Software `/` code `/` prosody-modules

Annotate

mod_firewall/mod_firewall.lua @ 2126:b0d711cd3da5

mod_firewall: Fix syntax error

author	Matthew Wild <mwild1@gmail.com>
date	Thu, 17 Mar 2016 21:30:09 +0000
parent	2125:edf5cf3c474b
child	2128:21bc4d7cddae

rev	line source
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	1
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	2 local resolve_relative_path = require "core.configmanager".resolve_relative_path;
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	3 local logger = require "util.logger".init;
971 53e158e44a44 mod_firewall: Add rate limiting capabilities, and keep zones and throttle objects in shared tables Matthew Wild <mwild1@gmail.com> parents: 967 diff changeset	4 local it = require "util.iterators";
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	5
999 197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	6 local definitions = module:shared("definitions");
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	7 local active_definitions = {};
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	8
2113 d75145297bf9 mod_firewall: Support for defining extra chains in the config file Matthew Wild <mwild1@gmail.com> parents: 2101 diff changeset	9 local default_chains = {
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	10 preroute = {
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	11 type = "event";
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	12 priority = 0.1;
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	13 "pre-message/bare", "pre-message/full", "pre-message/host";
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	14 "pre-presence/bare", "pre-presence/full", "pre-presence/host";
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	15 "pre-iq/bare", "pre-iq/full", "pre-iq/host";
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	16 };
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	17 deliver = {
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	18 type = "event";
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	19 priority = 0.1;
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	20 "message/bare", "message/full", "message/host";
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	21 "presence/bare", "presence/full", "presence/host";
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	22 "iq/bare", "iq/full", "iq/host";
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	23 };
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	24 deliver_remote = {
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	25 type = "event"; "route/remote";
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	26 priority = 0.1;
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	27 };
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	28 };
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	29
2113 d75145297bf9 mod_firewall: Support for defining extra chains in the config file Matthew Wild <mwild1@gmail.com> parents: 2101 diff changeset	30 local extra_chains = module:get_option("firewall_extra_chains", {});
d75145297bf9 mod_firewall: Support for defining extra chains in the config file Matthew Wild <mwild1@gmail.com> parents: 2101 diff changeset	31
d75145297bf9 mod_firewall: Support for defining extra chains in the config file Matthew Wild <mwild1@gmail.com> parents: 2101 diff changeset	32 local chains = {};
d75145297bf9 mod_firewall: Support for defining extra chains in the config file Matthew Wild <mwild1@gmail.com> parents: 2101 diff changeset	33 for k,v in pairs(default_chains) do
d75145297bf9 mod_firewall: Support for defining extra chains in the config file Matthew Wild <mwild1@gmail.com> parents: 2101 diff changeset	34 chains[k] = v;
d75145297bf9 mod_firewall: Support for defining extra chains in the config file Matthew Wild <mwild1@gmail.com> parents: 2101 diff changeset	35 end
d75145297bf9 mod_firewall: Support for defining extra chains in the config file Matthew Wild <mwild1@gmail.com> parents: 2101 diff changeset	36 for k,v in pairs(extra_chains) do
d75145297bf9 mod_firewall: Support for defining extra chains in the config file Matthew Wild <mwild1@gmail.com> parents: 2101 diff changeset	37 chains[k] = v;
d75145297bf9 mod_firewall: Support for defining extra chains in the config file Matthew Wild <mwild1@gmail.com> parents: 2101 diff changeset	38 end
d75145297bf9 mod_firewall: Support for defining extra chains in the config file Matthew Wild <mwild1@gmail.com> parents: 2101 diff changeset	39
2124 89363766202c mod_firewall: Add comment to document idsafe() Matthew Wild <mwild1@gmail.com> parents: 2118 diff changeset	40 -- Returns the input if it is safe to be used as a variable name, otherwise nil
2099 a8c701631d0b mod_firewall: Make idsafe() a global function so libraries can re-use it Matthew Wild <mwild1@gmail.com> parents: 2080 diff changeset	41 function idsafe(name)
a8c701631d0b mod_firewall: Make idsafe() a global function so libraries can re-use it Matthew Wild <mwild1@gmail.com> parents: 2080 diff changeset	42 return name:match("^%a[%w_]*$")
971 53e158e44a44 mod_firewall: Add rate limiting capabilities, and keep zones and throttle objects in shared tables Matthew Wild <mwild1@gmail.com> parents: 967 diff changeset	43 end
53e158e44a44 mod_firewall: Add rate limiting capabilities, and keep zones and throttle objects in shared tables Matthew Wild <mwild1@gmail.com> parents: 967 diff changeset	44
2125 edf5cf3c474b mod_firewall: Move meta() function to main module, and make it a global so libs can use it Matthew Wild <mwild1@gmail.com> parents: 2124 diff changeset	45 -- Run quoted (%q) strings through this to allow them to contain code. e.g.: LOG=Received: $(stanza:top_tag())
edf5cf3c474b mod_firewall: Move meta() function to main module, and make it a global so libs can use it Matthew Wild <mwild1@gmail.com> parents: 2124 diff changeset	46 function meta(s, extra)
edf5cf3c474b mod_firewall: Move meta() function to main module, and make it a global so libs can use it Matthew Wild <mwild1@gmail.com> parents: 2124 diff changeset	47 return (s:gsub("$(%b())", [["..tostring(%1).."]])
edf5cf3c474b mod_firewall: Move meta() function to main module, and make it a global so libs can use it Matthew Wild <mwild1@gmail.com> parents: 2124 diff changeset	48 :gsub("$(%b<>)", function (expr)
edf5cf3c474b mod_firewall: Move meta() function to main module, and make it a global so libs can use it Matthew Wild <mwild1@gmail.com> parents: 2124 diff changeset	49 expr = expr:sub(2,-2);
edf5cf3c474b mod_firewall: Move meta() function to main module, and make it a global so libs can use it Matthew Wild <mwild1@gmail.com> parents: 2124 diff changeset	50 if expr:match("^@") then
2126 b0d711cd3da5 mod_firewall: Fix syntax error Matthew Wild <mwild1@gmail.com> parents: 2125 diff changeset	51 return "\"..stanza.attr["..("%q"):format(expr:sub(2)).."]..\"";
2125 edf5cf3c474b mod_firewall: Move meta() function to main module, and make it a global so libs can use it Matthew Wild <mwild1@gmail.com> parents: 2124 diff changeset	52 end
edf5cf3c474b mod_firewall: Move meta() function to main module, and make it a global so libs can use it Matthew Wild <mwild1@gmail.com> parents: 2124 diff changeset	53 return "\"..stanza:find("..("%q"):format(expr:sub(2, -2))..")..\"";
edf5cf3c474b mod_firewall: Move meta() function to main module, and make it a global so libs can use it Matthew Wild <mwild1@gmail.com> parents: 2124 diff changeset	54 end)
edf5cf3c474b mod_firewall: Move meta() function to main module, and make it a global so libs can use it Matthew Wild <mwild1@gmail.com> parents: 2124 diff changeset	55 :gsub("$$(%a+)", extra or {})
edf5cf3c474b mod_firewall: Move meta() function to main module, and make it a global so libs can use it Matthew Wild <mwild1@gmail.com> parents: 2124 diff changeset	56 :gsub([[^""%.%.]], "")
edf5cf3c474b mod_firewall: Move meta() function to main module, and make it a global so libs can use it Matthew Wild <mwild1@gmail.com> parents: 2124 diff changeset	57 :gsub([[%.%.""$]], ""));
edf5cf3c474b mod_firewall: Move meta() function to main module, and make it a global so libs can use it Matthew Wild <mwild1@gmail.com> parents: 2124 diff changeset	58 end
edf5cf3c474b mod_firewall: Move meta() function to main module, and make it a global so libs can use it Matthew Wild <mwild1@gmail.com> parents: 2124 diff changeset	59
edf5cf3c474b mod_firewall: Move meta() function to main module, and make it a global so libs can use it Matthew Wild <mwild1@gmail.com> parents: 2124 diff changeset	60
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	61 -- Dependency locations:
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	62 -- <type lib>
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	63 -- <type global>
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	64 -- function handler()
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	65 -- <local deps>
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	66 -- if <conditions> then
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	67 -- <actions>
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	68 -- end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	69 -- end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	70
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	71 local available_deps = {
1303 8a3f3f485675 mod_firewall: Produce code with nicer indentation Florian Zeitz <florob@babelmonkeys.de> parents: 1052 diff changeset	72 st = { global_code = [[local st = require "util.stanza";]]};
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	73 jid_split = {
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	74 global_code = [[local jid_split = require "util.jid".split;]];
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	75 };
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	76 jid_bare = {
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	77 global_code = [[local jid_bare = require "util.jid".bare;]];
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	78 };
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	79 to = { local_code = [[local to = stanza.attr.to;]] };
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	80 from = { local_code = [[local from = stanza.attr.from;]] };
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	81 type = { local_code = [[local type = stanza.attr.type;]] };
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	82 name = { local_code = [[local name = stanza.name]] };
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	83 split_to = { -- The stanza's split to address
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	84 depends = { "jid_split", "to" };
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	85 local_code = [[local to_node, to_host, to_resource = jid_split(to);]];
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	86 };
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	87 split_from = { -- The stanza's split from address
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	88 depends = { "jid_split", "from" };
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	89 local_code = [[local from_node, from_host, from_resource = jid_split(from);]];
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	90 };
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	91 bare_to = { depends = { "jid_bare", "to" }, local_code = "local bare_to = jid_bare(to)"};
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	92 bare_from = { depends = { "jid_bare", "from" }, local_code = "local bare_from = jid_bare(from)"};
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	93 group_contains = {
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	94 global_code = [[local group_contains = module:depends("groups").group_contains]];
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	95 };
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	96 is_admin = { global_code = [[local is_admin = require "core.usermanager".is_admin]]};
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	97 core_post_stanza = { global_code = [[local core_post_stanza = prosody.core_post_stanza]] };
965 d4e24fb289c0 mod_firewall: Improve zone handling, make it more efficient, and support dynamic dependencies in the compiler. ENTERING and LEAVING conditions now work at expected (not matching stanzas flowing within a zone). Matthew Wild <mwild1@gmail.com> parents: 960 diff changeset	98 zone = { global_code = function (zone)
971 53e158e44a44 mod_firewall: Add rate limiting capabilities, and keep zones and throttle objects in shared tables Matthew Wild <mwild1@gmail.com> parents: 967 diff changeset	99 assert(idsafe(zone), "Invalid zone name: "..zone);
965 d4e24fb289c0 mod_firewall: Improve zone handling, make it more efficient, and support dynamic dependencies in the compiler. ENTERING and LEAVING conditions now work at expected (not matching stanzas flowing within a zone). Matthew Wild <mwild1@gmail.com> parents: 960 diff changeset	100 return ("local zone_%s = zones[%q] or {};"):format(zone, zone);
d4e24fb289c0 mod_firewall: Improve zone handling, make it more efficient, and support dynamic dependencies in the compiler. ENTERING and LEAVING conditions now work at expected (not matching stanzas flowing within a zone). Matthew Wild <mwild1@gmail.com> parents: 960 diff changeset	101 end };
966 a65df6e97d94 mod_firewall: Add time and date deps Matthew Wild <mwild1@gmail.com> parents: 965 diff changeset	102 date_time = { global_code = [[local os_date = os.date]]; local_code = [[local current_date_time = os_date("*t");]] };
a65df6e97d94 mod_firewall: Add time and date deps Matthew Wild <mwild1@gmail.com> parents: 965 diff changeset	103 time = { local_code = function (what)
a65df6e97d94 mod_firewall: Add time and date deps Matthew Wild <mwild1@gmail.com> parents: 965 diff changeset	104 local defs = {};
a65df6e97d94 mod_firewall: Add time and date deps Matthew Wild <mwild1@gmail.com> parents: 965 diff changeset	105 for field in what:gmatch("%a+") do
a65df6e97d94 mod_firewall: Add time and date deps Matthew Wild <mwild1@gmail.com> parents: 965 diff changeset	106 table.insert(defs, ("local current_%s = current_date_time.%s;"):format(field, field));
a65df6e97d94 mod_firewall: Add time and date deps Matthew Wild <mwild1@gmail.com> parents: 965 diff changeset	107 end
a65df6e97d94 mod_firewall: Add time and date deps Matthew Wild <mwild1@gmail.com> parents: 965 diff changeset	108 return table.concat(defs, " ");
a65df6e97d94 mod_firewall: Add time and date deps Matthew Wild <mwild1@gmail.com> parents: 965 diff changeset	109 end, depends = { "date_time" }; };
2100 cbd0095e9302 mod_firewall: Add 'timestamp' dep to get current_timestamp Matthew Wild <mwild1@gmail.com> parents: 2099 diff changeset	110 timestamp = { global_code = [[local get_time = require "socket".gettime]]; local_code = [[local current_timestamp = get_time()]]; };
971 53e158e44a44 mod_firewall: Add rate limiting capabilities, and keep zones and throttle objects in shared tables Matthew Wild <mwild1@gmail.com> parents: 967 diff changeset	111 throttle = {
53e158e44a44 mod_firewall: Add rate limiting capabilities, and keep zones and throttle objects in shared tables Matthew Wild <mwild1@gmail.com> parents: 967 diff changeset	112 global_code = function (throttle)
53e158e44a44 mod_firewall: Add rate limiting capabilities, and keep zones and throttle objects in shared tables Matthew Wild <mwild1@gmail.com> parents: 967 diff changeset	113 assert(idsafe(throttle), "Invalid rate limit name: "..throttle);
999 197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	114 assert(active_definitions.RATE[throttle], "Unknown rate limit: "..throttle);
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	115 return ("local throttle_%s = rates.%s;"):format(throttle, throttle);
971 53e158e44a44 mod_firewall: Add rate limiting capabilities, and keep zones and throttle objects in shared tables Matthew Wild <mwild1@gmail.com> parents: 967 diff changeset	116 end;
53e158e44a44 mod_firewall: Add rate limiting capabilities, and keep zones and throttle objects in shared tables Matthew Wild <mwild1@gmail.com> parents: 967 diff changeset	117 };
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	118 };
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	119
2077 368b091e723b mod_firewall: Rename argument to avoid name clash [luacheck] Kim Alvefur <zash@zash.se> parents: 2076 diff changeset	120 local function include_dep(dependency, code)
368b091e723b mod_firewall: Rename argument to avoid name clash [luacheck] Kim Alvefur <zash@zash.se> parents: 2076 diff changeset	121 local dep, dep_param = dependency:match("^([^:]+):?(.*)$");
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	122 local dep_info = available_deps[dep];
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	123 if not dep_info then
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	124 module:log("error", "Dependency not found: %s", dep);
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	125 return;
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	126 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	127 if code.included_deps[dep] then
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	128 if code.included_deps[dep] ~= true then
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	129 module:log("error", "Circular dependency on %s", dep);
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	130 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	131 return;
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	132 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	133 code.included_deps[dep] = false; -- Pending flag (used to detect circular references)
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	134 for _, dep_dep in ipairs(dep_info.depends or {}) do
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	135 include_dep(dep_dep, code);
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	136 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	137 if dep_info.global_code then
965 d4e24fb289c0 mod_firewall: Improve zone handling, make it more efficient, and support dynamic dependencies in the compiler. ENTERING and LEAVING conditions now work at expected (not matching stanzas flowing within a zone). Matthew Wild <mwild1@gmail.com> parents: 960 diff changeset	138 if dep_param ~= "" then
d4e24fb289c0 mod_firewall: Improve zone handling, make it more efficient, and support dynamic dependencies in the compiler. ENTERING and LEAVING conditions now work at expected (not matching stanzas flowing within a zone). Matthew Wild <mwild1@gmail.com> parents: 960 diff changeset	139 table.insert(code.global_header, dep_info.global_code(dep_param));
d4e24fb289c0 mod_firewall: Improve zone handling, make it more efficient, and support dynamic dependencies in the compiler. ENTERING and LEAVING conditions now work at expected (not matching stanzas flowing within a zone). Matthew Wild <mwild1@gmail.com> parents: 960 diff changeset	140 else
d4e24fb289c0 mod_firewall: Improve zone handling, make it more efficient, and support dynamic dependencies in the compiler. ENTERING and LEAVING conditions now work at expected (not matching stanzas flowing within a zone). Matthew Wild <mwild1@gmail.com> parents: 960 diff changeset	141 table.insert(code.global_header, dep_info.global_code);
d4e24fb289c0 mod_firewall: Improve zone handling, make it more efficient, and support dynamic dependencies in the compiler. ENTERING and LEAVING conditions now work at expected (not matching stanzas flowing within a zone). Matthew Wild <mwild1@gmail.com> parents: 960 diff changeset	142 end
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	143 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	144 if dep_info.local_code then
965 d4e24fb289c0 mod_firewall: Improve zone handling, make it more efficient, and support dynamic dependencies in the compiler. ENTERING and LEAVING conditions now work at expected (not matching stanzas flowing within a zone). Matthew Wild <mwild1@gmail.com> parents: 960 diff changeset	145 if dep_param ~= "" then
1303 8a3f3f485675 mod_firewall: Produce code with nicer indentation Florian Zeitz <florob@babelmonkeys.de> parents: 1052 diff changeset	146 table.insert(code, "\n\t\t-- "..dep.."\n\t\t"..dep_info.local_code(dep_param).."\n");
965 d4e24fb289c0 mod_firewall: Improve zone handling, make it more efficient, and support dynamic dependencies in the compiler. ENTERING and LEAVING conditions now work at expected (not matching stanzas flowing within a zone). Matthew Wild <mwild1@gmail.com> parents: 960 diff changeset	147 else
1303 8a3f3f485675 mod_firewall: Produce code with nicer indentation Florian Zeitz <florob@babelmonkeys.de> parents: 1052 diff changeset	148 table.insert(code, "\n\t\t-- "..dep.."\n\t\t"..dep_info.local_code.."\n");
965 d4e24fb289c0 mod_firewall: Improve zone handling, make it more efficient, and support dynamic dependencies in the compiler. ENTERING and LEAVING conditions now work at expected (not matching stanzas flowing within a zone). Matthew Wild <mwild1@gmail.com> parents: 960 diff changeset	149 end
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	150 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	151 code.included_deps[dep] = true;
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	152 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	153
999 197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	154 local definition_handlers = module:require("definitions");
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	155 local condition_handlers = module:require("conditions");
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	156 local action_handlers = module:require("actions");
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	157
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	158 local function new_rule(ruleset, chain)
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	159 assert(chain, "no chain specified");
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	160 local rule = { conditions = {}, actions = {}, deps = {} };
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	161 table.insert(ruleset[chain], rule);
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	162 return rule;
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	163 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	164
2078 11539785cb92 mod_firewall: Split compile function into two parts in order to separate their scopes Kim Alvefur <zash@zash.se> parents: 2077 diff changeset	165 local function parse_firewall_rules(filename)
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	166 local line_no = 0;
1343 7dbde05b48a9 all the things: Remove trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 1325 diff changeset	167
956 33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	168 local function errmsg(err)
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	169 return "Error compiling "..filename.." on line "..line_no..": "..err;
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	170 end
1343 7dbde05b48a9 all the things: Remove trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 1325 diff changeset	171
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	172 local ruleset = {
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	173 deliver = {};
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	174 };
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	175
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	176 local chain = "deliver"; -- Default chain
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	177 local rule;
1343 7dbde05b48a9 all the things: Remove trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 1325 diff changeset	178
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	179 local file, err = io.open(filename);
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	180 if not file then return nil, err; end
1343 7dbde05b48a9 all the things: Remove trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 1325 diff changeset	181
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	182 local state; -- nil -> "rules" -> "actions" -> nil -> ...
1343 7dbde05b48a9 all the things: Remove trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 1325 diff changeset	183
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	184 local line_hold;
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	185 for line in file:lines() do
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	186 line = line:match("^%s(.-)%s$");
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	187 if line_hold and line:sub(-1,-1) ~= "\\" then
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	188 line = line_hold..line;
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	189 line_hold = nil;
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	190 elseif line:sub(-1,-1) == "\\" then
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	191 line_hold = (line_hold or "")..line:sub(1,-2);
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	192 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	193 line_no = line_no + 1;
1343 7dbde05b48a9 all the things: Remove trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 1325 diff changeset	194
2080 a435db77a5e5 mod_firewall: Silence warning about empty if branch [luacheck] Kim Alvefur <zash@zash.se> parents: 2078 diff changeset	195 if line_hold or line:find("^[#;]") then -- luacheck: ignore 542
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	196 -- No action; comment or partial line
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	197 elseif line == "" then
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	198 if state == "rules" then
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	199 return nil, ("Expected an action on line %d for preceding criteria")
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	200 :format(line_no);
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	201 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	202 state = nil;
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: 1343 diff changeset	203 elseif not(state) and line:sub(1, 2) == "::" then
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	204 chain = line:gsub("^::%s*", "");
980 aeb11522a44f mod_firewall: Fix variable name Kim Alvefur <zash@zash.se> parents: 971 diff changeset	205 local chain_info = chains[chain];
956 33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	206 if not chain_info then
980 aeb11522a44f mod_firewall: Fix variable name Kim Alvefur <zash@zash.se> parents: 971 diff changeset	207 return nil, errmsg("Unknown chain: "..chain);
956 33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	208 elseif chain_info.type ~= "event" then
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	209 return nil, errmsg("Only event chains supported at the moment");
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	210 end
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	211 ruleset[chain] = ruleset[chain] or {};
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: 1343 diff changeset	212 elseif not(state) and line:sub(1,1) == "%" then -- Definition (zone, limit, etc.)
999 197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	213 local what, name = line:match("^%%%s*(%w+) +([^ :]+)");
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	214 if not definition_handlers[what] then
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	215 return nil, errmsg("Definition of unknown object: "..what);
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	216 elseif not name or not idsafe(name) then
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	217 return nil, errmsg("Invalid "..what.." name");
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	218 end
999 197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	219
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	220 local val = line:match(": ?(.*)$");
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: 1343 diff changeset	221 if not val and line:find(":<") then -- Read from file
999 197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	222 local fn = line:match(":< ?(.-)%s*$");
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	223 if not fn then
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	224 return nil, errmsg("Unable to parse filename");
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	225 end
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	226 local f, err = io.open(fn);
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	227 if not f then return nil, errmsg(err); end
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	228 val = f:read("*a"):gsub("\r?\n", " "):gsub("%s+5", "");
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	229 end
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	230 if not val then
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	231 return nil, errmsg("No value given for definition");
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	232 end
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	233
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	234 local ok, ret = pcall(definition_handlers[what], name, val);
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	235 if not ok then
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	236 return nil, errmsg(ret);
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	237 end
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	238
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	239 if not active_definitions[what] then
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	240 active_definitions[what] = {};
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	241 end
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	242 active_definitions[what][name] = ret;
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: 1343 diff changeset	243 elseif line:find("^[^%s:]+[%.=]") then
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	244 -- Action
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	245 if state == nil then
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	246 -- This is a standalone action with no conditions
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	247 rule = new_rule(ruleset, chain);
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	248 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	249 state = "actions";
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	250 -- Action handlers?
2101 41a0a9db89ef mod_firewall: Allow actions to have underscores in their names Matthew Wild <mwild1@gmail.com> parents: 2100 diff changeset	251 local action = line:match("^[%w_]+");
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	252 if not action_handlers[action] then
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	253 return nil, ("Unknown action on line %d: %s"):format(line_no, action or "<unknown>");
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	254 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	255 table.insert(rule.actions, "-- "..line)
956 33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	256 local ok, action_string, action_deps = pcall(action_handlers[action], line:match("=(.+)$"));
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	257 if not ok then
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	258 return nil, errmsg(action_string);
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	259 end
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	260 table.insert(rule.actions, action_string);
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	261 for _, dep in ipairs(action_deps or {}) do
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	262 table.insert(rule.deps, dep);
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	263 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	264 elseif state == "actions" then -- state is actions but action pattern did not match
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	265 state = nil; -- Awaiting next rule, etc.
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	266 table.insert(ruleset[chain], rule);
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	267 rule = nil;
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	268 else
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	269 if not state then
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	270 state = "rules";
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	271 rule = new_rule(ruleset, chain);
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	272 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	273 -- Check standard modifiers for the condition (e.g. NOT)
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	274 local negated;
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	275 local condition = line:match("^[^:=%.]*");
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: 1343 diff changeset	276 if condition:find("%f[%w]NOT%f[^%w]") then
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	277 local s, e = condition:match("%f[%w]()NOT()%f[^%w]");
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	278 condition = (condition:sub(1,s-1)..condition:sub(e+1, -1)):match("^%s(.-)%s$");
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	279 negated = true;
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	280 end
998 6fdcebbd2284 mod_firewall: Fix conditions with spaces Matthew Wild <mwild1@gmail.com> parents: 996 diff changeset	281 condition = condition:gsub(" ", "_");
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	282 if not condition_handlers[condition] then
998 6fdcebbd2284 mod_firewall: Fix conditions with spaces Matthew Wild <mwild1@gmail.com> parents: 996 diff changeset	283 return nil, ("Unknown condition on line %d: %s"):format(line_no, (condition:gsub("_", " ")));
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	284 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	285 -- Get the code for this condition
956 33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	286 local ok, condition_code, condition_deps = pcall(condition_handlers[condition], line:match(":%s?(.+)$"));
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	287 if not ok then
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	288 return nil, errmsg(condition_code);
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	289 end
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	290 if negated then condition_code = "not("..condition_code..")"; end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	291 table.insert(rule.conditions, condition_code);
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	292 for _, dep in ipairs(condition_deps or {}) do
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	293 table.insert(rule.deps, dep);
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	294 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	295 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	296 end
2078 11539785cb92 mod_firewall: Split compile function into two parts in order to separate their scopes Kim Alvefur <zash@zash.se> parents: 2077 diff changeset	297 return ruleset;
11539785cb92 mod_firewall: Split compile function into two parts in order to separate their scopes Kim Alvefur <zash@zash.se> parents: 2077 diff changeset	298 end
1343 7dbde05b48a9 all the things: Remove trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 1325 diff changeset	299
2078 11539785cb92 mod_firewall: Split compile function into two parts in order to separate their scopes Kim Alvefur <zash@zash.se> parents: 2077 diff changeset	300 local function process_firewall_rules(ruleset)
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	301 -- Compile ruleset and return complete code
1343 7dbde05b48a9 all the things: Remove trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 1325 diff changeset	302
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	303 local chain_handlers = {};
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	304
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	305 -- Loop through the chains in the parsed ruleset (e.g. incoming, outgoing)
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	306 for chain_name, rules in pairs(ruleset) do
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	307 local code = { included_deps = {}, global_header = {} };
1304 9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	308 local condition_uses = {};
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	309 -- This inner loop assumes chain is an event-based, not a filter-based
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	310 -- chain (filter-based will be added later)
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	311 for _, rule in ipairs(rules) do
1304 9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	312 for _, condition in ipairs(rule.conditions) do
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: 1343 diff changeset	313 if condition:find("^not%(.+%)$") then
1304 9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	314 condition = condition:match("^not%((.+)%)$");
9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	315 end
9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	316 condition_uses[condition] = (condition_uses[condition] or 0) + 1;
9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	317 end
9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	318 end
9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	319
9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	320 local condition_cache, n_conditions = {}, 0;
9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	321 for _, rule in ipairs(rules) do
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	322 for _, dep in ipairs(rule.deps) do
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	323 include_dep(dep, code);
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	324 end
1303 8a3f3f485675 mod_firewall: Produce code with nicer indentation Florian Zeitz <florob@babelmonkeys.de> parents: 1052 diff changeset	325 table.insert(code, "\n\t\t");
8a3f3f485675 mod_firewall: Produce code with nicer indentation Florian Zeitz <florob@babelmonkeys.de> parents: 1052 diff changeset	326 local rule_code;
967 a88f33fe6970 mod_firewall: Don't add empty conditions check when no conditions are listed in a rule Matthew Wild <mwild1@gmail.com> parents: 966 diff changeset	327 if #rule.conditions > 0 then
996 37af655ca575 mod_firewall: Cache conditions, so that they are only calculated once per chain execution Matthew Wild <mwild1@gmail.com> parents: 980 diff changeset	328 for i, condition in ipairs(rule.conditions) do
1001 c0850793b716 mod_firewall: don't use %b() (not technically correct) Matthew Wild <mwild1@gmail.com> parents: 999 diff changeset	329 local negated = condition:match("^not%(.+%)$");
996 37af655ca575 mod_firewall: Cache conditions, so that they are only calculated once per chain execution Matthew Wild <mwild1@gmail.com> parents: 980 diff changeset	330 if negated then
37af655ca575 mod_firewall: Cache conditions, so that they are only calculated once per chain execution Matthew Wild <mwild1@gmail.com> parents: 980 diff changeset	331 condition = condition:match("^not%((.+)%)$");
37af655ca575 mod_firewall: Cache conditions, so that they are only calculated once per chain execution Matthew Wild <mwild1@gmail.com> parents: 980 diff changeset	332 end
1304 9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	333 if condition_uses[condition] > 1 then
9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	334 local name = condition_cache[condition];
9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	335 if not name then
9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	336 n_conditions = n_conditions + 1;
9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	337 name = "condition"..n_conditions;
9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	338 condition_cache[condition] = name;
9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	339 table.insert(code, "local "..name.." = "..condition..";\n\t\t");
9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	340 end
9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	341 rule.conditions[i] = (negated and "not(" or "")..name..(negated and ")" or "");
996 37af655ca575 mod_firewall: Cache conditions, so that they are only calculated once per chain execution Matthew Wild <mwild1@gmail.com> parents: 980 diff changeset	342 else
1304 9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	343 rule.conditions[i] = (negated and "not(" or "(")..condition..")";
996 37af655ca575 mod_firewall: Cache conditions, so that they are only calculated once per chain execution Matthew Wild <mwild1@gmail.com> parents: 980 diff changeset	344 end
37af655ca575 mod_firewall: Cache conditions, so that they are only calculated once per chain execution Matthew Wild <mwild1@gmail.com> parents: 980 diff changeset	345 end
1304 9f24ccaa66a6 mod_firewall: Do not cache conditions with only a single use Florian Zeitz <florob@babelmonkeys.de> parents: 1303 diff changeset	346
1303 8a3f3f485675 mod_firewall: Produce code with nicer indentation Florian Zeitz <florob@babelmonkeys.de> parents: 1052 diff changeset	347 rule_code = "if "..table.concat(rule.conditions, " and ").." then\n\t\t\t"
8a3f3f485675 mod_firewall: Produce code with nicer indentation Florian Zeitz <florob@babelmonkeys.de> parents: 1052 diff changeset	348 ..table.concat(rule.actions, "\n\t\t\t")
8a3f3f485675 mod_firewall: Produce code with nicer indentation Florian Zeitz <florob@babelmonkeys.de> parents: 1052 diff changeset	349 .."\n\t\tend\n";
8a3f3f485675 mod_firewall: Produce code with nicer indentation Florian Zeitz <florob@babelmonkeys.de> parents: 1052 diff changeset	350 else
8a3f3f485675 mod_firewall: Produce code with nicer indentation Florian Zeitz <florob@babelmonkeys.de> parents: 1052 diff changeset	351 rule_code = table.concat(rule.actions, "\n\t\t");
967 a88f33fe6970 mod_firewall: Don't add empty conditions check when no conditions are listed in a rule Matthew Wild <mwild1@gmail.com> parents: 966 diff changeset	352 end
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	353 table.insert(code, rule_code);
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	354 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	355
999 197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	356 for name in pairs(definition_handlers) do
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	357 table.insert(code.global_header, 1, "local "..name:lower().."s = definitions."..name..";");
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	358 end
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	359
1303 8a3f3f485675 mod_firewall: Produce code with nicer indentation Florian Zeitz <florob@babelmonkeys.de> parents: 1052 diff changeset	360 local code_string = "return function (definitions, fire_event, log)\n\t"
8a3f3f485675 mod_firewall: Produce code with nicer indentation Florian Zeitz <florob@babelmonkeys.de> parents: 1052 diff changeset	361 ..table.concat(code.global_header, "\n\t")
8a3f3f485675 mod_firewall: Produce code with nicer indentation Florian Zeitz <florob@babelmonkeys.de> parents: 1052 diff changeset	362 .."\n\tlocal db = require 'util.debug';\n\n\t"
8a3f3f485675 mod_firewall: Produce code with nicer indentation Florian Zeitz <florob@babelmonkeys.de> parents: 1052 diff changeset	363 .."return function (event)\n\t\t"
8a3f3f485675 mod_firewall: Produce code with nicer indentation Florian Zeitz <florob@babelmonkeys.de> parents: 1052 diff changeset	364 .."local stanza, session = event.stanza, event.origin;\n"
8a3f3f485675 mod_firewall: Produce code with nicer indentation Florian Zeitz <florob@babelmonkeys.de> parents: 1052 diff changeset	365 ..table.concat(code, "")
8a3f3f485675 mod_firewall: Produce code with nicer indentation Florian Zeitz <florob@babelmonkeys.de> parents: 1052 diff changeset	366 .."\n\tend;\nend";
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	367
956 33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	368 chain_handlers[chain_name] = code_string;
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	369 end
1343 7dbde05b48a9 all the things: Remove trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 1325 diff changeset	370
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	371 return chain_handlers;
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	372 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	373
2078 11539785cb92 mod_firewall: Split compile function into two parts in order to separate their scopes Kim Alvefur <zash@zash.se> parents: 2077 diff changeset	374 local function compile_firewall_rules(filename)
11539785cb92 mod_firewall: Split compile function into two parts in order to separate their scopes Kim Alvefur <zash@zash.se> parents: 2077 diff changeset	375 local ruleset, err = parse_firewall_rules(filename);
11539785cb92 mod_firewall: Split compile function into two parts in order to separate their scopes Kim Alvefur <zash@zash.se> parents: 2077 diff changeset	376 if not ruleset then return nil, err; end
11539785cb92 mod_firewall: Split compile function into two parts in order to separate their scopes Kim Alvefur <zash@zash.se> parents: 2077 diff changeset	377 local chain_handlers = process_firewall_rules(ruleset);
11539785cb92 mod_firewall: Split compile function into two parts in order to separate their scopes Kim Alvefur <zash@zash.se> parents: 2077 diff changeset	378 return chain_handlers;
11539785cb92 mod_firewall: Split compile function into two parts in order to separate their scopes Kim Alvefur <zash@zash.se> parents: 2077 diff changeset	379 end
11539785cb92 mod_firewall: Split compile function into two parts in order to separate their scopes Kim Alvefur <zash@zash.se> parents: 2077 diff changeset	380
956 33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	381 local function compile_handler(code_string, filename)
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	382 -- Prepare event handler function
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	383 local chunk, err = loadstring(code_string, "="..filename);
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	384 if not chunk then
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	385 return nil, "Error compiling (probably a compiler bug, please report): "..err;
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	386 end
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	387 local function fire_event(name, data)
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	388 return module:fire_event(name, data);
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	389 end
999 197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	390 chunk = chunk()(active_definitions, fire_event, logger(filename)); -- Returns event handler with 'zones' upvalue.
956 33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	391 return chunk;
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	392 end
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	393
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	394 function module.load()
1052 80f0a3231c59 mod_firewall: Add support for being called as a prosodyctl command Kim Alvefur <zash@zash.se> parents: 1051 diff changeset	395 if not prosody.arg then return end -- Don't run in prosodyctl
999 197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	396 active_definitions = {};
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	397 local firewall_scripts = module:get_option_set("firewall_scripts", {});
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	398 for script in firewall_scripts do
955 97454c088b6c mod_firewall: Use resolve_relative_path correctly Kim Alvefur <zash@zash.se> parents: 947 diff changeset	399 script = resolve_relative_path(prosody.paths.config, script);
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	400 local chain_functions, err = compile_firewall_rules(script)
1343 7dbde05b48a9 all the things: Remove trailing whitespace Florian Zeitz <florob@babelmonkeys.de> parents: 1325 diff changeset	401
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	402 if not chain_functions then
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	403 module:log("error", "Error compiling %s: %s", script, err or "unknown error");
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	404 else
956 33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	405 for chain, handler_code in pairs(chain_functions) do
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	406 local handler, err = compile_handler(handler_code, "mod_firewall::"..chain);
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	407 if not handler then
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	408 module:log("error", "Compilation error for %s: %s", script, err);
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	409 else
33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	410 local chain_definition = chains[chain];
1325 b21236b6b8d8 Backed out changeset 853a382c9bd6 Kim Alvefur <zash@zash.se> parents: 1324 diff changeset	411 if chain_definition and chain_definition.type == "event" then
b21236b6b8d8 Backed out changeset 853a382c9bd6 Kim Alvefur <zash@zash.se> parents: 1324 diff changeset	412 for _, event_name in ipairs(chain_definition) do
b21236b6b8d8 Backed out changeset 853a382c9bd6 Kim Alvefur <zash@zash.se> parents: 1324 diff changeset	413 module:hook(event_name, handler, chain_definition.priority);
956 33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	414 end
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: 1343 diff changeset	415 elseif not chain:sub(1, 5) == "user/" then
956 33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	416 module:log("warn", "Unknown chain %q", chain);
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	417 end
956 33d6642f4db7 mod_firewall: Tighten up error handling, and split rules->Lua and Lua->bytecode compilation into separate functions Matthew Wild <mwild1@gmail.com> parents: 955 diff changeset	418 module:hook("firewall/chains/"..chain, handler);
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	419 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	420 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	421 end
c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	422 end
999 197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	423 -- Replace contents of definitions table (shared) with active definitions
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	424 for k in it.keys(definitions) do definitions[k] = nil; end
197af8440ffb mod_firewall: Make defining objects generic (currently zones and rate limits), so more can easily be added. Also a syntax change... definition lines must begin with % Matthew Wild <mwild1@gmail.com> parents: 998 diff changeset	425 for k,v in pairs(active_definitions) do definitions[k] = v; end
947 c91cac3b823f mod_firewall: General stanza filtering plugin with a declarative rule-based syntax Matthew Wild <mwild1@gmail.com> parents: diff changeset	426 end
1052 80f0a3231c59 mod_firewall: Add support for being called as a prosodyctl command Kim Alvefur <zash@zash.se> parents: 1051 diff changeset	427
80f0a3231c59 mod_firewall: Add support for being called as a prosodyctl command Kim Alvefur <zash@zash.se> parents: 1051 diff changeset	428 function module.command(arg)
80f0a3231c59 mod_firewall: Add support for being called as a prosodyctl command Kim Alvefur <zash@zash.se> parents: 1051 diff changeset	429 if not arg[1] or arg[1] == "--help" then
80f0a3231c59 mod_firewall: Add support for being called as a prosodyctl command Kim Alvefur <zash@zash.se> parents: 1051 diff changeset	430 require"util.prosodyctl".show_usage([[mod_firewall <firewall.pfw>]], [[Compile files with firewall rules to Lua code]]);
80f0a3231c59 mod_firewall: Add support for being called as a prosodyctl command Kim Alvefur <zash@zash.se> parents: 1051 diff changeset	431 return 1;
80f0a3231c59 mod_firewall: Add support for being called as a prosodyctl command Kim Alvefur <zash@zash.se> parents: 1051 diff changeset	432 end
2118 643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	433 local verbose = arg[1] == "-v";
643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	434 if verbose then table.remove(arg, 1); end
1052 80f0a3231c59 mod_firewall: Add support for being called as a prosodyctl command Kim Alvefur <zash@zash.se> parents: 1051 diff changeset	435
2117 5aa3b93cd37a mod_firewall: Make prosodyctl command output more realistic source (not guaranteed to work) Kim Alvefur <zash@zash.se> parents: 2113 diff changeset	436 local serialize = require "util.serialization".serialize;
2118 643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	437 if verbose then
643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	438 print("local logger = require \"util.logger\".init;");
643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	439 print();
643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	440 print("local function fire_event(name, data)\n\tmodule:fire_event(name, data)\nend");
643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	441 print();
643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	442 end
2117 5aa3b93cd37a mod_firewall: Make prosodyctl command output more realistic source (not guaranteed to work) Kim Alvefur <zash@zash.se> parents: 2113 diff changeset	443
1052 80f0a3231c59 mod_firewall: Add support for being called as a prosodyctl command Kim Alvefur <zash@zash.se> parents: 1051 diff changeset	444 for _, filename in ipairs(arg) do
2117 5aa3b93cd37a mod_firewall: Make prosodyctl command output more realistic source (not guaranteed to work) Kim Alvefur <zash@zash.se> parents: 2113 diff changeset	445 print("do -- File "..filename);
1052 80f0a3231c59 mod_firewall: Add support for being called as a prosodyctl command Kim Alvefur <zash@zash.se> parents: 1051 diff changeset	446 local chain_functions = assert(compile_firewall_rules(arg[1]));
2118 643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	447 if verbose then
643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	448 print();
643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	449 print("local active_definitions = "..serialize(active_definitions)..";");
643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	450 print();
643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	451 end
1052 80f0a3231c59 mod_firewall: Add support for being called as a prosodyctl command Kim Alvefur <zash@zash.se> parents: 1051 diff changeset	452 for chain, handler_code in pairs(chain_functions) do
2117 5aa3b93cd37a mod_firewall: Make prosodyctl command output more realistic source (not guaranteed to work) Kim Alvefur <zash@zash.se> parents: 2113 diff changeset	453 print("---- Chain "..chain:gsub("_", " "));
2118 643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	454 if not verbose then
643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	455 print(("%s = %s;"):format(chain, handler_code:sub(8)));
643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	456 else
2117 5aa3b93cd37a mod_firewall: Make prosodyctl command output more realistic source (not guaranteed to work) Kim Alvefur <zash@zash.se> parents: 2113 diff changeset	457
2118 643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	458 print(("local %s = (%s)(active_definitions, fire_event, logger(%q));"):format(chain, handler_code:sub(8), filename));
643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	459 print();
2117 5aa3b93cd37a mod_firewall: Make prosodyctl command output more realistic source (not guaranteed to work) Kim Alvefur <zash@zash.se> parents: 2113 diff changeset	460
2118 643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	461 local chain_definition = chains[chain];
643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	462 if chain_definition and chain_definition.type == "event" then
643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	463 for _, event_name in ipairs(chain_definition) do
643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	464 print(("module:hook(%q, %s, %d);"):format(event_name, chain, chain_definition.priority or 0));
643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	465 end
2117 5aa3b93cd37a mod_firewall: Make prosodyctl command output more realistic source (not guaranteed to work) Kim Alvefur <zash@zash.se> parents: 2113 diff changeset	466 end
2118 643b254e75de mod_firewall: Disable more realistic output by default, activated by adding a -v flag Kim Alvefur <zash@zash.se> parents: 2117 diff changeset	467 print(("module:hook(%q, %s, %d);"):format("firewall/chains/"..chain, chain, chain_definition.priority or 0));
2117 5aa3b93cd37a mod_firewall: Make prosodyctl command output more realistic source (not guaranteed to work) Kim Alvefur <zash@zash.se> parents: 2113 diff changeset	468 end
5aa3b93cd37a mod_firewall: Make prosodyctl command output more realistic source (not guaranteed to work) Kim Alvefur <zash@zash.se> parents: 2113 diff changeset	469
5aa3b93cd37a mod_firewall: Make prosodyctl command output more realistic source (not guaranteed to work) Kim Alvefur <zash@zash.se> parents: 2113 diff changeset	470 print("---- End of chain "..chain);
5aa3b93cd37a mod_firewall: Make prosodyctl command output more realistic source (not guaranteed to work) Kim Alvefur <zash@zash.se> parents: 2113 diff changeset	471 print();
1052 80f0a3231c59 mod_firewall: Add support for being called as a prosodyctl command Kim Alvefur <zash@zash.se> parents: 1051 diff changeset	472 end
2117 5aa3b93cd37a mod_firewall: Make prosodyctl command output more realistic source (not guaranteed to work) Kim Alvefur <zash@zash.se> parents: 2113 diff changeset	473 print("end -- End of file "..filename);
1052 80f0a3231c59 mod_firewall: Add support for being called as a prosodyctl command Kim Alvefur <zash@zash.se> parents: 1051 diff changeset	474 end
80f0a3231c59 mod_firewall: Add support for being called as a prosodyctl command Kim Alvefur <zash@zash.se> parents: 1051 diff changeset	475 end

prosody-modules

b0d711cd3da5

mod_firewall/mod_firewall.lua

Software / code / prosody-modules

Annotate

mod_firewall/mod_firewall.lua @ 2126:b0d711cd3da5

Software `/` code `/` prosody-modules