset
288 local name, time = name_and_time:match("^%s*([%w_]+)%s+%(([^)]+)s%)%s*$");
165d2877eeac mod_firewall: Add experimental user-centric persistent marks behind a feature flag
Kim Alvefur <zash@zash.se>
parents: 2882
diff changeset
289 if not name then
165d2877eeac mod_firewall: Add experimental user-centric persistent marks behind a feature flag
Kim Alvefur <zash@zash.se>
parents: 2882
diff changeset
290 name = name_and_time:match("^%s*([%w_]+)%s*$");
165d2877eeac mod_firewall: Add experimental user-centric persistent marks behind a feature flag
Kim Alvefur <zash@zash.se>
parents: 2882
diff changeset
291 end
165d2877eeac mod_firewall: Add experimental user-centric persistent marks behind a feature flag
Kim Alvefur <zash@zash.se>
parents: 2882
diff changeset
292 if not name then
165d2877eeac mod_firewall: Add experimental user-centric persistent marks behind a feature flag
Kim Alvefur <zash@zash.se>
parents: 2882
diff changeset
293 error("Error parsing mark name, see documentation for usage examples");
165d2877eeac mod_firewall: Add experimental user-centric persistent marks behind a feature flag
Kim Alvefur <zash@zash.se>
parents: 2882
diff changeset
294 end
165d2877eeac mod_firewall: Add experimental user-centric persistent marks behind a feature flag
Kim Alvefur <zash@zash.se>
parents: 2882
diff changeset
295 if time then
165d2877eeac mod_firewall: Add experimental user-centric persistent marks behind a feature flag
Kim Alvefur <zash@zash.se>
parents: 2882
diff changeset
296 return ("(current_timestamp - (session.firewall_marks and session.firewall_marks.%s or 0)) < %d"):format(idsafe(name), tonumber(time)), { "timestamp" };
165d2877eeac mod_firewall: Add experimental user-centric persistent marks behind a feature flag
Kim Alvefur <zash@zash.se>
parents: 2882
diff changeset
297 end
165d2877eeac mod_firewall: Add experimental user-centric persistent marks behind a feature flag
Kim Alvefur <zash@zash.se>
parents: 2882
diff changeset
298 return ("not not (session.firewall_marks and session.firewall_marks."..idsafe(name)..")");
165d2877eeac mod_firewall: Add experimental user-centric persistent marks behind a feature flag
Kim Alvefur <zash@zash.se>
parents: 2882
diff changeset
299 end
165d2877eeac mod_firewall: Add experimental user-centric persistent marks behind a feature flag
Kim Alvefur <zash@zash.se>
parents: 2882
diff changeset
300
2554
19bb4606013f mod_firewall: Fix everything wrong with SENT_DIRECTED_PRESENCE_TO_SENDER
Matthew Wild <mwild1@gmail.com>
parents: 2553
diff changeset
301 function condition_handlers.SENT_DIRECTED_PRESENCE_TO_SENDER()
2882
6f289283feb1 mod_firewall: Prevent traceback if no directed presence has been sent (fixes #1081)
Kim Alvefur <zash@zash.se>
parents: 2859
diff changeset
302 return "not not (session.directed and session.directed[from])", { "from" };
2529
3fe4ca2b55c2 mod_firewall: Add 'SENT DIRECTED PRESENCE TO SENDER?'
Matthew Wild <mwild1@gmail.com>
parents: 2528
diff changeset
303 end
3fe4ca2b55c2 mod_firewall: Add 'SENT DIRECTED PRESENCE TO SENDER?'
Matthew Wild <mwild1@gmail.com>
parents: 2528
diff changeset
304
2618
c6652d055ba3 mod_firewall: Add some more comments
Matthew Wild <mwild1@gmail.com>
parents: 2594
diff changeset
305 -- TO FULL JID?
2555
a9eb4d5566f3 mod_firewall: Add TO FULL JID
Matthew Wild <mwild1@gmail.com>
parents: 2554
diff changeset
306 function condition_handlers.TO_FULL_JID()
4608
4e8fa75cc678 mod_firewall: Remove reliance on full_sessions being a global
Kim Alvefur <zash@zash.se>
parents: 3982
diff changeset
307 return "not not full_sessions[to]", { "to", "full_sessions" };
2555
a9eb4d5566f3 mod_firewall: Add TO FULL JID
Matthew Wild <mwild1@gmail.com>
parents: 2554
diff changeset
308 end
a9eb4d5566f3 mod_firewall: Add TO FULL JID
Matthew Wild <mwild1@gmail.com>
parents: 2554
diff changeset
309
2520
c6fd8975704b mod_firewall: Initial support for lists, in-memory and HTTP
Matthew Wild <mwild1@gmail.com>
parents: 2519
diff changeset
310 -- CHECK LIST: spammers contains $<@from>
c6fd8975704b mod_firewall: Initial support for lists, in-memory and HTTP
Matthew Wild <mwild1@gmail.com>
parents: 2519
diff changeset
311 function condition_handlers.CHECK_LIST(list_condition)
c6fd8975704b mod_firewall: Initial support for lists, in-memory and HTTP
Matthew Wild <mwild1@gmail.com>
parents: 2519
diff changeset
312 local list_name, expr = list_condition:match("(%S+) contains (.+)$");
2521
66b81e144ded mod_firewall: Fix CHECK LIST syntax check
Matthew Wild <mwild1@gmail.com>
parents: 2520
diff changeset
313 if not (list_name and expr) then
2520
c6fd8975704b mod_firewall: Initial support for lists, in-memory and HTTP
Matthew Wild <mwild1@gmail.com>
parents: 2519
diff changeset
314 error("Error parsing list check, syntax: LISTNAME contains EXPRESSION");
c6fd8975704b mod_firewall: Initial support for lists, in-memory and HTTP
Matthew Wild <mwild1@gmail.com>
parents: 2519
diff changeset
315 end
c6fd8975704b mod_firewall: Initial support for lists, in-memory and HTTP
Matthew Wild <mwild1@gmail.com>
parents: 2519
diff changeset
316 local meta_deps = {};
c6fd8975704b mod_firewall: Initial support for lists, in-memory and HTTP
Matthew Wild <mwild1@gmail.com>
parents: 2519
diff changeset
317 expr = meta(("%q"):format(expr), meta_deps);
c6fd8975704b mod_firewall: Initial support for lists, in-memory and HTTP
Matthew Wild <mwild1@gmail.com>
parents: 2519
diff changeset
318 return ("list_%s:contains(%s) == true"):format(list_name, expr), { "list:"..list_name, unpack(meta_deps) };
c6fd8975704b mod_firewall: Initial support for lists, in-memory and HTTP
Matthew Wild <mwild1@gmail.com>
parents: 2519
diff changeset
319 end
c6fd8975704b mod_firewall: Initial support for lists, in-memory and HTTP
Matthew Wild <mwild1@gmail.com>
parents: 2519
diff changeset
320
2528
44a71584521d mod_firewall: Add SEARCH, PATTERN definitions and SCAN condition to check tokenized stanza:find() against a list
Matthew Wild <mwild1@gmail.com>
parents: 2521
diff changeset
321 -- SCAN: body for word in badwords
44a71584521d mod_firewall: Add SEARCH, PATTERN definitions and SCAN condition to check tokenized stanza:find() against a list
Matthew Wild <mwild1@gmail.com>
parents: 2521
diff changeset
322 function condition_handlers.SCAN(scan_expression)
44a71584521d mod_firewall: Add SEARCH, PATTERN definitions and SCAN condition to check tokenized stanza:find() against a list
Matthew Wild <mwild1@gmail.com>
parents: 2521
diff changeset
323 local search_name, pattern_name, list_name = scan_expression:match("(%S+) for (%S+) in (%S+)$");
44a71584521d mod_firewall: Add SEARCH, PATTERN definitions and SCAN condition to check tokenized stanza:find() against a list
Matthew Wild <mwild1@gmail.com>
parents: 2521
diff changeset
324 if not (search_name) then
44a71584521d mod_firewall: Add SEARCH, PATTERN definitions and SCAN condition to check tokenized stanza:find() against a list
Matthew Wild <mwild1@gmail.com>
parents: 2521
diff changeset
325 error("Error parsing SCAN expression, syntax: SEARCH for PATTERN in LIST");
44a71584521d mod_firewall: Add SEARCH, PATTERN definitions and SCAN condition to check tokenized stanza:find() against a list
Matthew Wild <mwild1@gmail.com>
parents: 2521
diff changeset
326 end
2584
d64fc9c3cffd mod_firewall: Remove ambiguity from tokens dep parameter
Matthew Wild <mwild1@gmail.com>
parents: 2582
diff changeset
327 return ("scan_list(list_%s, %s)"):format(list_name, "tokens_"..search_name.."_"..pattern_name), { "scan_list", "tokens:"..search_name.."-"..pattern_name, "list:"..list_name };
2528
44a71584521d mod_firewall: Add SEARCH, PATTERN definitions and SCAN condition to check tokenized stanza:find() against a list
Matthew Wild <mwild1@gmail.com>
parents: 2521
diff changeset
328 end
44a71584521d mod_firewall: Add SEARCH, PATTERN definitions and SCAN condition to check tokenized stanza:find() against a list
Matthew Wild <mwild1@gmail.com>
parents: 2521
diff changeset
329
2618
c6652d055ba3 mod_firewall: Add some more comments
Matthew Wild <mwild1@gmail.com>
parents: 2594
diff changeset
330 -- COUNT: lines in body < 10
2545
9b46d24edf0d mod_firewall: Add and document COUNT condition
Matthew Wild <mwild1@gmail.com>
parents: 2537
diff changeset
331 local valid_comp_ops = { [">"] = ">", ["<"] = "<", ["="] = "==", ["=="] = "==", ["<="] = "<=", [">="] = ">=" };
9b46d24edf0d mod_firewall: Add and document COUNT condition
Matthew Wild <mwild1@gmail.com>
parents: 2537
diff changeset
332 function condition_handlers.COUNT(count_expression)
9b46d24edf0d mod_firewall: Add and document COUNT condition
Matthew Wild <mwild1@gmail.com>
parents: 2537
diff changeset
333 local pattern_name, search_name, comparator_expression = count_expression:match("(%S+) in (%S+) (.+)$");
9b46d24edf0d mod_firewall: Add and document COUNT condition
Matthew Wild <mwild1@gmail.com>
parents: 2537
diff changeset
334 if not (pattern_name) then
9b46d24edf0d mod_firewall: Add and document COUNT condition
Matthew Wild <mwild1@gmail.com>
parents: 2537
diff changeset
335 error("Error parsing COUNT expression, syntax: PATTERN in SEARCH COMPARATOR");
9b46d24edf0d mod_firewall: Add and document COUNT condition
Matthew Wild <mwild1@gmail.com>
parents: 2537
diff changeset
336 end
9b46d24edf0d mod_firewall: Add and document COUNT condition
Matthew Wild <mwild1@gmail.com>
parents: 2537
diff changeset
337 local value;
9b46d24edf0d mod_firewall: Add and document COUNT condition
Matthew Wild <mwild1@gmail.com>
parents: 2537
diff changeset
338 comparator_expression = comparator_expression:gsub("%d+", function (value_string)
9b46d24edf0d mod_firewall: Add and document COUNT condition
Matthew Wild <mwild1@gmail.com>
parents: 2537
diff changeset
339 value = tonumber(value_string);
9b46d24edf0d mod_firewall: Add and document COUNT condition
Matthew Wild <mwild1@gmail.com>
parents: 2537
diff changeset
340 return "";
9b46d24edf0d mod_firewall: Add and document COUNT condition
Matthew Wild <mwild1@gmail.com>
parents: 2537
diff changeset
341 end);
9b46d24edf0d mod_firewall: Add and document COUNT condition
Matthew Wild <mwild1@gmail.com>
parents: 2537
diff changeset
342 if not value then
9b46d24edf0d mod_firewall: Add and document COUNT condition
Matthew Wild <mwild1@gmail.com>
parents: 2537
diff changeset
343 error("Error parsing COUNT expression, expected value");
9b46d24edf0d mod_firewall: Add and document COUNT condition
Matthew Wild <mwild1@gmail.com>
parents: 2537
diff changeset
344 end
9b46d24edf0d mod_firewall: Add and document COUNT condition
Matthew Wild <mwild1@gmail.com>
parents: 2537
diff changeset
345 local comp_op = comparator_expression:gsub("%s+", "");
9b46d24edf0d mod_firewall: Add and document COUNT condition
Matthew Wild <mwild1@gmail.com>
parents: 2537
diff changeset
346 assert(valid_comp_ops[comp_op], "Error parsing COUNT expression, unknown comparison operator: "..comp_op);
9b46d24edf0d mod_firewall: Add and document COUNT condition
Matthew Wild <mwild1@gmail.com>
parents: 2537
diff changeset
347 return ("it_count(search_%s:gmatch(pattern_%s)) %s %d"):format(search_name, pattern_name, comp_op, value), { "it_count", "search:"..search_name, "pattern:"..pattern_name };
9b46d24edf0d mod_firewall: Add and document COUNT condition
Matthew Wild <mwild1@gmail.com>
parents: 2537
diff changeset
348 end
9b46d24edf0d mod_firewall: Add and document COUNT condition
Matthew Wild <mwild1@gmail.com>
parents: 2537
diff changeset
349
947
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
350 return condition_handlers;